FS9721B FORTUNE | Alldatasheet
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REV. 1.7 FS9721B-DS-17_EN MAY 2014 Datasheet FS9721B 2,400 counts auto range DMM IC, FORTUNE' Properties For Reference Only
Rev. 1.7 2/35 Fortune Semiconductor Corporation 富晶電子股份有限公司富晶電子股份有限公司富晶電子股份有限公司富晶電子股份有限公司 Danshui Town, Taipei County 251, Taiwan Tel.：886-2-28094742 Fax：886-2-28094874 www.ic-fortune.com This manual contains new product information. Fortune Semiconductor Corporation reserves the rights to modify the product specification without further notice. No liability is assumed by Fortune Semiconductor Corporation as a result of the use of this product. No rights under any patent accompany the sale of the product. FORTUNE' Properties For Reference Only
Rev. 1.7 3/35
1 Description
FS9721B is a high performance, low power consumption, 3⅔ digits (2400 Counts) Analog/Digital Converter (ADC+MCU) that is embedded microprocessor. It contains 8 bit microprocessor, low noise and high stability operation amplifier, AC conmutation operation amplifier, voltage promotion and voltage regulated power source, high stability bandgap, auto measurement switch and function control circuit, buzzer driver circuit, clock oscillator circuit, Backlight display control circuit, LCD display driver circuit and so on. Due to FS9721B is embedded microprocessor so that it can control the logic function during passing I/O. Measurement functions can be combined differently by using MEA1 〜MEA4 pins code; through the setting to the code can build the fully auto measurement meter. There are Range, Select, Hold/BLCTR, Rel, Hz/Duty, RS232 and Reset keys so that you can fulfil measurement selection, functions switch, data hold, Backlight display, relative value, frequency and duty cycle measurement, data transmission, reset and so on functions through these keys. FS9721B has series data output function. User can connect the meter to computer to record, analysis, process and print the measured data. With regard to the auto power off function, when there is no action within 30 minutes on the switch or keys of the meter, the system will enter the sleep mode automatically to save the power. In the process of using the meter, if it is not necessary to power off automatically, the function can also be cancelled in use. FS9721B is manufacted by large intergrated circuit technology that has rised hugely the reliability of product and made the design be easy and the volume be small; the system takes low power voltage so as to be low power consumption and is convenient to use the power supply of battery, especially is proper for the use on the palm mode meter. FS9721B is a multi-measurement AC/DC converter that embedded the microprocessor. Only less addition of external components, you can constitute a high accuracy, mult-function and low cost meter.
2 Features
Maximum Display: 2400 (3⅔ digits). Converter Rate: 3 times/sec. The Negative Instruction: Auto. Power Voltage Range: 2.4V〜3.6V. Chip Power Consumption: ≤6mW. Low Battery Warning: About 2.4 V. Buzzer Driver Circuit (Frequency is about 2.7kHz). RS232 Serial Data Output. Embedded OPAMP for DC/AC switch. Function Keys: Range, Select, Hold/BLCTR, Rel, Hz/Duty, RS232, Reset. Unit Symbol and Backlight Display. Auto Power-off.
3 Measurable Modes
Duty Cycle: 0.1%〜99.9%. Diode: 0V〜1.5 V. Short Circuit Testing: Sound when lower than 50Ω. FORTUNE' Properties For Reference Only
Rev. 1.7 4/35
4 Application
Auto-Measurement Palm Mode Digital Multi-Function Meter. Auto-Measurement Card Digital Multi-Function Meter. Auto-Measurement Pen Digital Multi-Function Meter. Auto-Measurement Clinch Meter (Hook Meter, Clamp Meter, etc.) Number Panel Meter.
5 Block Diagram
LCD Driver LCD DisplayFunction,Range Routers,Opamps, Comparators Ohm Source Network Input Diagram 1 Block Diagram
6 Pin Diagram
31 SELECT
32 RANGE
33 REL
34 HOLD
35 HZ/DUTY
36 CAP
37 MEA4
38 MEA3
39 MEA2
40 MEA1
41 LCDC1
42 LCDC2
43 TSTA
44 VSS
46 AGND
48 VDD
56 VGG
58 VDDA
59 RLCD
61 XIN
62 XOUT
64 TXD
66 SEG14
67 SEG13
68 SEG12
69 SEG11
70 SEG10
71 SEG9
72 SEG8
73 SEG7
74 SEG6
75 SEG5
76 SEG4
77 SEG3
78 SEG2
79 SEG1
80 COM1
FS9721BFS9721B FS9721BFS9721B Diagram 2 100 PIN Package FORTUNE' Properties For Reference Only
Rev. 1.7 5/35
7 Pin Description
1 1 OP2N I Negative Input of DC/AC Converter Operation Amplifier
2 NC Empty Pin
3 2 OP2O O Output of DC/AC Converter Operation Amplifier 4 3 ADIP I ADC Positive Input of AC Measurement
5 NC Empty Pin
6 4 ADIN I ADC Negative Input of AC Measurement
7 NC Empty Pin
8 5 SA I ADC Input of Current Measurement 9 6 SGND I ADC Negative Input of Analog Ground Connection 10 7 ADP I Extra ADC Positive Input 11 8 DT I/O Voltage Division Resistance Connect Point of Diode Measurement
12 NC Empty Pin
13 9 SMV I High Resistance Voltage Input/ ADC Positive Input of Resistance Measurement/ Voltage Division Resistance Connect Point of Diode Measurement 14 10 CRES1 I/O Wave Filter Capacitance Connect Point of Measuring Point of Resistance Measurement 15 11 RL I Reference Voltage Negative Input of Resistance Measurement 16 12 NC Empty Pin 17 13 RCAP I/O Calibrating Resistance Connect Point of Capacitance Measurement 18 14 ONEK I/O Resistance 1.001kΩ Connect Point of Voltage and Resistance Measurement
19 NC Empty Pin
20 15 TENK I/O Resistance 10.010kΩ Connect Point of Voltage and Resistance Measurement
21 NC Empty Pin
22 16 HUNK I/O Resistance 101.010kΩ Connect Point of Voltage and Resistance Measurement
23 NC Empty Pin
24 17 ONEM I/O Resistance 1.111MΩ Connect Point of Voltage and Resistance Measurement
25 NC Empty Pin
