X60008B-50 INTERSIL | Alldatasheet
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FN8141.0 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. X60008B-50 Precision 5.0V FGA™ Voltage Reference
FEATURES
- Output Voltage: 5.000V
- Absolute Initial Accuracy = ±0.5mV
- Ultra Low Power Supply Current: 500nA
- Low Temperature Coefficient = 3ppm/°C
- 10 mA Source & Sink Current Capability
- 10 ppm/1000hrs Long Term Stability
- Very Low Dropout Voltage: 100 mV @ no load
- Supply Voltage Range: 5.1V to 9.0V
- 5kV ESD (Human Body Model)
- Standard Package: SOIC-8
- Temp Range: -40°C to +85°C
DESCRIPTION
The X60008-50 FGA™ voltage references are very high precision analog voltage references fabricated in Intersil’s proprietary F loating Gate Analog technology, which achieves superior levels of performance when compared to conventional band gap, buried zener, or X FET™ technologies. FGA™ voltage references feature very high initial accuracy, very low temperature coefficient, excellent long term stability, low noise and excellent line and load regulation, at the lowest power consumption currently available. These voltage references enable advanced applications fo r precision industrial & portable systems operatin g at significantly higher accuracy and lower power levels than can be achieved with conventional technologies.
APPLICATIONS
- High Resolution A/Ds & D/As • Precision Current Sources • Smart sensors
- Digital Meters • Precision Regul ators • Strain Gage Bridges
- Calibration Systems • Precision Oscillators • Threshold Detectors
- V-F Converters • Battery Management Systems • Servo Systems TYPICAL APPLICATION VIN = +6.5V 0.1µF 0.001µF(*) Serial Bus VIN VOUT GND X60008-50 Enable SCK SDAT A/D Converter 16 to 24-bit REF IN 10µF (*)Also see Figure 3 in Applications Information Data Sheet March 14, 2005
2 FN8141.0 March 14, 2005 PACKAGE DIAGRAM PIN CONFIGURATIONS
ORDERING INFORMATION
VIN Power Supply Input Connection VOUT Voltage Reference Output Connection DNC Do Not Connect; Internal Connection – Must Be Left Floating SOIC VIN DNC GND X60008-XX DNC DNC VOUT DNC GND Logo Device Part Number 60008 = Standard Grade B = ±0.5 mV, 3ppm/°C Temperature Range I = -40°C to +85°C Package S8 = 8 lead SOIC V OUT Option 50 = 5.000 V X 60008 B I S8 – 50 X60008B-50
3 FN8141.0 March 14, 2005 ABSOLUTE MAXIMUM RATINGS Voltage on any Pin to these pins. RECOMMENDED OPERATING CONDITIONS COMMENT Absolute Maximum Ratings indicate limits beyond which permanent damage to the device and impaired reliability may occur. These are stress ratings provided for information only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specifica- tion are not implied. For guaranteed specifications and test conditions, see Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
ELECTRICAL CHARACTERISTICS
(Operating Conditions: V IN = 6.5V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +85°C unless otherwise specified.) Note: 1. Over the specified temperature range. Temperature coeffi cient is measured by the box method whereby the change in VOUT is divided by the temperature range; in this case, -40°C to +85°C = 125°C. 2. Thermal Hysteresis is the change in V OUT created by package stress @ T A = 25°C after temperature cycling. V OUT is read initially at TA = 25°C; the X60008 is then cycled between Hot (85°C) and Cold (-40°C) before a second VOUT measurement is taken at 25°C. The deviation between the initial VOUT reading and the second VOUT reading is then expressed in ppm. 3. Dropout voltage (V DO) is the minimum voltage (VIN) into the X60008 which will produce the output voltage (∆VOUT) drop specified in the Electrical Characteristics table. 