ES51960 3 3/4 Auto DMM Features: •Full Automatic measurement •3 3/4 digits display •Frequency measurement (400M HZ) •Rotary or push setting mode •Auto-power-off then hold the final data •Rotary or push re-power on function •Data hold, MAX or MIN hold, Relative data when this function is pressed •Low battery detect(3V & 9V) •On chip buzzer driver •Backlight function •3V DC power supply •External reference voltage for ADP measurement •Internal AC to DC conversion OP AMP If non_AC mode , OP will become unit gain buffer. •Serial Data Output (RS232 format) •LCD segment check •100 Pin flat-package Description: The ES51960 is an integrated analogto-digital converter (ADC)with 3 3/4 digits and 42-segment bargraph LCD display, automatic range, and 3V power supply. Automatic range selection is provided for voltage (AC/DC) measurement, ohm measurement, current ( uA and mA ) measurement, and frequency counter. The ES51960 also provides serial data output function. Expensive and bulky mechanical range switches are not required. The other functions are provided for MAX and MIN holding and current value display, data holding, Relative data and reference value display, low battery detection, auto-poweroff, diode measurement, continuity checking. Absolute Maximum Ratings Characteristics Supply Voltage (V- to AGND) Analog Input Voltage Digital Input Power Dissipation Flat Package Operating Temperature Storage Temperature Ratings -4V V+ to VV- to DGND 500mW 0℃ to 70℃ -25℃ to 125℃ ES51960 3 3/4 Auto DMM Electrical Characteristics TA=25℃,V- = -3V Symbol Parameter Test Condition VPower Supply Idd Operating Supply Current Normal Power On Iss Auto-power-off REV Rollover Error (Voltage) 10M input REB Rollover Error Resistor (Bargraph) NLV Nonlinearity Best Case (Voltage) Straight Line NLB Nonlinearity (Bargraph) Input Leakage Low Battery Flag Voltage V- to AGND Zero Input Reading 10MΩInput Resistor VREF Reference Voltage and 400Ω 100KΩ Between measurement VRH and AGND Peak to Peak Backplane Drive -3.2≦V-≦-2.2 Voltage Counter Time Base Period fosc=4MHz Open Circuit Voltage for Ω Ω and Continuity Measurement(except 400Ω) Function Pull High to 0V Resistance FC1,FC2,FC3,FC4 FC5,RANGE,HOLD MAX/MIN,BKLIT REL Pull High to 0V Resistance KEY, SET, BUZIN AC Frequency Response ± 1﹪Error (4V range) ± 5﹪Error TCRF Reference Voltage Temperature Coefficient 100KΩBetween VRH and AGND 0℃＜TA＜70℃ 2 Min. Typ. Max. Count -3.5 -3.0 -2.2 Volt 1.0 1.5 mA 5 10 uA - ± 0.1 ﹪F.S. - - ± 0.5 ﹪F.S. - - ± 0.1 ﹪F.S. - - ± 0.5 ﹪F.S. 1 10 pA -2.5 -2.3 -2.1 V -000 000 +000 Count -1.3 -1.2 -1.1 V 2.85 3.0 3.15 1 -0.5 -0.45 -0.4 V Sec V - 2.5 - MΩ - 250 40 to 500 40 to 2000 - KΩ HZ 50 - - - 92年8月4日 ppm/℃ ES51960 3 3/4 Auto DMM Pin Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Symbol V+ V+ CH+ CHCIH BUFH CAZH CL+ CLCIL CAZL BUFL IVSH IVSL OVX OVH OVSG OR1 VR5 VR4 VR3 VR2 TEST5 ACVL ACVH ADI ADO VA+ 29 30 31 32 33 34 35 36 37 VAADP SGND VR1 ADODC VR VRH ACVR BKLIT Description Positive supply voltage, output of on-chip DC-DC converter. Positive supply voltage, output of on-chip DC-DC converter. High speed positive connection for reference capacitor. High speed negative connection for reference capacitor. High speed integrator output. Connected to integration capacitor. Integration resistor connection for high speed buffer output. High speed auto-zero capacitor connection High resolution positive connection for reference capacitor. High resolution negative connection for reference capacitor. High resolution integrator output. Connected to integration capacitor. High resolution auto-zero capacitor connection. Integration resistor connection for high resolution