SA4301A

SA4301A SAMES | Alldatasheet

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Polyphase Energy Metering IC with Pulse Outputs and Anti-Tamper Features SPEC-1538 (REV. 7) 1/23 29-09-2017 SA4301A

FEATURES

 Meets the IEC62053, CBIP -88 and IS137799 -1999 specification requirements for Class 1 AC static watt - hour meters for active energy  Motor drive outputs (MOP, MON) provide average active power information and can drive an electro -mechanical counter or an impulse counter directly  LED pulse output for calibration purposes supplies average active power information  Configurable for different meter ratings  Per phase energy direction indication  Per phase missing phase indication  Phase sequence error indication  Precision on-chip oscillator (70ppm/°C drift)  Precision on-chip voltage reference (10ppm/°C drift)  On-chip anti-creep function (0.005% of EMAX)  Low power consumption (<40mW typical)  Measures AC inputs only

DESCRIPTION

The SA4301A is an accurate polyphase power/energy metering integrated circuit providing a single chip solution for three phase energy meters. Very few external components are required and the chip includes a direct drive capability for electro-mechanical counters. The SA4301A does not require an external crystal or voltage reference. A precision oscillator and a precision voltage reference to supply the circuitry with a stable frequency and stable reference currents are integrated on the chip. The SA4301A metering integrate d circuit generates a pulse output, the frequency of which is proportional to the active power consumption. Programmable inputs allow the meter manufacturer to configure the SA4301A for different meter maximum currents (IMAX) and nominal voltages (VNOM) without having to change the stepper motor counter or impulse counter gear ratio. The LED pulse output follows the average active power consumption measured and is intended for meter calibration purposes. In fast calibration mode this output provides a high frequency pulse rate following the average active power consumption and can be used for fast calibrati on or to interface with a microcontroller. The SA4301A includes an anti -creep feature preventing any creep effects in the meter under no-load conditions. The SA4301A integrated circuit is available in a 24 pin small outline (SOIC24) RoHS compliant package. Figure 1: Block diagram VREF VSS MON MOP COUNTER DRIVE BUFFERS DIVISION FOR COUNTER OUTPUTOSCILLATOR AND TIMING VOLTAGE REFERENCE AND CURRENT BIASING VOLTAGE CHANNEL 3 ADC CURRENT CHANNEL 3 ADC AGND IVP3 IIN3 IIP3 VDD POWER ON RESET DIGITAL OUTPUT DIGITAL OUTPUT Instantaneous power SIGNAL PROCESSING Average power DIVISION FOR CALIBRATION LED OUTPUT LED VOLTAGE CHANNEL 2 ADC CURRENT CHANNEL 2 ADC IVP2 IIN2 IIP2 VOLTAGE CHANNEL 1 ADC CURRENT CHANNEL 1 ADC IVP1 IIN1 IIP1 DIGITAL OUTPUT DIGITAL OUTPUT DIGITAL OUTPUT DIGITAL OUTPUT LPF Instantaneous power Average power LPF Instantaneous power Average power LPF PROGRAMMABLE ADDER ABS |X| ABS |X| ABS |X| MODE PIN STATE DETECTION RA RB FMS MS CHANNEL MAINS FAIL DETECTION MAINS FAIL DETECTION MAINS FAIL DETECTION ENERGY DIRECTION ENERGY DIRECTION ENERGY DIRECTION TAMPER CONDITION AND STATUS SIGNAL DETERMINATION PH/DIR OUTPUT MULTIPLEXER AND DRIVER PH1 PH2 PH3 PULSE GENERATION ANTI-CREEP THRESHOLD ANTI-CREEP THRESHOLD ANTI-CREEP THRESHOLD

SPEC-1538 (REV. 7) 2/23 29-09-2017 SA4301A

ELECTRICAL CHARACTERISTICS

(VDD - VSS = 5V ± 10%, over the temperature range -40°C to +85°C, unless otherwise specified. Refer to Figure 2 “Test circuit for electrical characteristics”.) Parameter Symbol Min Typ Max Unit Condition General Supply Voltage: Positive VDD 2.25 2.5 2.75 V With respect to AGND Supply Voltage: Negative VSS -2.75 -2.5 -2.25 V With respect to AGND Supply Current: Positive IDD 7.5 10.5 mA Supply Current: Negative ISS -7.5 -10.5 mA Analog Inputs Current Sensor Inputs (Differential) Input Current Range IRIIP1, IRIIP2, IRIIP3, IRIIN1, IRIIN2, IRIIN3 -25 25 µA Peak value Offset Voltage VOIIP1, VOIIP2, VOIIP3, VOIIN1, VOIIN2, VOIIN3 -4 4 mV With R = 4.7k connected to AGND Voltage Sensor Inputs (Asymmetrical) Input Current Range IRIVP1, IRIVP2, IRIVP3 -25 25 μA Peak value Offset Voltage VOIVP1, VOIVP2, VOIVP3 -4 4 mV With R = 4.7k connected to AGND Digital Inputs Pull-up/down Current on RA, RB, MS, FMS* IPUD 1.5 5.5 mA State Change Detection Time for Digital Inputs TST 20 ms RA, RB, MS, FMS Input High Voltage Input Low Voltage VIH VIL VDD-1 VSS+1 V V Digital Outputs LED Output Frequency in FAST Mode FMAX 4.5 5 5.5 kHz 16μARMS input current per channel LED, PH1, PH2, PH3 Output High Voltage Output Low Voltage VOH VOL VDD-1 VSS+1 V V ISOURCE = 5mA ISINK = 5mA MOP, MON, PH/DIR Output High Voltage Output Low Voltage VOH VOL VDD-1 VSS+1 V V ISOURCE = 10mA ISINK = 10mA * This is the actual pull-up/down current during pin state scanning which is active for 70μs every 20ms. The average pull-up/down current is therefore between 5μA and 20μA. During manufacturing, testing and shipment we take great care to protect our products against potential external environmental damage such as Electrostatic Discharge (ESD). Although our products have ESD protection circuitry, permanent damage may occur on products subjected to high -energy electrostatic discharges accumulated on the human body and/o r test equipment that can discharge without detection. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality during product handling. ATTENTION: Electrostatic sensitive device. Requires special handling.