4. Guaranteed by Device Characterization Temperature Min. Max. Industrial -40°C +85°C Symbol Parameter Conditions Min Typ Max Units VOUT Output Voltage 5.000 V VOA VOUT Accuracy X60008BIS8-50 TA = 25°C -0.50 +0.50 mV IIN Supply Current 500 800 nA VIN Input Voltage Range 5.1 9.0 V TC VOUT Output Voltage Temperature Coefficient(1) X60008BIS8-50 3 ppm/°C ∆VOUT/∆VIN Line Regulation +5.5V ≤ VIN ≤ +8.0V 100 µ V/V ∆VOUT/∆IOUT Load Regulation 0mA ≤ ISOURCE ≤ 10mA -10mA ≤ ISINK ≤ 0mA 100 µV/mA ∆VOUT/∆t Long Term Stability T A = 25°C 10 ppm/ 1000Hrs ∆VOUT/∆TA Thermal Hysteresis(2) ∆T = -40°C to +85°C 50 ppm VDO Dropout Voltage(3) IOUT = 5mA, ∆VOUT = -0.01% 150 300 mV ISC Short Circuit Current(4) TA = 25°C 50 80 mA VN Output Voltage Noise 0.1Hz to 10Hz 30 µ Vpp X60008B-50
4 FN8141.0 March 14, 2005 TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25°C unless otherwise specified) LINE REGULATION Vin (V) 5678 9-50 100 150 200 250 300 350 85°C 25°C -40°C Delta Vo (µV) (normalized to VIN = 6.5V) LINE REGULATION Vin (V) 5678 9 4.9997 4.9998 4.9999 5.0000 5.0001 5.0002 5.0003 5.0004 VOUT (V) (normalized to 5V at VIN = 6.5V)
5 Typical Units
OUTPUT CURRENT (mA) -20 -10 0 10 20 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 0.6 Delta VOUT (mV) -0.3 -15 -5 5 15 SOURCINGSINKING -40°C 85°C 25°C 0.1Hz to 10Hz VOUT NOISE
10 Sec/div
5µV/div Band Pass Filter with 1 zero at .1Hz and 2 poles at 10 Hz X60008B-50
5 FN8141.0 March 14, 2005 TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25°C unless otherwise specified) VOUT vs TEMPERATURE TEMPERATURE (C) -40C -15C 10C +35C +60C4.9980 4.9990 4.9995 5.0000 5.0005 5.0010 5.0015 5.0020 VOUT (V) 4.9985 +85C Normalized to 25°C PSRR vs CAP LOAD FREQUENCY (Hz)
1 Hz 10 Hz 100Hz 1kHz 10kHz
-80 -60 -50 -40 -30 -20 -10 PSRR (dB) -70 100kHz 1 MHz
4 Typical Units
CL=.001µF CL=0 CL=.01µF CL=.1µF 10mA LOAD TRANSIENT RESPONSE 10mA LOAD TRANSIENT RESPONSE 10mA LOAD TRANSIENT RESPONSE 200mV/DIV 200mV/DIV 200mV/DIV CL = .001µF ∆IIN = -10mA ∆IIN = +10mA 500µSEC/DIV 500µSEC/DIV 500µSEC/DIV CL = .1µF ∆IIN = -10mA ∆IIN = +10mA CL = .01µF ∆IIN = -10mA ∆IIN = +10mA X60008B-50
6 FN8141.0 March 14, 2005 TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25°C unless otherwise specified) 50µA LOAD TRANSIENT RESPONSE 50µA LOAD TRANSIENT RESPONSE 50µA LOAD TRANSIENT RESPONSE 50mV/DIV 100µSEC/DIV 20mV/DIV 1mSEC/DIV 50mV/DIV 200µSEC/DIV CL = .001µF C L = .01µF CL = .1µF ∆IIN = -50µA ∆IIN = +50µA ∆IIN = +50µA ∆IIN = -50µA ∆IIN = -50µA ∆IIN = +50µA X60008B-50
7 FN8141.0 March 14, 2005 TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25°C unless otherwise specified) MINIMUM VIN to VOUT DIFFERENTIAL OUTPUT CURRENT (mA) 0- 2 - 4 - 6 - 8 0.05 0.10 0.15 0.20 0.25 0.30 0.35 VIN to VOUT Differential (V) -10 0.40 0.45 0.50 +85C +25C -40C CL=.001µF 0.0 100.0 200.0 300.0 Zout (Ωs) 400.0 500.0 FREQUENCY (Hz) 1 10 100 1K 10K 100KS Zout vs FREQUENCY CL=.01µF CL=.1µF LINE TRANSIENT RESPONSE LINE TRANSIENT RESPONSE LINE TRANSIENT RESPONSE LINE TRANSIENT RESPONSE 200mV/DIV 500µSEC/DIV 200mV/DIV 500µSEC/DIV 200mV/DIV 500µSEC/DIV 200mV/DIV 500µSEC/DIV CL = 0 C L = .001µF CL = .01µF CL = .1µF ∆VIN = -500mV ∆VIN = +500mV ∆VIN = -500mV ∆VIN = +500mV ∆VIN = -500mV ∆VIN = +500mV ∆VIN = -500mV ∆VIN = +500mV vs. OUTPUT CURRENT X60008B-50