26 18 TENM I/O Resistance 10.000MΩ Connect Point of Voltage and Resistance Measurement 27 19 CRES2 I/O Regulating Capacitance Connect Point of Voltage and Resistance Measurement 28 20 TSTB I Not Used 29 21 ADPC1 I Maximum Input Voltage 240mV/24mV Selection (See 10.4) 30 22 ADPC2 I DC/AC Selection of Measurement Signal (See 10.4) 31 23 SELECT I Measurement Function Selection 32 24 RANGE I Auto/Manual Measurement Selection 33 25 REL I Relative Value Measurement 34 26 HOLD I Display Hold/Backlight Control 35 27 HZ/DUTY I Frequency/Duty Cycle Measurement Selection 36 28 CAP I Capacitance Measurement Function Selection (See 10.1) 37 29 MEA4 I Measurement Function Selection 38 30 MEA3 I Measurement Function Selection 39 31 MEA2 I Measurement Function Selection 40 32 MEA1 I Measurement Function Selection 41 33 LCDC1 I Segment 14 LCD Symbol Control 1 (See 10.3) 42 34 LCDC2 I Segment 14 LCD Symbol Control 2 (See 10.3) 43 35 TSTA I Test Terminal 44 36 VSS I Negative Input of Power
45 NC Empty Pin
46 37 AGND I Ground Connect Point of Analog Signal FORTUNE' Properties For Reference Only
Rev. 1.7 6/35
47 NC Empty Pin
48 38 VDD I Positive Input of Power
49 NC Empty Pin
50 NC Empty Pin
51 NC Empty Pin
52 39 VB I Bias Current Input
53 NC Empty Pin
54 40 CB I/O Negative Connect Point of Charge Pump Capacitance 55 41 CA I/O Positive Connect Point of Charge Pump Capacitance 56 42 VGG O Output of Charge Pump Circuit
57 NC Empty Pin
58 43 VDDA O Output of the Regulated Voltage Power/ Power Source of the Analog Circuit 59 44 RLCD I Connect Point of Adjust Resistance of the LCD Driver Voltage
60 NC Empty Pin
61 45 XIN I Oscillator Connect Point 62 46 XOUT O Oscillator Connect Point
63 NC Empty Pin
64 47 TXD O RS232 Serial Data Output
65 NC Empty Pin
80 62 COM1 O Backplane 1 of LCD Display 81 63 COM2 O Backplane 2 of LCD Display 82 64 COM3 O Backplane 3 of LCD Display 83 65 COM4 O Backplane 4 of LCD Display 84 66 ENTX I Enable RS232 Output 85 67 BEEPER O Beeper Driver Output 86 68 BLOUT O Backlight Driver Output 87 69 RST I CPU Reset Input
88 NC Empty Pin
89 70 REFI I ADC Reference Voltage Input 90 71 REFO O Bandgap Reference Voltage Output 91 72 FTA O Positive Output of the ADC Wave Pre-filter
92 NC Empty Pin
93 73 FTB I Positive Input of the ADC Wave Pre-filter 94 74 FTC I/O Negative Point of the ADC Wave Pre-filter 95 75 TSTC I Test Pin 96 76 OP1N I Negative Input of the AC Buffer Operation Amplifier
97 NC Empty Pin
98 77 OP1O O Output of the AC Buffer Operation Amplifier
99 NC Empty Pin
100 78 OP2P I Positive Input of the AC/DC Converter Operation Amplifier FORTUNE' Properties For Reference Only
Rev. 1.7 7/35
8 Dice Pad Layout & Pad Coordinate
Substrate should be connected to VSS. Pad opening: 90µm. Chip size: 3.24mm×2.58mm. Diagram 3 78PIN Dice Pad No. Name X[mm] Y[mm] Pad No. Name X[mm] Y[mm] 1 OP2N 0.264 0.077 40 CB 2.974 2.495 2 OP2O 0.404 0.077 41 CA 2.834 2.495 3 ADIP 0.544 0.077 42 VGG 2.694 2.495 4 ADIN 0.669 0.077 43 VDDA 2.569 2.495 5 SA 0.794 0.077 44 RLCD 2.444 2.495 6 SGND 0.919 0.077 45 XIN 2.319 2.495 7 ADP 1.044 0.077 46 XOUT 2.194 2.495 8 DT 1.169 0.077 47 TXD 2.069 2.495 9 SMV 1.294 0.077 48 SEG14 1.923 2.495 10 CRES1 1.419 0.077 49 SEG13 1.798 2.495 11 RL 1.544 0.077 50 SEG12 1.673 2.495 13 RCAP 1.794 0.077 52 SEG10 1.423 2.495 14 ONEK 1.919 0.077 53 SEG9 1.298 2.495 15 TENK 2.044 0.077 54 SEG8 1.173 2.495 16 HUNK 2.169 0.077 55 SEG7 1.048 2.495z 17 ONEM 2.294 0.077 56 SEG6 0.923 2.495 FORTUNE' Properties For Reference Only
Rev. 1.7 8/35 18 TENM 2.419 0.077 57 SEG5 0.798 2.495 19 CRES2 2.544 0.077 58 SEG4 0.673 2.495 20 TSTB 2.669 0.077 59 SEG3 0.548 2.495 21 ADPC1 2.809 0.077 60 SEG2 0.408 2.495 22 ADPC2 2.949 0.077 61 SEG1 0.268 2.495 23 SELECT 3.147 0.077 62 COM1 0.091 2.495 24 RANGE 3.157 0.396 63 COM2 0.077 2.176 25 REL 3.157 0.536 64 COM3 0.077 2.036 26 HOLD 3.157 0.661 65 COM4 0.077 1.911 27 HZ/DUTY 3.157 0.786 66 ENTX 0.077 1.786 28 CAP 3.157 0.911 67 BEEPER 0.077 1.661 29 MEA4 3.157 1.036 68 BLOUT 0.077 1.536 30 MEA3 3.157 1.161 69 RST 0.077 1.411 31 MEA2 3.157 1.286 70 REFI 0.077 1.286 32 MEA1 3.157 1.411 71 REFO 0.077 1.161 33 LCDC1 3.157 1.536 72 FTA 0.077 1.036 34 LCDC2 3.157 1.661 73 FTB 0.077 0.911 35 TSTA 3.157 1.786 74 FTC 0.077 0.786 36 VSS 3.157 1.911 75 TSTC 0.077 0.661 37 AGND 3.157 2.036 76 OP1N 0.077 0.536 38 VDD 3.157 2.176 77 OP1O 0.077 0.396 39 VB 3.148 2.495 78 OP2P 0.083 0.077 FORTUNE' Properties For Reference Only
Rev. 1.7 9/35
9 Technical Specification (VDD=3V= Ta=25 =℃℃ ℃℃
Symbol Parameter Test Condition Min Typ Max Units VDD Recommend Operation Power Voltage 2.4 3.6 V IDD Supply Current At DCV Mode 1.5 2 mA IPO Power Supply Current At Power Off 10 μA VIH Digital Input High Voltage VDD-0. V VIL Digital Input Low Voltage 0.5 V Ipu Pull up Current Vin=0 5 10 μA AGND Analog Ground Voltage VDD/2 -3% VDD/ VDD/ +3% V VDDA Analog Power 3.4 3.7 4 V VBAN D Build in Reference Voltage Relative to AGND 1.1 1.25 1.4 V Build in Reference Voltage Output Voltage Coefficient ppm/V REFI Recommend Reference input Voltage Relative to AGND 0.44 V VBATT Low Battery Detector Voltage 2.25 2.4 2.55 V FLCD LCD Frame Frequency 32 Hz VLCD LCD Pk-Pk Driver Voltage 2.8 3 3.2 V FBEEP Beeper Frequency 2.7 kHz FRS23 RS232 Baud Rate 2400 Hz IRSOU T RS232 Output High Current VOH=2V 2 mA Zero Input Reading DC ADPxl Input=0V -0.001 0.00 0.001 Linearity (Max. Deviation From Best Straight Line Fit DC ADPxl Input,Full Scale±240.0mV -1 0 +1 Counts AC Measurement Bandwidth Error AC ADPxl Input240mVrms 20Hz~1kHz 0.2 % Rcc Continuity Check Value 10 60 Ohm ADC Measurement O.L Display Count 2500 Counts Autorange Up Counts 2400 Counts Autorange Down Counts 230 Counts VFREA Frequency Counter Input Level (Hz/Duty Control) VIL(Relative to AGND) -60 mV VIH(Relative to AGND) 60 mV FMAX A Frequency Counter Max Input frequency (Hz/Duty Control) Vpp=±100mV Square Wave Input 500k Hz *1 Duty Measurement Min Pulse Width Error (Hz/Duty Control) Vpp=±100mV Square Wave Input 1 μS VFRED Frequency Counter Input Level (MEAS=0101) VIL(Relative to AGND) -600 mV VIH(Relative to AGND) 600 mV FMAX D Frequency Counter Input Level (MEAS=0101) Vpp=±600mV Square Wave Input 5M Hz *1 Duty Measurement Min Pulse Width Error(MEAS=0101) Vpp=±600mV Square Wave Input 100 nS FORTUNE' Properties For Reference Only