SPEC-1538 (REV. 7) 3/23 29-09-2017 SA4301A ELECTRICAL CHARACTERISTICS (continued) (VDD - VSS = 5V ± 10%, over the temperature range -40°C to +85°C, unless otherwise specified. Refer to Figure 2 “Test circuit for electrical characteristics”.) Parameter Symbol Min Typ Max Unit Condition On-chip Voltage Reference Reference Voltage VR 1.15 1.20 1.25 V Reference Current -IR 24.4 25.5 26.6 μA With R = 47k connected to VSS Temperature Coefficient TCR 10 70 ppm/ºC On-chip Oscillator Oscillator Frequency fOSC 3.15 3.57 4.00 MHz Temperature Coefficient TCOSC 70 200 ppm/ºC ABSOLUTE MAXIMUM RATINGS* Parameter Symbol Min Max Unit Supply Voltage VDD - VSS 6 V Current on any Pin IPIN -150 150 mA Storage Temperature TSTG -60 +125 ºC Specified Operating Temperature Range TO -40 +85 ºC Limit Range of Operating Temperature Tlimit -40 +85 ºC *Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only. Functional operation of the device at these or any other condition above those indicated in the operational sections of this specification, is not implied. Exposure to Absolute Maximum Ratings for extended periods may affect device reliability. Figure 2: Test circuit for electrical characteristics SA4301A R10.2A to 100A 50Hz AC Phase 1 220V 50Hz AC Phase 1 IIN1 IIP1 VREF VSS RA RB MS VSS MON MOP LED VDD VDD R11 R10 GND GND VDD VSS GND R1: 1.2 R2: 1.2 R3: 1.5k R4: 1.5k R5: 1.5k R6: 1.5k R7: 250k R8: 1k R9: 100k R10: 47k R11: 1k CT1: TZ76V (2500:1) P1: 1k C1: 22nF C2: 22nF C3: 5.6nF C4: 220nF C5: 220nF C6: 1µF CT1 PH3 2.5V DC 2.5V DC VDD VSS Phase angle between voltage and current -60 to 60 GND IVP1 N N Three Phase Source PH2 PH1 PH/DIR FMSAGND IIN2 IIP2 Same as IIP1 / IIN1 Input Network 0.2A to 100A 50Hz AC Phase 2 IIN3 IIP3 Same as IIP1 / IIN1 Input Network 0.2A to 100A 50Hz AC Phase 3 R9C3 GND GND 220V 50Hz AC Phase 2 N 220V 50Hz AC Phase 3 N Same as IVP1 Input Network IVP2 Same as IVP1 Input Network IVP3

SPEC-1538 (REV. 7) 4/23 29-09-2017 SA4301A PIN DESCRIPTION Designation Pin No. Description AGND 20 Analog Ground. This is the reference pin for the current and voltage signal sensing networks. The supply voltage to this pin should be mid-way between VDD and VSS. VDD 6 Positive Supply Voltage. The voltage to this pin should be +2.5V ± 10% with respect to AGND. VSS 18 Negative Supply Voltage. The voltage to this pin should be -2.5V ± 10% with respect to AGND. IVP1, IVP2, IVP3 21, 24, 3 Analog Inputs for Voltages. The maximum current into the voltage sense inputs IVP should be set at 16µARMS. The voltage sense inputs saturate at an input current of ±25µA peak. IIP1, IIN1, IIP2, IIN2, IIP3, IIN3 22, 23, 1, 2, 4, 5 Analog Inputs for Currents. The maximum c urrent into the current sense inputs IIP/IIN should be set at 16µA RMS. The current sense inputs saturate at an input current of ±25µA peak. VREF 19 This pin provides the connection for the reference current setting resistor. A 47k  resistor connected to VSS sets the optimum operating conditions. RA, RB 7, 8 Rated Condition Select inputs. These four state input pins are used for selecting between the different rated condition configurations. The RA input is also used for channel selection when the device is placed in single phase calibration mode. Refer to the Rated Condition Select and Mode Select sections. FMS 17 Fast Mode Select input. This three state input is used to select between STANDARD and FAST mode and provides an extended selection of meter co nstants. Refer to the Rated Condition Select and Fast Mode Select sections. MS 9 Mode Select input. This four state input is used to select the mode of the programmable adder. Refer to the Mode Select section. PH/DIR 13 Phase and Direction output. This o utput together with PH1, PH2 and PH3 indicates the energy flow direction and phase voltage information. PH1, PH2, PH3 14, 15, 16 Multiplexed outputs used together with the PH/DIR output to indicate energy flow direction and phase voltage information. LED 10 Calibration LED output. Refer to the Rated Condition Select section for the pulse rate output options. MON, MOP 11, 12 Motor pulse outputs. These outputs can drive an electro-mechanical counter directly. Refer to the Rated Condition Select section for the pulse rate output options. Figure 3: Pin connections

ORDERING INFORMATION

SA4301ASAR SOIC24 (RoHS compliant) IIP2 IIN2 IVP3 IIP3 IIN3 VDD RA RB IVP2 IIN1 IVP1 VREF VSS FMS MS LED PH3 PH2 IIP1 AGND MON MOP PH1 PH/DIR