8 FN8141.0 March 14, 2005 TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25°C unless otherwise specified) 100 200 300 400 500 600 IIN (nA) 700 800 900 VIN (V) 5.5 6 6.5 7 7.5 8 IIN vs VIN 8.5 9 5 units representative of IIN range 100 200 300 400 500 600 IIN (nA) 700 VIN (V) 5.5 6 6.5 7 7.5 8 IIN vs VIN 8.5 9 -40°C +25°C +85°C TURN-ON TIME TIME (mSec) 0 24680 VIN & VOUT (V) VIN VOUT X60008B-50
9 FN8141.0 March 14, 2005 APPLICATIONS INFORMATION FGA Technology The X60008 series of voltage references use the float- ing gate technology to create references with very low drift and supply current. Essentially the charge stored on a floating gate cell is set precisely in manufacturing. The reference voltage output itself is a buffered ver- sion of the floating gate voltage. The resulting refer- ence device has excellent characteristics which are unique in the industry: very low temperature drift, high initial accuracy, and almost zero supply current. Also, the reference voltage itself is not limited by voltage bandgaps or zener settings, so a wide range of refer- ence voltages can be programmed (standard voltage settings are provided, but customer-specific voltages are available). The process used for these reference devices is a floating gate CMOS process, and the amplifier circuitry uses CMOS transistors for amplifier and output tran- sistor circuitry. While pr oviding excellent accuracy, there are limitations in output noise level and load reg- ulation due to the MOS devi ce characteristics. These limitations are addressed with circuit techniques dis- cussed in other sections. Nanopower Operation Reference devices achiev e their highest accuracy when powered up continuously, and after initial stabili- zation has taken place. For example, power-up drift on a high accuracy reference can reach 20ppm or more in the first 30 seconds, and generally will settle to a stable value in 100 hours or so. This drift can be elimi- nated by leaving the power-on continuously. The X60008 is the first high precision voltage reference with ultra low power consumption that makes it possible to leave power-on continuously in battery operated cir- cuits. The X60008 consumes extremely low supply cur- rent due to the proprietary FGA technology. Supply current at room temperature is typically 500nA which is 1 to 2 orders of magnitude lower than competitive devices. Application circuits using battery power will benefit greatly from having an accurate, stable refer- ence which essentially presents no load to the battery. In particular, battery powered data converter circuits that would normally require the entire circuit to be dis- abled when not in use can remain powered up between conversions as shown in figure 1. Data acqui- sition circuits providing 12 to 24 bits of accuracy can operate with the reference de vice continuously biased with no power penalty, providing the highest accuracy and lowest possible long term drift. Other reference devices consuming higher supply cur- rents will need to be disabled in between conversions to conserve battery