Rev. 1.7 10/35 Capacitor Measurement Accuracy after Zero Input Relative To Adjust by 250.0nF Mode 2.500nF Mode 5%+2 Counts 25.00 nF Mode 2%+1 Counts 250.0 nF Mode 0.5% Counts 2.500 μF Mode 1%+2 Counts 25.00 μF Mode 1.5% Counts *1 In the duty cycle measurement, we have to input square waves. The main error of the measurement is due to the error of the pulse width that the comparator can resolve. Suppose the error is 100ns and the input frequency is 100KHz. We can divide the square wave into 1000 segments (1000 counts), and thus each count takes 10 ns. Therefore the maximum error in Duty Cycle measurement is (100ns/10ns)=10 Counts. 50% duty cycle signal can be measured to 50.0%±1.0%. The signal may not be measured if the duty cycle is more than 99% or less than 1%, and the measurement will display 0.00%.
10 Measurement Mode Selection
10.1 Measurement Mode Selection (MEA1〜MEA4 is “1” for empty, and “0” for connect to VSS)
M E A M E A M E A M E A Measurement Function and Select Key Function Switch Hz/Duty Rel Hold Range Select Jump 1 1 1 1 DCV/A CV DCV/ACV Switch Hz/Duty Voltage Switch
- ● J4 Ohm/Di ode/ Continu ity /Cap. CAP=1: Ohm/Diode/ Cont. Switch CAP=0: Ohm/Diode/ Cont./Cap. Switch Ohm● J3, J5 1 0 1 0 DCV No mV Mode V/Hz/Duty Switch
- J4 1 0 0 1 ACV V/Hz/Duty Switch
- J4 1 0 1 1 DCmV mV/Hz/Duty/ Switch 1 0 0 0 10A DCA/ACA Switch A/Hz/Duty Switch
- ● 1 1 1 0 mA DCmA/ACm A Switch mA/Hz/Duty Switch
- ● J1 1 1 0 0 μA DCμA/AcμA Switch μA/Hz/Duty Switch
- ● J2 0 1 1 1 Cap ● ● J3, J5 0 1 0 1 Hz/Dut y Hz/Duty Switch 0 0 1 1 Input from ADP 0 0 1 0 0 0 0 1 FORTUNE' Properties For Reference Only
Rev. 1.7 11/35 0 0 0 0 Please Refer to Form 10.2 0 1 1 0 Input from ADP Note: ① The “JX” in Jump column means the JX of the measurement function is open circuit in the diagram that common used by diagram 6 and 7. ② In Auto mode, the ACmv Measurement of ACV mode can be selected only when the Range key is pressed. ③ This mode uses ADP path input to measure Hz/Duty. ④ ADP can auto-range for 240.0mV/24.00mV, and display 2400 and 240.0, respectively.
10.2 Determination of ADP Input and Self-defined Symbol and Decimal Location
(MEA1〜MEA4 is “1” for empty, and “0” for connect to VSS) MEA4 MEA3 MEA2 MEA Range of Input Voltage Input Channel Decimal Location Symbol Location Symbol 0 0 1 1 ±240mV ADP
2400 Set by
0 0 1 0 240.0 0 0 0 1 24.00 0 0 0 0 2.400
10.3 Use the Combination of LCDC1 and LCD2 to Determine the Self-defined Symbol Location
(LCDC1 and LCDC2 is “1” for empty, and “0” for connect to VSS) LCDC1 LCDC2 Symbol Location
Description
0 0 COM1, SEG14 User Defines Symbol 1 0 COM2, SEG14 0 1 COM3, SEG14 1 1 COM4, SEG14
10.4 The Function of ADPC1 and ADPC2 in ADP Input
(ADPC1 and ADPC2 is “1” for empty, and “0” for connect to VSS) ADPC1 ADPC2 DC/AC Status ADP Maximum Input Voltage 1 1 DC 240mV 1 0 AC 0 1 DC 24mV 0 0 AC FORTUNE' Properties For Reference Only
Rev. 1.7 12/35
11 Keys Definition
Range (Auto/Manual Measurement Switch) Range key is the key to switch Auto/Manual Measurement and it acts in activation. The default is Auto Measurement when power is on. To press one time, the system will switch to Manual Measurement. In Manual Measurement mode, the system will jump one range up when the key is pressed one time. If continue to press the key in the top range, the system will jump to the lowest range, and recircle orderly. If press and hold the key over 2 seconds, the system will switch to Auto Measurement mode. The Hz/Duty Cycle cannot be measured by Manual Measurement. Hold/BLCTR (Display Hold/Backlight Control) Hold/BLCTR key is the key to control Display Hold/Backlight and it acts in activation. The functions are: hold the display data/Backlight control. When the key is pressed, the display data will be locked and keep unchanged; if press the key again, the system will be unlocked and enter the normal measurement mode. When press and hold the key over 2 seconds will enable Backlight. Rel (Relative Value Measurement) Rel key is the key to measure Relative Value and it acts in activation. All controls can measure Relative Value except Hz/Duty, Diode and Continuity functions. Select (Function Switch) Select is the key to select the functions and it acts in activation. Use the key to select the function to measure. RS232 (Series Output Control) RS232 is the key to control the Series Output and it acts in lock mode. When the key is close, LCD displays RS232 symbol that means the meter is in the data transmission status and can transmit the data outside; when the key is open, the system will secede and the data transmission will be stop. Hz/Duty(Frequency/Duty Cycle) Hz/Duty is the key to select Frequency/Duty Cycle and it acts in activation. In Frequency Measurement Mode, press the key is to select Hz or Duty Measurement; in AC/DC Mode, press the key is to select Voltage /Hz/Duty or Current/Hz/Duty Measurement Mode. Reset (Reset Key) Reset is the key to reset the system and it acts in activation. Press the key is to reset the microprocessor.