SPEC-1538 (REV. 7) 5/23 29-09-2017 SA4301A TERMINOLOGY Anti-Creep Threshold The anti-creep threshold is defined as the minimum energy threshold below which no energy is registered and therefore no pulses are generated on the LED or motor drive outputs. Positive Energy Positive energy is defined when the phase difference between the input signals IIP and IVP is less than 90 degrees (-90..90 degrees). Negative Energy Negative energy is defined when the phase difference between the input signals IIP and IVP is greater than 90 degrees (90..270 degrees). Percentage Error* Percentage error is given by the following formula: %𝐸𝑟𝑟𝑜𝑟 = 𝐸𝑛𝑒𝑟𝑔𝑦 𝑟𝑒𝑔𝑖𝑠𝑡𝑒𝑟𝑒𝑑 − 𝑇𝑟𝑢𝑒 𝐸𝑛𝑒𝑟𝑔𝑦 𝑇𝑟𝑢𝑒 𝐸𝑛𝑒𝑟𝑔𝑦 × 100 NOTE: Since the true value cannot be determined, it is approximated by a value with a stated uncertainty that can be traced to standards agreed upon between manufacturer and user or to national standards. Rated Operating Conditions* Set of specified measuring ranges for performance characteristics and specified operating ranges for influence quantities, within which the variations or operating errors of a meter are specified and determined. Specified Measuring Range* Set of values of a measured quantity for which the error of a meter is intended to lie within specified limits. Specified Operating Range* A range of values of a single influence quantity, which forms a part of the rated operating conditions. Limit Range of Operation* Extreme conditions which an operating meter can withstand without damage and without degradation of its metrological characteristics when it is subsequently operated under its rated operating conditions. Maximum Rated Mains Current (IMAX) Maximum rated mains current is the specified maximum current flowing through the energy meter at rated operating conditions. Constant* Value expressing the relation between the ac tive energy registered by the meter and the corresponding value of the test output. If this value is a number of pulses, the constant should be either pulses per kilowatt -hour (imp/kWh) or watt - hours per pulse (Wh/imp). Nominal Mains Voltage (VNOM) Nominal mains voltage (VNOM) is the voltage specified for the energy meter at rated operating conditions. Maximum Channel Energy (EMAX) The maximum channel energy is defined as the energy registered on one channel of the SA4301A when 16µA RMS input current with zero phase shift are applied to the voltage and current inputs. Both the voltage and current inputs saturate at an input current magnitude of 25µA, or at 17.68µARMS when using sine waves. The maximum input current on each channel is therefore defined to be 16µARMS, which leaves about 10% headroom to the saturation point. Maximum Output Frequency (FMAX) The maximum output frequency (F MAX) is the output frequency in FAST mode when each of the three channels measures an amount of energy equal to E MAX. The nom inal output frequency is 5kHz under such conditions. Repeatability of Error Test** This test shall be carried out at 0.05Ib and Ib at UPF load under reference test conditions. Twenty error samples shall be taken at time intervals of 30 minutes. Identical test conditions shall be maintained throughout the test. For an acceptance test six error tests may be carried out at time intervals of at least 5 minutes. Total Sum This represents the arithmetic sum of the active energy from each channel taking energy flow direction into account. Negative energy flow is effectively subtracted from the sum. Absolute Sum This represents the arithmetic sum of the active energy from each channel regardless of the direction of the energy flow. The absolute values of the ac tive energy recorded on each individual channel are summed. * IEC 62052-11, 2003. Electricity Metering Equipment (AC) – General Requirements, Test and Test Conditions – Part 11: Metering Equipment ** IS13779-1999 Indian Standard AC Static Watt-hour Meters Class 1 and 2 Specification Rev 1

SPEC-1538 (REV. 7) 6/23 29-09-2017 SA4301A PERFORMANCE GRAPHS Figure 4: Test circuit for performance graphs Graph 1: Freq = 50Hz, VMains = VNOM, Temp = 25°C, VDD-VSS = 5.0V Graph 3: PF = 1, VMains = VNOM, Temp = 25°C, VDD-VSS = 5.0V Graph 2: PF = 1, Freq = 50Hz, Temp = 25°C, VDD-VSS = 5.0V Graph 4: PF = 1, Freq = 50Hz, VMains = VNOM, Temp = 25°C SA4301A R10.2A to 100A 50Hz AC Phase 1 220V 50Hz AC Phase 1 IIN1 IIP1 VREF VSS RA RB MS VSS MON MOP LED VDD VDD R11 R10 GND GND VDD VSS GND R1: 1.2 R2: 1.2 R3: 1.5k R4: 1.5k R5: 1.5k R6: 1.5k R7: 250k R8: 1k R9: 100k R10: 47k R11: 1k CT1: TZ76V (2500:1) P1: 1k C1: 22nF C2: 22nF C3: 5.6nF C4: 220nF C5: 220nF C6: 1µF CT1 PH3 2.5V DC 2.5V DC VDD VSS Phase angle between voltage and current -60 to 60 GND IVP1 N N Three Phase Source PH2 PH1 PH/DIR FMSAGND IIN2 IIP2 Same as IIP1 / IIN1 Input Network 0.2A to 100A 50Hz AC Phase 2 IIN3 IIP3 Same as IIP1 / IIN1 Input Network 0.2A to 100A 50Hz AC Phase 3 R9C3 GND GND 220V 50Hz AC Phase 2 N 220V 50Hz AC Phase 3 N Same as IVP1 Input Network IVP2 Same as IVP1 Input Network IVP3 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.1 1 10 100 %Error %IMAX PF = 1 PF = 0.5 LAG PF = 0.5 LEAD PF = -1 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.1 1 10 100 %Error %IMAX Freq = 50Hz Freq = 45Hz Freq = 65Hz -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.1 1 10 100 %Error %IMAX VMains = 100%VNOM VMains = 50% VNOM VMains = 130% VNOM -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.1 1 10 100 %Error %IMAX VDD-VSS = 5.0V VDD-VSS = 4.5V VDD-VSS = 5.5V

SPEC-1538 (REV. 7) 7/23 29-09-2017 SA4301A FUNCTIONAL DESCRIPTION Theory of Operation The SA4301A includes all the required functions for three channel polyphase power and energy measurement. Three pairs of identical AD converters sample the three phase voltage and current input signals. The three pairs of digital signals, accurately repres enting the voltage and current inputs, are multiplied using digital multiplication. The output of each multiplier represents the instantaneous power on each channel, which is subsequently low pass filtered and integrated over time to remove the instantaneo us components. The three channels are added together using the programmable adder, forming the total averaged instantaneous energy. This energy is accumulated over time to form the outputs of the device. For given voltage and current signals the instanta neous power is calculated by: 𝑝(𝑡) = 𝑣(𝑡) × 𝑖(𝑡) 𝑝(𝑡) = 𝑉𝑀 cos(𝜔𝑡 + 𝜃) × 𝐼𝑀 cos(𝜔𝑡 + 𝜓) Let 𝜙 = 𝜃 − 𝜓, and 𝑉𝑅𝑀𝑆 = 𝑉𝑀 √2 and 𝐼𝑅𝑀𝑆 = 𝐼𝑀 √2 then 𝑝(𝑡) = 𝑉𝑀 cos(𝜔𝑡 + 𝜃) × 𝐼𝑀 cos(𝜔𝑡 + 𝜃 − 𝜙) 𝑝(𝑡) = 𝑉𝑅𝑀𝑆𝐼𝑅𝑀𝑆(cos 𝜙 + cos(2(𝜔𝑡 + 𝜃) − 𝜙)) where p(t) is the instantaneous power, v(t) is the instantaneous voltage signal, i(t) is the instantaneous current signal, VM is the amplitude of the voltage signal, IM is the amplitude of the current signal,  is the phase angle of the voltage signal and  is the phase angle of the current signal. The instantaneous power is low pass filtered to remove the double mains frequency component cos(2( t+)-) and is then integrated over time to provide the average power information 𝑃 = 1 𝑇 ∫ 𝑝(𝑡)𝑑𝑡 𝑇 𝑃 = 𝑉𝑅𝑀𝑆𝐼𝑅𝑀𝑆 cos 𝜙 where P is the average power and cos is the power factor. Linearity The SA4301A is a CMOS integrated circuit, which performs power/energy calculations across a dynamic range of 500:1 to an accuracy that exceeds the IEC62053 specification. Analog Inputs The input circuitry of the current and voltage sensor inputs is illustrated in Figure 5. These inputs are protected against electrostatic discharge through clamping diodes. The feedback loops from the outputs of the amplifiers A I and AV generate virtual short circuits between IIP and IIN as well as IVP and AGND. The current sense inputs (IIP and IIN) are identical and balanced. The AD converters convert the signals on the voltage and current sense inputs to a digital format for further p rocessing. All internal offsets are eliminated through the use of various cancellation techniques. Figure 5: Analog input configuration Digital Outputs The calculations required for power and energy are performed and converted to pulses on the LED, MON and MOP outputs. The complimentary output pins MON and MOP are provided for driving a stepper motor counter directly. The output frequency on the LED output is, in both STANDARD and FAST mode, proportional to the average active p ower consumption measured. The FAST mode is intended for fast meter calibration and verification purposes or for int erfacing the SA4301A to a microcontroller. Anti-Creep Threshold An integrated anti-creep function prevents any output pulses from a specifi c channel from appearing on the LED output and the MON/MOP motor drive outputs if the energy measured on that channel is less than 0.005% of EMAX, where EMAX is the energy registered on that channel when the input currents for voltage and current are 16µARMS with zero phase shift. AI IIN IIP VDD VSS VDD VSS AV IVP VDD VSS AGND VOLTAGE SENSOR INPUT CURRENT SENSOR INPUT CURRENT CHANNEL ADC VOLTAGE CHANNEL ADC