buffer output. High level current measurement input. Low level current measurement input Input high voltage for resistance measurement. Output connection for resistance measurement. Sense low voltage for resistance measurement. Reference resistor connection for 399.9Ωrange. Voltage measurement ÷ 10000 attenuator (3999V). Voltage measurement ÷ 1000 attenuator (399.9V). Voltage measurement ÷ 100 attenuator (39.99V). Voltage measurement ÷ 10 attenuator (3.999V). Test pin 5. Negative output of AC to DC converter. Positive output of AC to DC converter. Negative input of internal AC to DC OP AMP. Output of internal AC to DC OP AMP. For ADP use. Deintegrating voltage input. The pin voltage should be more positive than VA- pin. For ADP use. Deintegrating voltage input. Adapted input for other application measurement. Signal ground. Measurement input . Optional pin. Reference input voltage connection. Typically -100 mV. Output of band-gap voltage reference. Typically -1.2 V. Optional pin. When connected to -3V,ACV without 400mV range. Back light function. Pulse low to set BKOUT pin output. 3 92年8月4日 ES51960 3 3/4 Auto DMM Pin. No Symbol. 38 SLEEP 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 Description When auto-power-off happen, this pin output will change from +3V to –3V. When re-power on happens, this pin output will change back to +3V. TEST1 Test pin 1. TEST2 Test pin 2 FREQ Frequency counter input, offset to 1/2(V-). SET Input to set serial data output. Pulse low to make this function active. F100 100 HZ square wave output. SEG24 LCD Segment line 24. SEG23 LCD Segment line 23. SEG22 LCD Segment line 22. SEG21 LCD Segment line 21 SEG20 LCD Segment line 20. SEG19 LCD Segment line 19. SEG18 LCD Segment line 18. SEG17 LCD Segment line 17. SEG16 LCD Segment line 16. SEG15 LCD Segment line 15. SEG14 LCD Segment line 14. SEG13 LCD Segment line 13. SEG12 LCD Segment line 12. SEG11 LCD Segment line 11. SEG10 LCD Segment line 10. SEG9 LCD Segment line 9. SEG8 LCD Segment line 8. SEG7 LCD Segment line 7. SEG6 LCD Segment line 6. SEG5 LCD Segment line 5. SEG4 LCD Segment line 4. SEG3 LCD Segment line 3. SEG2 LCD Segment line 2. SEG1 LCD Segment line 1. ANNUNC Square-wave output at the backplane frequency, synchronized to BP1. ANNUNC can be used to control display annunciator. Connecting an LCD segment to ANNUNC and turns it on; connecting an LCD segment to its backplane and turns it off. BP4 LCD Backplane 4. BP3 LCD Backplane 3. BP2 LCD Backplane 2. BP1 LCD Backplane 1. 4 92年8月4日 ES51960 3 3/4 Auto DMM Pin. No Symbol. 73 BUZIN 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Description. Buzzer control input. When Connected BUZIN to -3V turns the buzzer on.(2.0 KHZ continue signal) BUZOUT Buzzer output. Audio frequency (2.0KHz) output which drives a piezoelectric buzzer. PH1 Phase output 1,for capacitance measurement. PH2 Phase output 2,for capacitance measurement. PH3 Phase output 3,for capacitance measurement. PH4 Phase output 4,for capacitance measurement. OSC1 Crystal oscillator (input) connection. OSC2 Crystal oscillator (output) connection. BKOUT If BKLIT function is enabled , this pin output will change from -3V to +3V for 60 sec, once pressed BKLIT pin again within the 60 sec, this pin output will change back to –3V. KEY Mode change pin. REL Input to get relative display. Pulse low to make this function active. MAX/MIN Input to set MAX/MIN display. Pulse low to make this function active. HOLD Input to hold display. Pulse low to make this function active. RANGE Input to set automatic/manual mode and manual range selection. Pulse low to make this function active. FC5 Switch 5 for function