12 Other Functions
In the process of measurement, if no any action is operated in 30 minutes for function keys or function switch, the meter will be “Auto Power-Off” (Standby Mode). In Auto Power-Off status, if the function keys are pressed or the function switch is activated, the meter will be “Auto Power-On” (Working Mode). If press and hold Select key to power on, Auto Power-Off function will be disabled. In RS232 working status, Auto Power-Off function will be disabled. Buzzer In short testing, if the resistance is lower than 50Ω, the beeper will sound. Backlight The system has the Backlight driver output function to control the Backlight circuit open so as to provide the convenience of reading the value when in the dim light and poor vision. When press the Hold/BLCTR key over 2 seconds, Backlight will open; when press the key again over 2 seconds, Backlight will close. Series Data Output The system has the series data output function. When the meter connect to the equipment with series data interface (RS232) such as computer, it can output the measured data (including symbols) for the convenience to record, analysis, process and print the measured result. FORTUNE' Properties For Reference Only
Rev. 1.7 13/35
13 RS232 Transmission Protocol
Direction: One-way to computer. Series Transmission Rate: 2400 bps Data Bit: 8 bit. Odd and Even Calibration: None Data Decimal: Hex Data Length: 14 Bytes. Data Information: LCD table on-off information. Data Format: 1st byte → 1X (X is seg1, 4 bits represent the data on the LCD table) 2nd byte→ 2X (X is seg2, 4 bits represent the data on the LCD table) 3rd byte → 3X (X is seg3, 4 bits represent the data on the LCD table) and so on. 1X → 4 bit, 2X→ 4 bit, 3X→ 4 bit EXH→ 4it X means: Bit3〜Bit 0→ segn (COM4―COM1) Sampling Rate: 40KHz ADC Output Frequency: 40Hz ADC Output Frequency after Average: 10Hz Output Frequency after Auto-Zero: 4Hz
14 LCD Display -- FS9721B/Q100(C2=LCDC2= C1=LCDC1=
Notes: 1. Working Voltage: 3V. 2. Drive Method: 1/4 Duty, 1/3 Bias. Diagram 4 LCD Display Structure FORTUNE' Properties For Reference Only
Rev. 1.7 14/35 Diagram 5 LCD Display COM Drive Wave FORTUNE' Properties For Reference Only
Rev. 1.7 15/35 15. 1 Common Use Circuit Diagram A．100 PIN Package IC LCD BP1 BUZZER 100k VDD R10 500kR8 40k VR1 VR10k 20k 10k 90k C11 4.7uF VR2 VR2k R13 28.5k R12 22k R11 100k R14 22k 1N914 1N914 R15 100k uA/mA COM10A V/Ohm/Diode/Cap R18 100k R19 900k DCmV R16 0.99 R17 R28 0.01 uA mA R20 100k R21 57.4k R22 R23 10k R24 101.01k R25 1.111M DCV/ACV R26 10M Ohm/Cap/Diode HZ/DUTY HOLD REL RANGE SELECT 10uF 10uF BT1 BATTERY XTAL 4M HZ 200k 10uF 10uF 174k 10uF ADP BLOUT ADP2 PTC 500 27nF C12 27nF 0.47uF C10 0.47uF Ohm Cap Diode C13 27nF C14 47nF 10nF RESET R30 1k D3 VDD D4R29 220 S10 S11 S12 S13 S15 S16 10k R27 10k S14 OP2N1 N.C.2 OP2O3 ADIP4 N.C.5 ADIN6 N.C.7 SA8 SGND9 ADP10 DT11 N.C.12 SMV13 CRES114 RL15 N.C.16 RCAP17 ONEK18 N.C.19 TENK20 N.C.21 HUNK22 N.C.23 ONEM24 N.C.25 TENM26 CRES227 TSTB28 ADPC129 ADPC230 COM281 COM382 COM483 ENTX84 BEEPER85 BLOUT86 RST87 N.C.88 REFI89 REFO90 FTA91 N.C.92 FTB93 FTC94 TSTC95 OP1N96 N.C.97 OP1O98 N.C.99 OP2P100 FS9721B IC C16 0.1uF Hz C15 10uF R32 100k R31 ADP 27nF S17 RS233 VSS VDD VGG VDDA AGND Battery Negative Terminal and IC Negative Power Input IC Analog Power about 3.9V Battery Positive Terminal and IC Positive Power Input Analog Common about VDD/2 VDD Charge Pump voltage about 2*VDD Diagram 6 100 PIN Common Use Circuit Diagram FORTUNE' Properties For Reference Only