SPEC-1538 (REV. 7) 8/23 29-09-2017 SA4301A Reverse Energy Flow Indication The SA4301A assesses the phase difference between any voltage channel signal and its corresponding current channel signal. If this phase difference is greater than 90 degrees then the reverse curren t LED indication will be displayed on the multiplexed LED array. This facility is designed to detect the wrongful connection of the meter. This operation is fully described in the Output Signals section. Starting Current The SA4301A generates pulses on th e LED and MON/MOP outputs for an input power greater than 0.005% of E MAX on any of the three channels. This is to comply with the IEC requirement where the meter is required to generate pulses for currents greater than 0.4%Ib. Calibration and Repeatability The SA4301A provides an output (LED) that is used for calibration of the meter. The meter is calibrated by comparing the energy reading of the meter under test with the energy reading of the reference meter. Each channel is calibrated independently. The re ference meter should have a considerably higher pulse rate than the meter under test. The accuracy to which the meter has to be calibrated will dictate how much higher the reference meter pulse rate has to be. The SA4301A can be calibrated to specification with a minimum of two pulses on the LED output whilst in STANDARD mode and utilizing an appropriate reference meter. This reading is independent of time and will be repeatable so as to consistently achieve the required accuracy for the full input curre nt range that needs to be measured to IEC62053 accuracy. In Figure 6 the reference meter pulses are counted between two pulses of the meter under test. The meter under test is then adjusted so as to reflect the expected number of counted reference meter pulses. A worst-case scenario is for measurements obtained for only two pulses of the meter under test and N pulses from the reference meter. In this case the measurement resolution will be: 𝑀𝑒𝑎𝑠𝑢𝑟𝑒𝑚𝑒𝑛𝑡 𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛 (%) = 1 𝑁 × 100 The corresponding calibration and repeatability results can never be more accurate than this measurement resolution. Power-On Reset The SA4301A has a power -on reset circuitry that activates whenever the voltage between V DD and V SS is less than 3.6V ± 8%. Power Consumption The power consumption of the SA4301A integrated circuit is less than 60mW. Figure 6: Calibration and repeatability setup Reference Meter L1 L2 L3 N I1 I2 I3 Three Phase Test Source Meter Under Test SA4301A L1 L2 L3 N N Current 1 Current 2 Current 3 ………. ………. N pulses I1 I2 I3 LED Pulse Out

SPEC-1538 (REV. 7) 10/23 29-09-2017 SA4301A When FMS is floating the LED pin outputs fast mode pulses. The motor pulses occur as usual based on the last FMS before a floating condition was detected as well as the current states of RA and RB. If a floating condition o n FMS is detected at device start -up the motor pulses are generated based on FMS set to VSS. Table 2: LED and motor division factors FMS RB RA DF_LED DF_MO 0 0 0 146 128 0 0 1 292 64 0 0 Z 584 32 0 0 PH/DIR 1168 16 0 1 0 146 64 0 1 1 292 32 0 1 Z 584 16 0 1 PH/DIR 1168 8

0 Z 0 146 32

0 Z 1 292 16

0 Z Z 584 8

0 Z PH/DIR 1168 4

0 PH/DIR 0 146 16

0 PH/DIR 1 292 8

0 PH/DIR Z 584 4

0 PH/DIR PH/DIR 1168 2

1 Z 0 392 8

1 Z 1 784 4

1 Z Z 234 8

1 Z PH/DIR 468 4

1 PH/DIR 0 196 8

1 PH/DIR 1 392 4

1 PH/DIR Z 156 8

1 PH/DIR PH/DIR 312 4

Note: Pin values defined as follows 0 pin is connected to VSS 1 pin is connected to VDD Z pin is left floating PH/DIR pin is connected to PH/DIR Rated Condition Select (RA, RB) The Rated Condition Select inputs (RA and RB) along with the Fast Mode Select input (FMS) are used for obtaining a multitude of meter constants and motor drive ratios. The different LED and motor division factors (DF_LED and DF_MO) that can be selected via RA, RB and FMS are shown in Table 2. To calculate the LED output pulse constant in STANDARD mode and the motor drive pulse constant for any meter rating (IMAX and VNOM) the following formulae can be used: 𝐿𝐸𝐷 𝑖𝑚𝑝/𝑘𝑊ℎ = 𝐼𝑉𝑃 16 × 5000 𝐷𝐹_𝐿𝐸𝐷 × 1000 × 3600 3 × 𝑉𝑁𝑂𝑀 × 𝐼𝑀𝐴𝑋 ...(1) where IMAX is maximum rated mains current, VNOM is nominal mains voltage, IVP is the analog input current on the voltage sense inputs at VNOM as specified in Table 1 and DF_LED is the dividing factor for the LED output that is set by the combination of RA, RB and FMS as specified in Table 2. Equation 1 is based on the assumption that the input currents into the IIP/IIN current sense inputs are set to 16μA RMS at IMAX. 𝑀𝑜𝑡𝑜𝑟 𝑖𝑚𝑝/𝑘𝑊ℎ = 𝐿𝐸𝐷 𝑖𝑚𝑝/𝑘𝑊ℎ 𝐷𝐹_𝑀𝑂 …(2) where LED imp/kWh is the LED constant as calculated using Equation 1 and DF_MO is the dividing factor for the motor output that is set by the combination of RA, RB and FMS as specified in Table Table 3 illustrates some of the possible LED and motor constants that are achieva ble for some common values of IMAX using a VNOM between 220V and 240V.