capac ity. Absolute accuracy will suffer as the device is biased and requires time to set- tle to its final value, or, may not actually settle to a final value as power-onpower-on time may be short. Figure 1. Board mounting Considerations For applications requiring the highest accuracy, board mounting location should be reviewed. Placing the device in areas subject to slight twisting can cause degradation of the accuracy of the reference voltage due to die stresses. It is normally best to place the device near the edge of a board, or the shortest side, as the axis of bending is mo st limited at that location. Obviously mounting the device on flexprint or extremely thin PC material will likewise cause loss of reference accuracy. Noise Performance and Reduction: The output noise voltage in a 0.1Hz to 10Hz bandwidth is typically 30µVp -p. This is shown in the plot in the Typical Performance Curves. The noise measurement is made with a bandpass filter made of a 1 pole high-pass filter with a corner frequency at .1Hz and a 2-pole low-pass filter with a corner frequency at 12.6Hz to create a filter with a 9.9Hz bandwidth. Noise in the 10KHz to 1MHz bandwidth is approximately 400µVp-p with no capacitance on the output, as shown in Fig. 2 below. These noise measurements are made with a 2 decade bandpass filter made of a 1 pole high-pass filter with a corner frequency at 1/10 of the center frequency and 1-pole low-pass filter with a corner frequency at 10 times the center frequency. Figure 2 also shows the noise in the 10KHz to 1MHz band can be reduced to about 50µVp- p using a .001µF capacitor on the output. Noise in the 1KHz to 100KHz band can be further reduced using a VIN = +6-9V 0.001µF–0.01µF Serial Bus VIN VOUT GND X60008-50 REF IN Enable SCK SDAT A/D Converter 12 to 24-bit 0.01µF10µF X60008B-50
Figure 5. Flat Line Slope Tempco Curves that must operate over a range of temperatures.
12 FN8141.0 March 14, 2005 TYPICAL APPLICATION CIRCUITS Precision 5V, 50mA Reference. VIN = 6V-9V 2N2905 5.0V/50mA 0.009µF VIN VOUT GND X60008-50 ±5.0V Dual Output, High Accuracy Reference VIN VOUT GND GND VIN VOUT X60008-50 X60008-50 0.1µF 0.001µF 5.0V 0.001µF +5.3-9.0V -VIN = -5.5V to -9.0V -5.0V 5.0V - VINR1 = IOUT ; IOUT ≤ 10mA Kelvin Sensed Load 0.1µF +5.3-9.0V VIN VOUT GND X60008-50 VOUT Sense Load R = 200Ω 10µF 10µF X60008B-50
13 FN8141.0 March 14, 2005 TYPICAL APPLICATION CIRCUITS -5.0V R1 Limits max load current VIN VOUT GND X60008-50 R CIN 0.001 C OUT = 0.001µF R1 = 200 -9V with RI = 200Ω; ILOAD MAX = 4mA Negative Voltage Reference VIN VOUT X60008-50 GND 5.3-9.0V 0.1µF .001µF VOUT VCC RH RL X9119 VSS SDA SCL 2-Wire Bus VOUT (buffered) 5V Full Scale Low-Drift 10-bit Adjustable Voltage Source 10µF X60008B-50
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnishe d by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com FN8141.0 March 14, 2005 PACKAGING INFORMATION 0.150 (3.80) 0.158 (4.00) 0.228 (5.80) 0.244 (6.20) 0.014 (0.35) 0.019 (0.49) Pin 1 Pin 1 Index 0.010 (0.25) 0.020 (0.50) 0.050 (1.27) 0.188 (4.78) 0.197 (5.00) 0.004 (0.19) 0.010 (0.25) 0.053 (1.35) 0.069 (1.75) (4X) 7° 0.016 (0.410) 0.037 (0.937) 0.0075 (0.19) 0.010 (0.25) 0° - 8° X 45° 8-Lead Plastic, SOIC, Package Code S8 NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 0.250" 0.050" Typical 0.050" Typical 0.030" Typical