Rev. 1.7 16/35 B. 78 PIN Dice IC LCD BP1 BUZZER 100k VDD R10 500k R8 40k VR1 VR10k 20k 10k R9 90k C11 4.7uF VR2 VR2k R13 28.5k R12 22k R11 100k R14 22k 1N914 1N914 R15 100k uA/mA COM10A V/Ohm/Diode/Cap R18 100k R19 900k DCmV R16 0.99 R17 R28 0.01 uA mA R20 100k R21 57.4k R22 R23 10k R24 101.01k R25 1.111M DCV/ACV R26 10M Ohm/Cap/Diode HZ/DUTY HOLD REL RANGE SELECT 10uF 10uF BT1 BATTERY XTAL 4M HZ R3200k 10uF 10uF 174k 10uF ADP BLOUT ADP2 PTC 500 27nF C12 27nF 0.47uF C10 0.47uF Ohm Cap Diode C13 27nF 10nF RESET C14 47nF R30 VDD D4R29 220 S10 S11 S12 S13 S15 S16 R27 10k S14 10k C16 0.1uF Hz C15 10uF R32 100k R31 ADP OP2N1 OP2O2 ADIP3 ADIN4 SA5 SGND6 ADP7 DT8 SMV9 CRES110 RL11 RCAP13 ONEK14 TENK15 HUNK16 ONEM17 TENM18 CRES219 TSTB20 ADPC121 ADPC222 SELECT 23RANGE 24REL 25HOLD 26HZ/DUTY 27CAP 28MEA4 29MEA3 30MEA2 31MEA1 32LCDC1 33LCDC2 34TSTA 35VSS 36AGND 37VDD 38VB 39 CB 40CA 41VGG 42VDDA 43RLCD 44XIN 45XOUT 46TXD 47SEG14 48SEG13 49SEG12 50SEG11 51SEG10 52SEG9 53SEG8 54SEG7 55SEG6 56SEG5 57SEG4 58SEG3 59SEG2 60SEG1 61 COM162 COM263 COM364 COM465 ENTX66 BEEPER67 BLOUT68 RST69 REFI70 REFO71 FTA72 FTB73 FTC74 TSTC75 OP1N76 OP1O77 OP2P78 FS9721B NC12 IC 27nF S17 RS232 VSS VDD VGG VDDA AGND Battery Negative Terminal and IC Negative Power Input IC Analog Power about 3.9V Battery Positive Terminal and IC Positive Power Input Analog Common about VDD/2 VDD Charge Pump voltage about 2*VDD Diagram 7 78 PIN Common Use Circuit Diagram FORTUNE' Properties For Reference Only
Rev. 1.7 17/35
15.2 FS9721B Technical Pointer and Components Relationship
Mode×10 (R9:R7=9:1 ) AC Measurement (R13+VR2,R12= R14) Voltage Reference (R8,R6,VR1 ) DC 240mV R26 No No Yes DC 2.4V R25/(R26+R25)=1/10 No No Yes DC 24V R24/(R26+R24)=1/100 No No Yes DC 240V R23/(R26+R23)=1/1000 No No Yes DC 1000V R22/(R26+R22)=1/10000 No No Yes AC 240mV R25/(R26+R25)=1/10, R9:R7=9:1 No Yes Yes AC2.4V R25/(R26+R25)=1/10 No Yes Yes AC 24V R24/(R26+R24)=1/100 No Yes Yes AC 240V R23/(R26+R23)=1/1000 No Yes Yes AC 1000V R22/(R26+R22)=1/10000 No Yes Yes R 240Ω R26//R22=1kΩ No No No R 2.4kΩ R26//R22=1kΩ No No No R 24kΩ R26//R23=10kΩ No No No R 240kΩ R26//R24=100kΩ No No No R 2.4MΩ R26//R25=1MΩ No No No R 24MΩ R26=10MΩ No No No DC 240μA R17+R16+R28=100Ω Yes No Yes DC 2400μA R17+R16+R28=100Ω No No Yes DC 24mA R16+R28=1Ω Yes No Yes DC 240mA R16+R28=1Ω No No Yes DC 10A R28=0.01Ω Yes No Yes AC 240μA R17+R16+R28=100Ω Yes Yes Yes AC 2400μA R17+R16+R28=100Ω No Yes Yes AC 24mA R16+R28=1Ω Yes Yes Yes AC 240mA R16+R28=1Ω No Yes Yes AC 10A R28=0.01Ω Yes Yes Yes CAP R21 No No No Diode No No Yes FORTUNE' Properties For Reference Only
Rev. 1.7 18/35
15.3 FS9721B (Diagram 6 and Diagram 7 ) Components List
R1 100kΩ R13 28.5kΩ R25 1.111MΩ C5 10μF D1 1N914 R2 1MΩ R14 22kΩ R26 10.000M Ω C6 10nF D2 1N914 R3 200kΩ R15 100kΩ R27 10kΩ C7 27nF D3 DioS R4 100kΩ R16 9.99Ω R28 0.01Ω C8 0.47μF D4 DioR R5 10kΩ R17 990Ω R29 1kΩ C9 27nF VR1 10kΩ R6 20kΩ R18 100kΩ R30 220Ω C10 0.47μF VR2 2kΩ R7 10kΩ R19 900kΩ R31 1MΩ C11 4.7μF LCD LCD R8 40kΩ R20 100kΩ R32 100kΩ C12 27nF XTA L 4MHz R9 90kΩ R21 57.4kΩ C1 10μF C13 27nF IC FS9721 B R10 500kΩ R22 1.001kΩ C2 10μF C14 47nF Batte ry 1.5V×2 R11 100kΩ R23 10.010kΩ C3 10μF C15 10μF BP1 Buzzer R12 22kΩ R24 101.010kΩ C4 10μF C16 0.1μF PTC 500Ω Note: The technical instructions such as the accuracy, duty and press-proof of resistance and capacitance components are not marked in the common use circuitry and the components list, they depends on users’ actual needs when designing the products.
15.4 Power System
C16 0.1uF REFI R8 40kR6 20k VR1 Diagram 8 Power Circuit FORTUNE' Properties For Reference Only
Rev. 1.7 19/35 2*VDD 3.9V 1.2V 0.4V 1.5V 1.5V VGG VDDA REFO REFI VDD AGND VSS FS9721B RLCD Diagram 9 Relative Voltage of Each Point VB is the bias current input point in IC. The increase of R4 will reduce the current consumption in IC, but the shortage of bias current will affect the input range of AC measurement. AGND is the analog ground connection. Its value is equal to the middle point of battery voltage. The point value is generated in the IC and cannot connect to the middle point of battery. C4 and C5 are bypath capacitance, and also to make AGND regulated to VDD and VSS. C2 is power pump capacitance. IC makes VDD voltage pass C3 to charge/discharge to rise VGG being about double voltage of VDD. VDDA is the output voltage after the regulation of VGG in the IC. It is about 3.9V that relative to VSS. REFO is the bandgap power source in the IC. It is about 1.2V that relative to AGND and has 100ppm/ ℃ stability.