SPEC-1538 (REV. 7) 11/23 29-09-2017 SA4301A Table 3: LED and motor constants achievable for some common IMAX currents for VNOM = 220V to 240V IMAX Dividing Factors LED Output Motor Output (A) DF_LED DF_MO (imp/kWh) (imp/kWh) 6 976 32 3200 100 6 1952 16 1600 100 10 146 128 12800 100 10 292 64 6400 100 10 584 32 3200 100 10 1168 16 1600 100 10 146 64 12800 200 10 292 32 6400 200 10 584 16 3200 200 10 1168 8 1600 200 10 146 32 12800 400 10 292 16 6400 400 10 584 8 3200 400 10 1168 4 1600 400 10 146 16 12800 800 10 292 8 6400 800 10 584 4 3200 800 10 1168 2 1600 800 20 146 64 6400 100 20 292 32 3200 100 20 584 16 1600 100 20 1168 8 800 100 20 146 32 6400 200 20 292 16 3200 200 20 584 8 1600 200 20 1168 4 800 200 20 146 16 6400 400 20 292 8 3200 400 20 584 4 1600 400 20 1168 2 800 400 25 234 32 3200 100 25 468 16 1600 100 25 234 16 3200 200 25 468 8 1600 200 25 234 8 3200 400 25 468 4 1600 400 IMAX Dividing Factors LED Output Motor Output (A) DF_LED DF_MO (imp/kWh) (imp/kWh) 30 392 16 1600 100 30 784 8 800 100 30 392 8 1600 200 30 784 4 800 200 30 196 8 3200 400 30 392 4 1600 400 40 146 32 3200 100 40 292 16 1600 100 40 584 8 800 100 40 1168 4 400 100 40 146 16 3200 200 40 292 8 1600 200 40 584 4 800 200 40 1168 2 400 200 50 234 16 1600 100 50 468 8 800 100 50 234 8 1600 200 50 468 4 800 200 60 392 8 800 100 60 784 4 400 100 60 196 8 1600 200 60 392 4 800 200 80 146 16 1600 100 80 292 8 800 100 80 584 4 400 100 80 1168 2 200 100 100 234 8 800 100 100 468 4 400 100 120 196 8 800 100 120 392 4 400 100 150 156 8 800 100 150 312 4 400 100

SPEC-1538 (REV. 7) 12/23 29-09-2017 SA4301A Mode Select (MS) The Mode Select (MS) input is used to set different operation modes of the device as illustrated in Table 4. The MS input controls the programmable adder. This adder sums the individual channel energy values. The summing mode as well as the channel section, when in calibration mode, can be controlled. Table 4: Adder mode selection via the MS input MS Input Programmable Adder Mode VSS Total Sum Floating Single Phase Calibration PH/DIR Sum of Positive Energy Total Sum: The total sum mode is the arithmetic sum of the three active energies, ETOT = ECH1 + ECH2 + ECH3. The direction of the energy flow is taken into account during all calculations. Therefore negative energy flow will effectively be subtracted from positive energy flow. Setting MS to VSS selects the total sum mode. Absolute Sum: The absolute sum is the arithmetic sum of the three active energies that is obtained by disregarding the direction of energy flow, E TOT = |ECH1| + |ECH2| + |ECH3|. The absolute value of each channels energy is taken before summing. Setting MS to VDD sets absolute sum mode. Sum o f Positive (Import) Energy : The sum of positive energy is the arithmetic sum of the positive active energies registered on the three channels only. If a specific channel detects negative energy, this energy is not included in the sum. Connecting the MS pin to PH/DIR sets the programmable adder to the sum of positive energy summing mode. Single Phase Calibration: The SA4301A can also be set to a single phase calibration mode by leaving the MS pin floating. In this mode it is possible to enable each channel individually. This is intended for meter calibration. The programmable adder uses only the energy from the selected channel, the remaining two channels are effectively internally masked and do not require external disconnection. The value on RA determines the channel that requires calibration as listed in Table 5. The initial value of RA as detected before the single phase calibration mode is enabled is internally saved so that the meter constant is not affected by changing RA during single phase calibration mode. If the single phase calibration mode is detected at device start -up this intern al value for RA defaults to logic 0 (RA = VSS). Table 5: Channel selection in single phase calibration mode via the RA input RA Input Selected Channel VSS 1 VDD 2 Floating 3 PH/DIR None OUTPUT SIGNALS LED Output (LED) The LED output pin provides a pulse output with a frequency proportional to the average active energy consumption measured when in STANDARD mode or FAST mode. A low pass filter is applied to the instantaneous energy output directly after multiplication. This f iltering allows all instantaneous components to be removed resulting in a constant output frequency at constant energy input, even over a short period of time. The delay of this filter is about 200ms. The LED output is primarily used for calibration purpo ses. The Rated Condition Select inputs (RA, RB) and the Fast Mode Select input (FMS) allow different nominal output frequencies to be selected. The FMS input also allows selection between STANDARD mode and FAST mode. The LED output is active low. Figure 9 shows the LED output waveform. In FAST mode the LED pulse output is set to a nominal frequency of 5kHz at an input current of 16µA RMS on each of the three current and voltage channels. The nominal output frequency of the LED pin is given by 𝑓𝐿𝐸𝐷_𝐹𝐴𝑆𝑇 = 5000 × |𝐼𝑉1 × 𝐼𝐼1 × cos 𝜙1 + 𝐼𝑉2 × 𝐼𝐼2 × cos 𝜙2 + 𝐼𝑉3 × 𝐼𝐼3 × cos 𝜙3 3 × 162 | …(3) in FAST mode where IVX and IIX are the analog input currents in µA RMS on the voltage and current sense inputs on channel X and X is the phase angle between the current and voltage signals on channel X. Equation 3 is valid for total sum mode. If any other programmable adder mode is selected then the above equation has to be modified. In absolute sum mode the absolute value of each cos X has to be taken, in sum of positive energy mode any cosX that is negative has to be set to zero and in single phase calibration mode the cosX of the non-selected channels has to be set to zero.