selection. FC4 Switch 4 for function selection. FC3 Switch 3 for function selection. FC2 Switch 2 for function selection. FC1 Switch 1 for function selection. LBAT9 Low battery voltage setting. If used 3V battery, connected this pin to AGND, the default low battery voltage will be –2.3V. If used 9V battery, when the input voltage is small than VRH(-1.2V), the low battery annunciator will be display. SDO Serial data output. C+ Positive capacitor connection for on-chip DC-DC converter. CNegative capacitor connection for on-chip DC-DC converter. VNegative supply voltage. Connecting to battery negative terminal. VNegative supply voltage. Connecting to battery negative terminal. DGND Digital ground, connected to battery positive terminal. AGND Analog ground. AGND Analog ground. 5 92年8月4日 ES51960 3 3/4 Auto DMM Pin Configuration A G N D 100 V+ V+ CH+ CHCIH BUFH CAZH CL+ CLCIL CAZL BUF IVSH IVSL OVX OVH OVSG OR1 VR5 VR4 VR3 VR2 TEST5 ACVL ACVH ADI ADO VA+ VAADP A G N D R L A H B D S A F F F F F N O G N V V C C D T C C C C C G L D - - - + O 9 1 2 3 4 5 E D 95 100 90 M A X B / K M R K O I E E U N L Y T 85 80 5 75 10 70 15 65 20 60 25 55 35 30 S V A V V A B S G R D R R C K L H V L E N 1 O D R I E D C T P T E S T 1 40 45 T E S T 2 F S F S S R E 1 E E E T 0 G G 0 2 2 Q 4 3 6 50 S E G 2 2 S E G 2 1 S E G 2 0 S E G 1 9 OSC2 OSC1 PH4 PH3 PH2 PH1 BUZOUT BUZIN BP1 BP2 BP3 BP4 ANNUNC SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 S E G 1 8 92年8月4日 ES51960 3 3/4 Auto DMM Operation Mode (1) Measurement Description Voltage Measurement Resistive divider is automatically changed to provide in range reading for 399.9mV to 3999V full scale reading. The following table shows the various full scale range. Range VR1 VR2 VR3 VR4 VR5 Full scale 399.9 mV 3.999 V 39.99 V 399.9 V 3999 V Resistive Ratio 1 , 1/1 R2/(R1+R2) , 1/10 R3/(R1+R3) , 1/100 R4/(R1+R4) , 1/1000 R5/(R1+R5) , 1/10000 Resistance Measurement Resistive divider is automatically changed to provide the proper range. The following table shows the various full scale range. Range OR1 OR2 OR3 OR4 OR5 OR6 Full Scale 399.9 Ω 3.999 KΩ 39.99 KΩ 399.9 KΩ 3.999 MΩ 39.99 MΩ Reference Resistor R6(100Ω) R5(1KΩ) R4(10KΩ) R1||R3(=100KΩ) R1||R2(=1MΩ) R1(10MΩ) Current Measurement In the current measurement mode , there are three range selections : Mode Automatic Mode 1 Range Selection Full Scale uA 399.9 uA 3999 uA Automatic Mode 2 mA 39.99 mA 399.9 mA Manual Mode A 39.99 A When the mode changes among (uA, mA, A), the original AC/DC state will keep. 7 92年8月4日 ES51960 3 3/4 Auto DMM Continuity Check The continuity check is the same as the 399.9Ω range of the resistance measurement mode (manual mode). If the bargraph number <=3 , there will 2.0 KHz signal comes out from BUZOUT pin, if the bargraph number >=4, there will be no beep exist. Diode Measurement Use the DCV 3.999V range of voltage measurement mode (manual mode ). If the test circuit is open or the device (diode) under test is larger than 2V, the LCD display will show "OL", but the bargraph will show the real detected voltage. Frequency Counter The timebase of ES51960 is derived by a clock oscillator. The timebase of counter is : Tcounter = 4,000,000 Fosc Thus , the counter will operate with a 1 second timebase when a 4MHz oscillator is used. For accurate frequency measurement,a crystal oscillator is recommended. The frequency counter can automatically or manually select the proper range. Autorange operation extends over six decades from 1 Hz to 399.9MHz. Range FR1 FR2 FR3 FR4 FR5 FR6 Full Scale 3.999 KHZ 39.99 KHZ 399.9 KHZ 3.999 MHZ 39.99 MHZ 399.9 MHZ 8 92年8月4日 ES51960 3 3/4 Auto DMM uA mA uA 450 10A 45 uA 100K IVSL 14 mA 100K IVSH 13 4.5 10A 0.495 0.005 mA AGND Z1 6V Z2 V.A.R R6 R5 R4 R3 R2 R1 D2 2.2u 66M 2.2u 0.1u 15K 10K 15 100 OVH 16 OVSG 17 OR1 VR5 VR4 VR3 VR2 VR1 SGND 18 19 20 21 22 32 31 ADO 27 ADI 26 ACVH 25 24 23 100 1K 10K 101K 1.11M 10M 0.22u D1 100K OVX 1.5K PTC R 15K 100 AGND 10A ACVL TEST5 ES51960 INH OVSG INL 5K Analog Switch Selection Note : Light shielding for Z1, Z2, D1, D2. 