15.5 Power Supply Circuit
The different applications of user make different power supply methods. In some measurements, sensor requires higher voltage such as OPAMP , Hale components and so on that it is difficult to supply the power by 3V, then you can take some power supply methods as below. 10uF 10uF VDD AGND VSS FS9721B Diagram 10 3V Power Supply FORTUNE' Properties For Reference Only
Rev. 1.7 20/35 10uF 10uF DC-TO-DC 10uF 4.5~9V VDD AGND VSS FS9721B Diagram 11 4.5V 〜9V Power Supply 10uF 10uF 6V~12V 2V~2.4V 2V~2.4V VDD AGND VSS FS9721BV- Diagram 12 6V〜12V Power Supply NJM79L03AOUTIN 1N41481N4148 9V~12V 10uF 10uF VDD AGND VSS FS9721B Diagram 13 9V〜12V Power Supply
15.6 Basic Power Source
FORTUNE' Properties For Reference Only
Rev. 1.7 21/35 40K VR1 10K REFI REFO FS9721B 20K Diagram 14 Utility of Internal Basic Power Source 20K 20K 15k VGG ICL8069A REFI FS9721B Diagram 15 Utility of External Basic Power Source
15.7 Activated Reset Circuit
FORTUNE' Properties For Reference Only
Rev. 1.7 22/35
15.8 Crystal Oscillator Circuit
Diagram 17 Crystal Oscillator Circuit In the diagram, R2 provides the statical working point for the revisor; CX2 is for tiny adjustment of frequency; CX1 is temperature compensation. In less requirements situation, CX1 and CX2 can be unused.
15.9 Buzzer Driver Circuit
Diagram 18 Low Resistance Beeper Connection BUZZER BJ1 BEEPER FS9721B 10k VDD Diagram 19 High Resistance Beeper Connection FORTUNE' Properties For Reference Only
Rev. 1.7 23/35
15.10 Mode Switch and Function Control Circuit
Diagram 20 Mode Switch and Function Control Circuit S3〜S4 andS10〜S17 are Lock switch. The function of S3〜S4, please refer to 10.3. The function of S15 〜S16, please refer to 10.4. The function of S10 〜S13, please refer to 10.1. The selection of doing the capacitance measurement when S14 is the same mode in Ohm/Diode/Continuity/Cap., please refer to 10.1. S17 is the control switch of RS232 output. S2 and S5 〜S9 are function selection switch and act in activation. For their functions, please refer to “Keys Definition” and “Other Functions”. In actual application, the utility of switch and keys should be taken according to the real situation. FORTUNE' Properties For Reference Only
Rev. 1.7 24/35
15.11 AC Commutation Circuit
Diagram 21 is the average commutation circuit diagram of FS9711B. In the circuit, AC signals enter IC through R26, and then in the process of voltage division through R26, R25, R24, R23 and R22. The divided AC signals are out from OP1O pin and enter IC through ADIP pin and ADIN pin after commutation. VR2 can adjust the voltage of the signals to do the calibration of AC measurement. 240mV mode is amplified 10 times through OP . Diagram 22 is the peak commutation circuit diagram. Diagram 23 is the true validity commutation circuit diagram, the user can determine by self according to the need to select which commutation circuit. 90k 10k C11 4.7uF R13 28.5k VR2 VR2k R12 22k R14 22k 0.47uF C10 0.47uF R11 100k R15 100k C12 27nF 27nF To Digit PartINL INH To ADC V- To ADC V+ ADIP ADIN OP2O OP2N OP1O OP1N To ADC V+ FS9721B Diagram 21 Average Commutation Circuit Diagram 90k 10k C11 4.7uF R13 28.5k 27nF To Digit PartINL INH To ADC V- To ADC V+ ADIP ADIN OP2O OP2N OP1O OP1N R12 100k To ADC V+ FS9721B OP2P Diagram 22 Peak Commutation Circuit FORTUNE' Properties For Reference Only
Rev. 1.7 25/35 Input Ampcifier 33uF 100k 0.1uF 10uF 28k1k 1uF 1uF 4 5 8Full Wave Rectigier RMS core Bias Section VSS ADIN ADIP OP1O VGG AD737 FS9721B Diagram 23 True Validity Commutation Circuit FORTUNE' Properties For Reference Only
Rev. 1.7 26/35
15.12 Voltage Measurement
V V R8 40k R620k R251.111M R24101.01k R23 10k R22 1k R2610M R27 10k Diagram 24 Voltage Measurement When doing the voltage measurement, the measuring voltage is input from resistance R26, and DCmV is not divided, but enter IC directly; 2.4V, 24V, 240V, 1000V mode is divided by R25, R24, R23, R22 and R26 to gain 1/10, 1/100, 1/1000, 1/10000 voltage, then enter IC. To adjust the resistance value of VR1 can do the calibration of measurement. Voltage Division of Voltage Measurement Diagram is as below: Vout=0.1V Vout=0.1V Vout=0.1V Vout=0.1V Vin=1V Vin=10V Vin=100V Vin=1000V R26 10M R26 10M R26 10M R26 10MR25 1.111M R24 101.01k R23 10k R22 Diagram 25 Voltage Division Circuit Diagram The formula of voltage division is: Vout=Vin × [Rs/ (R26+Rs )] Rs is R25, R24, R23 or R22 Therefore, the accuracy of R22, R23, R24, R25 and R26 determine the accuracy of the measurement. AcmV enter IC through R26 and is divided by R25 and R26 to get 1/10 voltage, then is amplified 10 times internal to fulfill the measurement, so the accuracy of R9 and R7 is also determine the measuring accuracy of ACmV.
15.13 Current Measurement
0.99 R28 0.01 0.5A/250V 10A/250V COM SA SGND FS9721B 米A/mA 10A R27 90k 10k OP1O OP1N 10k Diagram 26 Current Measurement FORTUNE' Properties For Reference Only
Rev. 1.7 27/35 When doing the current measurement, the current signals enter IC through R5. The sampling resistance of μA mode is (R16+R17+R28), the sampling resistance of mA mode is (R16+R28) and the sampling resistance of 10A mode is R28. They are measured respectivly through the mode switch. When measuring μA, J1 is open and J2 is close; when measuring mA, J2 is open and J1 is close; the large current enters through 10A port. The maximum reduced voltage for μA, mA and 10A modes is 0.24V. These voltages are input voltage comparator to compare. If the voltage is smaller than 24mV, it will be sent to 10 times amplifier to amplify, then sent to A/D converter; if the voltage is larger than 24mV, the system will work the auto-ranging signal, and jump up one mode under the control of microprocessor and send the current signal directly to the A/D converter.