SPEC-1538 (REV. 7) 15/23 29-09-2017 SA4301A Identifiable Tamper Conditions The SA4301A caters for the following meter tamper conditions, which are indicated as follows: Condition Identification Result Phase Voltages One LED is provided for each channel to indicate abnormal operating conditions. During normal conditions, the LEDs are continuously switched on. Phase Failure In case of a phase failure, the corresponding phase voltage fail LED is switched off. The SA4301A will record the energy consumption accurately under this condition. Phase Sequence Error In case of a phase sequence error, the phase voltage fail LEDs will flash with a repetition rate of approximately 1Hz. The SA4301A will record the energy consumption accurately under this condition. Input / Output Terminals Interchanged One LED is provided for each channel to indicate reverse energy flow. If detected, the corresponding LED is switched on. The SA4301A can be configured to accumulate the absolute energy consumption measured for each channel, irrespective of the direction of the energy flow. The SA4301A will record the energy consumption accurately and as defined by the setup of the programmable adder. Missing Neutral Connection The architecture of the meter should provide for a good "phantom neutral". In this case, the meter would register the energy consumption correctly. Return through Earth An indication for this condition could be realized external to the IC. The input line currents are measured, so the SA4301A will therefore record the energy consumption accurately under this condition. Load Imbalance The SA4301A will record the energy consumption accurately under this condition. Anti-Tamper Indicators The operation of the tamper indication LED array is according to the following tables in order of increasing priority. In all cases the previous valid condition is retained unless substituted by a new higher priority valid tamper condition or normal operation. For example, assume a missing phase is detected. The other two phase voltages are now reversed. This should cause a phase sequence error, a new valid tamper condition, but with a lower priority. Therefore the phase sequence error will not be indicat ed until the missing phase has been corrected. Normal Operation Indication Condition No. Channel Input MAINS LED Indicators DIR LED Indicators 1 2 3 1 2 3 1 2 3

1 V&I_R V&I_Y V&I_B ON ON ON OFF OFF OFF

2 V&I_B V&I_R V&I_Y ON ON ON OFF OFF OFF

3 V&I_Y V&I_B V&I_R ON ON ON OFF OFF OFF

V&I_R, V&I_Y and V&I_B are stable phase voltages with corresponding in -phase currents (-90º < phase angle < 90º). The energy on each channel is above the anti-creep threshold. Phase Direction Error Indication Condition No. Channel Input MAINS LED Indicators DIR LED Indicators 1 2 3 1 2 3 1 2 3 1 -V&I_R V&I_Y V&I_B ON ON ON ON OFF OFF

2 V&I_R -V&I_Y V&I_B ON ON ON OFF ON OFF

3 V&I_R V&I_Y -V&I_B ON ON ON OFF OFF ON

4 -V&I_R -V&I_Y V&I_B ON ON ON ON ON OFF 5 -V&I_R V&I_Y -V&I_B ON ON ON ON OFF ON

6 V&I_R -V&I_Y -V&I_B ON ON ON OFF ON ON

7 -V&I_R -V&I_Y -V&I_B ON ON ON ON ON ON

SPEC-1538 (REV. 7) 16/23 29-09-2017 SA4301A Phase Direction Error Indication (Continued) Condition No. Channel Input MAINS LED Indicators DIR LED Indicators 1 2 3 1 2 3 1 2 3 8 -V&I_B V&I_R V&I_Y ON ON ON ON OFF OFF

9 V&I_B -V&I_R V&I_Y ON ON ON OFF ON OFF

10 V&I_B V&I_R -V&I_Y ON ON ON OFF OFF ON

11 -V&I_B -V&I_R V&I_Y ON ON ON ON ON OFF 12 -V&I_B V&I_R -V&I_Y ON ON ON ON OFF ON

13 V&I_B -V&I_R -V&I_Y ON ON ON OFF ON ON

14 -V&I_B -V&I_R -V&I_Y ON ON ON ON ON ON 15 -V&I_Y V&I_B V&I_R ON ON ON ON OFF OFF

16 V&I_Y -V&I_B V&I_R ON ON ON OFF ON OFF

17 V&I_Y V&I_B -V&I_R ON ON ON OFF OFF ON

18 -V&I_Y -V&I_B V&I_R ON ON ON ON ON OFF 19 -V&I_Y V&I_B -V&I_R ON ON ON ON OFF ON

20 V&I_Y -V&I_B -V&I_R ON ON ON OFF ON ON

21 -V&I_Y -V&I_B -V&I_R ON ON ON ON ON ON V&I_R, V&I_Y and V&I_B are stable phase voltages with corresponding in -phase currents (-90º < phase angle < 90º). The energy on each channel is above the anti-creep threshold. -V&I_R, -V&I_Y and -V&I_B are stable phase voltages with corresponding out of phase currents ( -180º < phase angle < -90º or 90º < phase angle < 180º). The energy on each channel is above the anti -creep threshold. Anti-Creep Operation Condition No. Channel Input MAINS LED Indicators DIR LED Indicators 1 2 3 1 2 3 1 2 3 1 v&i_r V&I_Y V&I_B ON ON ON OFF X X

2 V&I_R v&i_y V&I_B ON ON ON X OFF X

3 V&I_R V&I_Y v&i_b ON ON ON X X OFF

4 v&i_r v&i_y V&I_B ON ON ON OFF OFF X 5 v&i_r V&I_Y v&i_b ON ON ON OFF X OFF

6 V&I_R v&i_y v&i_b ON ON ON X OFF OFF

7 v&i_r v&i_y v&i_b ON ON ON OFF OFF OFF 8 v&i_b V&I_R V&I_Y ON ON ON OFF X X

9 V&I_B v&i_r V&I_Y ON ON ON X OFF X

10 V&I_B V&I_R v&i_y ON ON ON X X OFF

11 v&i_b v&i_r V&I_Y ON ON ON OFF OFF X 12 v&i_b V&I_R v&i_y ON ON ON OFF X OFF

13 V&I_B v&i_r v&i_y ON ON ON X OFF OFF

14 v&i_b v&i_r v&i_y ON ON ON OFF OFF OFF

SPEC-1538 (REV. 7) 17/23 29-09-2017 SA4301A Anti-Creep Operation (continued) Condition No. Channel Input MAINS LED Indicators DIR LED Indicators 1 2 3 1 2 3 1 2 3 15 v&i_y V&I_B V&I_R ON ON ON OFF X X