15.14 Resistance Measurement
R24 101.01K R26 10M R25 1.111M Rx R20 100k RL R27 10k Diagram 27 Resistance Measurement Resistance measurement refers to standard resistance, and then takes a comparison between measuring resistance and standard resistance to get the measuring resistance value. The standard resistance of 24MΩ mode is 10MΩ (R26). The standard resistance of other modes are to parallel respectively R26 and R25, R24, R23, R22 to get 1MΩ, 100kΩ, 10kΩ, 1kΩ resistance. When doing resistance measurement, internal IC will generate 0.4V voltage (relative to AGND), the voltage is output respectively to measuring resistance through resistance R26 and R25, R24, R23, R22 to proceed the measurement comarison. R20 connects to RL. It is the negative end through the standard resistance to get the voltage reference. J3 and J5 are mode switch. When doing resistance measurement, J3 and J5 are close. C13 is the wave filter capacitance of measuring point in resistance measurement.
15.15 Diode Test
Diagram 28 Diode Measurement Diode test is to generate 1.5V voltage from internal IC and output through R22, then add to the positive of diode through PTC. The positive voltage reduction V Ｄgenerated by diode is about 0.5V-0.7V. VＤ is divided by R18 and R19, and get 1/10 VＤ, then is amplified 10 times by internal OP to display VD value. J3 and J5 are mode switch. When doing diode measurement, J3 and J5 are close. FORTUNE' Properties For Reference Only
Rev. 1.7 28/35
15.16 Short Circuit Testing
Diagram 29 Short Circuit Testing Short circuit testing is proceeded in 240Ωresistance mode. 0.4V voltage (relative to AGND) is generated by internal IC and output through R22, then add to short measuring point through PTC. J3 and J5 are mode switch and are close during doing short circuit testing. Rx gets voltage V Rx, and input IC through R19. If Rx smaller than 50Ω, the beeper will sound.
15.17 Capacitance Measurement
57.4k R19 900k RCAP SMV SGND PTC 500 Cap COM CX FS9721B DO- DO+ DO- DO+ CMP DO+ DO- VDD AGND 3/4VDD 1/4VDD R27 10k Typical Wave of Input End 3/4VDD 1/4VDD VDD Tdo Diagram 30 Capacitance Measurement Capacitance measurement is to charge/discharge to measuring capacitance through R21 to form a oscillation, then calculate the cycle of oscillation to get the capacitance value. To adjust R21 can calibrate the value in capacitance measurement. J3 and J5 are mode switch. When doing capitance measurement, J3 and J5 are close. (In actual application, if the linearity is worse when doing 2.5nF measurement, you can take a consideration of paralleling a proximate 1000pF capacitance in input end of capacitance measurement during design. When doing the measurement, to press REL key and make the value be zero before measuring. The linearity of the smaller measurement in capacitance mode will be better.) FORTUNE' Properties For Reference Only
Rev. 1.7 29/35
15.18 Frequency Measurement
Diagram 31 Frequency Measurement Diagram 32 Package Outline FORTUNE' Properties For Reference Only
Rev. 1.7 30/35
17 Demo Board
A B C D 4321 D C B A Title Number RevisionSize Letter Date: 26-Feb-2002 Sheet of File: D:\\Schematic\\FS9711_6\\9721V1-6.sch Drawn By: COM281 COM382 COM483 ENTX84 BEEPER85 BLOUT86 RST87 N.C.88 REFI89 REFO90 FTA91 N.C.92 FTB93 FTC94 TSTC95 OPIN96 N.C.97 OP1O98 N.C.99 OP2P100 OP2N1 N.C.2 OP2O3 ADIP4 N.C.5 ADIN6 N.C.7 SA8 SGND9 ADP10 DT11 N.C.12 SMV13 CRES114 RL15 N.C.16 RCAP17 ONEK18 N.C.19 TENK20 N.C.21 HUNK22 N.C.23 ONEM24 N.C.25 TENM26 CRES227 TSTB28 ADPC129 ADPC230 FS9721B/Q100 FS9711G/I 4M Hz 200K 10uF 10uF 100k SW1 SW DIP-8 S1 SW-PB S2 SW-PB S3 SW-PB S4 SW-PB S5 SW-PB SW2 SW DIP-2 + C4 10uF VDD 47nF R11 10M R12 R13 1.111M R14 101.0K R15 10K R18 VR1 VR30K R6100K 27nF R19 900K 100K R16 10K OHM/CAP/DIODE DCV/ACV DCmV/OHM/CAP/Diode COM1 U5 BUZZER 100K C10 10nF VDD R20 40K R22 20K VR2 VR10K R23 500K 27nF R24 90K R17 10K VR3 VR2KR25 28.5K R26 22K R27 22K 1N914 1N914 100K R10 100KC8 27nF 27nF BLOUT ADP TXD FS9721 DESIGN KIT SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 COM2 COM3 COM4 COM5 10uF ENTX ENTX R21 40K SW-SPDT UB1 3V BATTERY ADP/ADP1 U6 J4 Hz ADP2 VR4 40k DioS RSO1 VDD TXD RS232 ENABLE A C GAIN CAP GAIN 1 2 DioR port1 DB9M SW3 SW DIP-2 V/OHM/Diode/CAP C11 10uF R28 180 LED VREF TEMP GAIN R29 220 SW-PB HZ/DUTY H OLD REL RANGE SELECT BLCTR SELECT hFE Input ADP Input ADP ADP2 Input ADP2 JMP1 Temp1 J10 Temp2 C12 10uF TSTB TSTB ADP2 U7 C13 10uF R2 0.1uF 0.47uF 0.47uF Diagram 33 Demo Board Schematic FORTUNE' Properties For Reference Only
Rev. 1.7 31/35 Demo Board Location RS232 PORTRS232 PORTRS232 PORTRS232 PORT Power SW SW DIP-8 S1S2S3S4S5S6 VR4 50KVR2 50KVR3 2K U6 U5 U4 hFE Input ADP Input ADP2 Input JMP1 Hz DCmV/OHM/CAP/Diode DCV/ACV VR1 50KVR1 50KVR1 50KVR1 50K DCmV/OHM/CAP/Diode IC FS9721_LP1 IC FS9721_LP3 ADP2 ADP/ADP1 COM1 V/Diode/OHM/CAP Temp1 Temp2 J10 LCD MODULE SW3 DIP-2 1 2 SW2 DIP-2 * FS9721_LP3 Use * FS9721_LP1 No Use Temp GainVrefAC Gain CAP Gain * FS9721B/Q100 Use RS232 ON/OFF Hz/duty Hold REL Range Select BL_CTR (LP3 / Q100 Use) MEA4 MEA3 MEA2 MEA1 CAP LCDC1LCDC2 TSTB ADPC1 ADPC2 IC FS9721B/Q100 Diagram 34 Demo Board Location 17.2.1 U4: Input Voltage, Resistance, Diode and Capacitance. 17.2.2 U5: Analog Signal to Ground. 17.2.3 U6: Input Voltage (mV), Hz and Duty Cycle. 17.2.4 U7: Current Mode Measuring Terminal. (Input Voltage) 17.2.5 J1~J10: Please refer to “FS9721B/Q100 Measurement Mode and Jumper Setup”. 17.2.6 S1~S6: Please refer to “FS9721B/Q100 Demo Board Schematic”. FORTUNE' Properties For Reference Only
Rev. 1.7 32/35
17.2.7 SW-DIP8: (If switch SW to ON, it is Low Level)
CAP Function mode (MEAS /barb4right 1101) 1 Ohm / Diode / Cont. 0 Ohm / Diode / Cont. / CAP MEA4 MEA3 MEA2 MEA1 Function mode 1 1 1 1 DC/AC Voltage (including DC mV mode) 1 1 0 1 Resistance/Diode /Cont./Capacitance 1 0 1 0 DC Voltage (no DC mV mode) 1 0 0 1 AC Voltage 1 0 1 1 DC mV mode 1 0 0 0 10A 1 1 1 0 mA 1 1 0 0 uA 0 1 1 1 Capacitance Mode 0 1 0 1 Hz/Duty 0 0 D1 D0 ADP 0 1 1 0 ADP * LCDC1 and LCDC2 can control LCD symbol. It shows as below in demo board: LCDC1 LCDC2 LCD Symbol 0 0 T1 1 0 hFE 0 1 ℃ 1 1 T2
17.2.8 SW2-DIP2: (If switch SW to ON, it is Low Level)
ADPC1 Function mode (MEAS /barb4right 0 0 D1 D0)
1 Pin = 1 Input (25m~250mV)
1 Pin = 0 Input (2mV~25mV)
ADPC2 Function mode (MEAS /barb4right 0 0 D1 D0)
2 Pin = 1 DC measurement
2 Pin = 0 AC measurement
17.2.9 SW3-DIP2: (If switch SW to ON, it is Low Level) ＊ Pin2 Don’t care
1 Pin Function
1 Pin = 1 RS232 mode off
1 Pin = 0 RS232 mode on
FORTUNE' Properties For Reference Only
Rev. 1.7 33/35 FS9721B/Q100 Measurement Mode Select: MEA4 MEA3 MEA2 MEA1 Mode Select (1/barb4right0/barb4right1) Hz/duty (1/barb4right0/barb4right1) 1 1 1 1 DC/AC Voltage (including DC mV mode) DC/AC Switch Hz/Duty/Voltage Switch 1 1 0 1 Resistance/Diode /Cont./Capacitance CAP=1: Resistance/Diode /Cont. CAP=0: Resistance/Diode /Cont./Capacitance 1 0 1 0 DC Voltage (no DC mV voltage mode) Hz/Duty/Voltage Switch 1 0 0 1 AC Voltage Hz/Duty/Voltage Switch 1 0 1 1 DC mV mode Hz/Duty/Current Switch 1 0 0 0 10A ＊4 AC/DC Switch Hz/ Duty/ Current Switch 1 1 1 0 mA ＊4 AC/DC Switch Hz/ Duty/ Current Switch 1 1 0 0 uA ＊4 AC/DC Switch Hz/ Duty/ Current Switch 0 1 1 1 Capacitance Mode 0 1 0 1 Hz/Duty Cycle ＊1 Hz/Duty 0 0 D1 D0 ADP ＊2 0 1 1 0 ADP ＊3 1. Hz and Duty Cycle measurements take ADP measuring path as input terminal. 2. ADP is single ADC positive input point. The range of measuring voltage is ±200mV. LCD decimal location is decided by D1 and D0. 11 means no decimal, 01 means 20.00, 10 means 200.0 and 00 means 2.000 that display with one unit. FORTUNE' Properties For Reference Only
Rev. 1.7 34/35 FS9721B/Q100 Measurement Mode and Jumper Setup: MEA4 MEA3 MEA2 MEA1 Mode Jumper Input 1 1 1 1 DC/AC Voltage (including DC mV mode) V/Diode/OHM/CAP , COM 1 1 0 1 Resistance/Diode /Cont./Capacitance J1,J3 V/Diode/OHM/CAP , COM 1 0 1 0 DC Voltage (no DC mV voltage mode) V/Diode/OHM/CAP , COM 1 0 0 1 AC Voltage J2 V/Diode/OHM/CAP , COM 1 0 1 1 DC mV mode J1 V/Diode/OHM/CAP , COM 1 0 0 0 10A ＊4 X ADP2, COM 1 1 1 0 mA ＊4 X ADP2, COM 1 1 0 0 uA ＊4 X ADP2, COM 0 1 1 1 Capacitance Mode J1,J3 V/Diode/OHM/CAP , COM 0 1 0 1 Hz/ Duty Cycle ＊1 J4,J6 ADP/ADP1,COM 0 0 D1 D0 ADP ＊2 J6 ADP/ADP1, COM 0 1 1 0 ADP ＊3 J6 ADP/ADP1, COM Product Number Description Package Type FS9721B Die form (78 pins) FS9721B 100-pin QFP (Not Pb free package) FS9721B-PCE Pb free package part number. 100-pin QFP (Pb free package) FORTUNE' Properties For Reference Only
Rev. 1.7 35/35 Ver. Date Page Description 1.3 2004/04/29 - 1. Change file name format from “FS9721B Data Sheet_V1.2.doc” to “FS9721B_DataSheet_V13.doc”. 2. Change page top and bottom space format. 3. Add CR-004 on the bottom space on the cover page. 4. Add ordering information. 1.4 2004/11/19 8 1. Revise the Diagram 3 78PIN Dice. 31 2. Add revision history on the last page of the data sheet. one. 31 1. Revise ordering information. Add Pb-free package part number. 1.6 2005/08/10 12,29 1. In the 10.3, LCDC1 and LCDC2=10 display COM2 and SEG14 (hFE). LCDC1 and LCDC2=01 display COM3 and SEG14 ( ).℃ 19 1. Delete diagram 11 “4.5V power supply “and diagram 12 “6.0V power supply”, and modify serial number after them. 24 1. Revise the Diagram 26 Current Measurement. DC/AC voltage .Correct MEAS=1011 DCmA mode for DCmV mode. 1.7 2014/05/22 2 Revised company address FORTUNE' Properties For Reference Only