16 V&I_Y v&i_b V&I_R ON ON ON X OFF X

17 V&I_Y V&I_B v&i_r ON ON ON X X OFF

18 v&i_y v&i_b V&I_R ON ON ON OFF OFF X 19 v&i_y V&I_B v&i_r ON ON ON OFF X OFF

20 V&I_Y v&i_b v&i_r ON ON ON X OFF OFF

21 v&i_y v&i_b v&i_r ON ON ON OFF OFF OFF V&I_R, V&I_Y and V&I_B are stable phase voltages and currents such that the energy measured on that channel is above the anti-creep threshold. v&i_r, v&i_y and v&i_b are stable phase voltages and currents such that the energy measured on that channel is below the anti-creep threshold. X indicates that the LED can be ON or OFF depending on the energy direction of that specific channel. Phase Sequence Error Indication Condition No. Channel Input MAINS LED Indicators DIR LED Indicators 1 2 3 1 2 3 1 2 3

1 V_R V_B V_Y FLASH FLASH FLASH X X X

2 V_B V_Y V_R FLASH FLASH FLASH X X X

3 V_Y V_R V_B FLASH FLASH FLASH X X X

V_R, V_Y and V_B are stable phase voltages X indicates that the LED can be ON or OFF depending on the energy direction as measured by the SA4301A on that specific channel. Missing Phase Error Indication Condition No. Channel Input MAINS LED Indicators DIR LED Indicators 1 2 3 1 2 3 1 2 3 1 - V V OFF ON ON OFF X X

2 V - V ON OFF ON X OFF X

3 V V - ON ON OFF X X OFF

4 - - V OFF OFF ON OFF OFF X 5 - V - OFF ON OFF OFF X OFF

6 V - - ON OFF OFF X OFF OFF

7 - - - OFF OFF OFF OFF OFF OFF V indicates a stable voltage is present - indicates that the phase voltage is below the voltage detection threshold (approximately 1μARMS). X indicates that the LED can be ON or OFF depending on the energy direction of that specific channel.

SPEC-1538 (REV. 7) 18/23 29-09-2017 SA4301A TYPICAL APPLICATION The following description outlines the basic process required to design a typical three phase energy meter using the SA4301A. The meter is a 3 -phase 4-wire meter capable of measuring 3x220V/60A/50Hz with a precision better than Class 1. The meter uses a stepper motor counter with 100imp/kWh and the calibration LED has a constant of 800imp/kWh. The most important external circuits required for the SA4301A are the current input networks, the voltage input networks as well as the bias resistor. All resistors should be 1% metal film resistors of th e same type to minimize temperature effects. Bias Resistor A bias resistor of R34 = 47k  sets optimum bias and reference currents on chip. Calibration of the meter should be done using the voltage inputs and not by means of the bias resistor. Current Input Networks Three current transformers are used to measure the three line currents. The output of each current transformer is terminated with a low impedance resistor split into two equal parts to obtain purely differential current input signals. The voltage across the termination resistors is converted to the required differential input currents through the current input resistors. Anti -alias filters are incorporated on these input resistors to filter any high frequency signal components that could affect the performance of the SA4301A. The voltage drop across the current transformer termination resistors at maximum rated current should be in the order of 100mVRMS. The current transformers have a low phase shift and a turns ratio of 1:2500. The value of th e termination resistors R1, R2 is therefore 𝑅1 = 𝑅2 = 100𝑚𝑉 × 𝑁𝐶𝑇 𝐼𝑀𝐴𝑋 × 1 2 ≈ 2Ω = 𝑅𝐵 where NCT is the current transformer ratio (2500) and I MAX is the maximum input current (60A). The four current input resistors (R3, R4, R5, R6) should be of equal size to optimize the input networks low pass filtering characteristics, so the values can be calculated as follows: 𝑅3 = 𝑅4 = 𝑅5 = 𝑅6 = 𝐼𝑀𝐴𝑋 𝑁𝐶𝑇 × 𝑅𝐵 2 × 16𝜇𝐴 = 1.5𝑘Ω = 𝑅𝐶 For optimum performance the cut -off frequency of the anti - alias filter should be between 10kHz and 20kHz. The equivalent resistance associated with each capacitor is R C/2 so the capacitor values should be in the order of 𝐶1 = 𝐶2 = 1 𝜋𝑓𝐶𝐼 𝑅𝐶 = 1 𝜋 × 10𝑘𝐻𝑧 × 1.5𝑘Ω ≈ 22𝑛𝐹 = 𝐶𝐶 where fCI is the cut-off frequency of the anti -alias filter of the current input network. The current input networks for channel 2 and channel 3 are identical. Voltage Input Networks The voltage sense inputs require an input current of 11μARMS at VNOM (220V) according to Table 1. The mains voltage is divided by means of a voltage divider to a lower voltage that is converted to the required input current by means of the input resistor. Once again an anti -alias filter is required to remove any high frequency signals that could affect the performance of the SA4301A. The phase shift of the current transformers is compensated by means of this anti-alias filter as well, by purposefully increasing the cut-off frequency. The input resistor R22 sets the current input into the device. This resistor should not be too large else the capacitor for the anti-alias filter will be quite small which could cause inaccurate phase shift due to parasitic capacitances. Therefore R22 = 100k  is chosen and the voltage at the centre of the trimpot should be 1.1V (11μ A x 100k ). The calibration range of the voltage input network should be about ±15% to ensure that all component tolerances can be catered for, so the total tuning range can be set to ±0.17V. Therefore the voltage across the trimpot and R23 is 1.27V. Choosing a 1k trimpot results in 𝑅23 = 1𝑘Ω The effect of R22 can be ignored in the above equation, given the fact that R22 is significantly larger than P1 and R23. Now let RA = R19 + R20 + R21 and 1.27𝑉 − 1) ≈ 637𝑘Ω so choose R19 = 240k, R20 = 220k and R21 = 180k.

SPEC-1538 (REV. 7) 19/23 29-09-2017 SA4301A The cut-off frequency of the anti-alias filter is adjusted so that the phase shift of the voltage input network is identical to the sum of the phase shifts of the current transformer and the current input network. The phase shift of the current input network is 𝜙𝐼𝐼 = − tan−1(𝜋𝑅𝐶𝐶𝐶 × 50𝐻𝑧) ≈ −0.297° The phase shift required on the voltage input network is therefore where CT is the phase shift of the current transformer which is typically about 0.09 degrees for a good quality current transformer. Neglecting R19, R20, R21 and R22 because all these resistors are significantly larger than P1 and R23 the capacitance required to a chieve the -0.207 degree phase shift is 𝐶7 = |tan 𝜙𝐼𝑉| 2𝜋(𝑃1 + 𝑅23) × 50𝐻𝑧 ≈ 3.3𝑛𝐹 resulting in a cut-off frequency of 𝑓𝐶𝑉 = 1 2𝜋(𝑃1 + 𝑅23) × 𝐶7 ≈ 13𝑘𝐻𝑧 The value of the cut-off frequency of the voltage input network is less critical than that of the current input network because the dynamic range of the voltage input is small. A cut -off frequency between 10kHz and 25kHz is acceptable. The voltage input networks for channel 2 and channel 3 are identical Device Setup The SA4301A has to be set to STAND ARD mode. Using Equations 1 and 2 in the Rated Condition Select section the required LED and motor dividers for 800imp/kWh and 100imp/kWh respectively are calculated as DF_LED = 392 and DF_MO = 8. Using Table 2 the device is set up usi ng FMS = V DD, RA = V SS and RB is left floating. To achieve maximum immunity to tampering the device is set to absolute sum mode by setting MS to VDD. Figure 12: Typical application circuit FMS VDD VSS VREF IIP1 IIN1 SA4301A PH3 PH2 PH1 LED MON MOP IVP3 IVP2 IVP1 AGND PH/DIR RA MS 23CT1 R2 2 R1 2 R5 R6 R3 R4 1.5k 1.5k 1.5k 1.5k C1 22nF 22nF 2CT2 R8 2 R7 2 R11 R12 R9 R10 1.5k 1.5k 1.5k 1.5k C3 22nF 22nF 5CT3 R14 2 R13 2 R17 R18 R15 R16 1.5k 1.5k 1.5k 1.5k C5 22nF 22nF IIP2 IIN3 R34 47k-2.5V +2.5V R24 240k R29 240k R19 240k R25 220k R30 220k R20 220k R26 180k R31 180k R21 180k R27 100k R32 100k R22 100k P2 1k P3 1k P1 1k R28 2.7k R33 2.7k R23 2.7k R36 100 R37 100 CNT1 7 6 5 4 3 2 . 1 Pulse +2.5V R35 680 Pulse Out 4N35 R38 1k R39 1k R40 1k Dir2 Dir3 Dir1 Mains1 Mains2 Mains3 RB 8 -2.5V IIN2 LIVE 1 IN LIVE 2 IN LIVE 3 IN NEUTRAL IIP3 LIVE 3 OUT LIVE 2 OUT LIVE 1 OUT 3.3nF 3.3nF 3.3nF C10 220nF C11 220nF C12 1µF +2.5V -2.5V

SPEC-1538 (REV. 7) 20/23 29-09-2017 SA4301A Table 6: Component list for typical application Symbol Description U1 Energy metering device, SA4301ASAR U2 Opto-coupler, 1N35 R1, R2 Resistor, 2, 1%, metal film R3, R41, R5, R61 Resistor, 1.5k, 1%, metal film R7, R8 Resistor, 2, 1%, metal film R9, R101, R11, R121 Resistor, 1.5k, 1%, metal film R13, R14 Resistor, 2, 1%, metal film R15, R161, R17, R181 Resistor, 1.5k, 1%, metal film R19, R24, R29 Resistor, 240k, 1%, metal film R20, R25, R30 Resistor, 220k, 1%, metal film R21, R26, R31 Resistor, 180k, 1%, metal film R221, R271, R321 Resistor, 100k, 1%, metal film R23, R28, R33 Resistor, 2.7k, 1%, metal film R341 Resistor, 47k, 1%, metal film R35 Resistor, 680, 5%, carbon film R36, R37 Resistor, 100, 5%, carbon film R38, R39, R40 Resistor, 1k, 5%, carbon film P1, P2, P3 Trim-pot, 25 turns, 1k C1, C2 Capacitor, 22nF, ceramic C3, C4 Capacitor, 22nF, ceramic C5, C6 Capacitor, 22nF, ceramic C7, C8, C9 Capacitor, 3.3nF, ceramic C102, C112 Capacitor, 220nF, ceramic C122 Capacitor, 1μF, ceramic D1 Light emitting diode, pulse output D2, D3, D4 Light emitting diode, mains voltage output D5, D6, D7 Light emitting diode, energy direction output CT1, CT2, CT3 Current transformer, 60A, 1:2500 CNT1 Stepper motor counter, 100imp/kWh Note 1: Resistors R4, R6, R10, R12, R16, R18, R22, R27, R32 and R34 must be positioned as close as possible to the respective device pins Note 2: Capacitors C10, C11 and C12 must be positioned as close as possible to the V DD and VSS power supply pins

SPEC-1538 (REV. 7) 21/23 29-09-2017 SA4301A PACKAGE DIMENSIONS

SPEC-1538 (REV. 7) 22/23 29-09-2017 SA4301A NOTES

SPEC-1538 (REV. 7) 23/23 29-09-2017 SA4301A DISCLAIMER The information contained in this document is confidential and proprietary to Integrated Circuit Design Centre (Pty) Ltd ("ICDC"), a division of South African Micro-Electronic Systems (Pty) Ltd ("SAMES"), and may not be copied or disclosed to a third party, in whole or in part, without the express written consent of ICDC. The information contained herein is current as of the date of publication; however, delivery of this document shall not under any circumstances create any implication that the information contained herein is correct as of any time subsequent to such date. ICDC does not undertake to inform any recipient of this document of any changes in the information contained herein, and ICDC expressly reserves the right to make changes in such information, without notification, even if such changes would render information contained herein inaccurate or incomplete. ICDC makes no represent ation or warranty that any circuit designed by reference to the information contained herein, will function without errors and as intended by the designer. Any sales or technical questions may be sent to our support e-mail address: support@sames.co.za For the latest updates on datasheets, please visit our web site: http://www.sames.co.za. INTEGRATED CIRCUIT DESIGN CENTRE (PTY) LTD a division of SOUTH AFRICAN MICRO-ELECTRONIC SYSTEMS (PTY) LTD Tel: 012 333 6021 Tel Int: 00 27 12 333 6021 Fax: 012 333 6393 Fax Int: 00 27 12 333 6393 PO BOX 15888 LYNN EAST 0039 REPUBLIC OF SOUTH AFRICA UNIT 4, PERSEQUOR CLOSE

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