9 92年8月4日 ES51960 3 3/4 Auto DMM (2) Switch Description Rotary mode : FC1,FC2,FC3,FC4,FC5 Measurement mode depends on the logic levels of FC1,FC2,FC3,FC4 FC5 and KEY : When FC5=1 FC1 FC2 FC3 FC4 Mode 1 1 0 0 DC V 1 1 1 0 DC uA 1 1 0 1 DC mA 1 1 1 1 DC A 0 1 1 1 Ω 0 1 1 0 Continuity 1 0 1 1 Ω 1 0 1 0 Frequency Push mode(KEY) DC V — AC V DC uA — AC uA DC mA — AC mA DC A — AC A Ω— Continuity Continuity — Diode Ω— Continuity — Diode When FC5=0, KEY is disabled. FC1 FC2 FC3 FC4 Mode 1 1 0 0 ACV 1 1 1 0 AC uA 1 1 0 1 AC mA 1 1 1 1 ACA 0 1 1 1 Ω 0 1 1 0 Continuity 1 0 1 1 Diode 1 0 1 0 Frequency Under ADP mode (1) FC5=1, when the input value is overflow, the buzzer will beep. (2) FC5=0, when the input value is overflow, the buzzer will not beep. FC1 FC2 FC3 FC4 Mode 0 1 0 1 ADP0 1 0 0 1 ADP1 0 0 1 1 ADP2 0 0 0 1 ADP3 0 1 0 0 ADP0(no bar) 1 0 0 0 ADP1(no bar) 0 0 1 0 ADP2(no bar) 0 0 0 0 ADP3(no bar) 10 92年8月4日 ES51960 3 3/4 Auto DMM Push mode MAX/MIN : 1 push < 1 sec RESET (AUTOMATIC) 1 push > 1 sec 1 push > 1 sec 1 push > 1 sec "Min" active min value "MAX" active max value "MAX MIN" blink current value 1 push <1 sec (1) If MAX/MIN function is enaled, REL function is disabled, or if REL function is enabled，MAX/MIN function is disabled. (2) The sequence order is MAX value, MIN value, Current value. REL : RESET (AUTOMATIC) 1 push <1 sec 1 push >1 sec 1 push >1 sec 1 push<1 sec "REL" active the relative value "REL" blink the Di(N) value * When REL function is enabled : Display = Di(N+K) - Di(N) , K = 0,1,2,3, ... Di(N) : Input reading when REL function active. Di(N+K) : Next K step input reading. * If the input value Di(N) or Di(N+K) ≧ (± 4000), the relative value will display “OL”. HOLD : RESET (Automatic) 1 push Data Hold (1) Under auto mode, press the HOLD function, the mode will change to manual mode and stay at the same scale range. (2) If HOLD function is enabled, MAX/MIN, REL function is disabled. but if MAX/MIN, REL function is pressed first, the HOLD function still can active. 11 92年8月4日 ES51960 3 3/4 Auto DMM (3) If continue to press the HOLD pin(logic low)then power on the ES51960, all the segments will blight until release the HOLD pin. Range : The mode selection of Auto-mode and Manual-mode is determined by RANGE pin. The following is the operating flow chart of Auto-mode and Manual-mode. 1 push < 1 sec Automatic Mode Manual Mode 1 push > 1 sec Range up 1 push < 1 sec * If HOLD, MAX/MIN, REL function is enabled，when RANGE function is pressed，the enabled function will be clear. * The bargraph is not affected by HOLD, MAX/MIN, REL function. Function Voltage (AC/DC) Auto R1－R5 Manual Ri → Ri+1 (R5→R1) A(AC/DC) Ω Fix R1－R6 Fix Ri → Ri+1 (R6→R1) Continuity Fix Fix Control Range 399.9mV ｜ 3999V 399.9uA ｜ 3999uA 39.99mA ｜ 399.9mA 39.99A 399.9Ω ｜ 39.99MΩ 399.9Ω uA(AC/DC) R1－R2 R1 → R2 R2 → R1 Diode Fix Fix 3.999V Frequency FR1－FR6 FRi→FRi+1 (FR6→FR1) 3.999KHZ ｜ 399.9MHZ NOTE mA(AC/DC) ADP0 ADP1 ADP2 ADP3 R1－R2 Fix R1 → R2 R2 → R1 Fix 12 Initial Range 399.9mV(DC) 3.999V (AC) 399.9uA 39.99mA 39.99A "OL" 399.9Ω "OL" 399.9Ω "OL" 3.999V 3.999KHZ XXXX XXX.X XX.XX X.XXX 92年8月4日 ES51960 3 3/4 Auto DMM Auto-Power-off function Once power on the ES51960, the auto-power-off function will be enabled and if the functions are not changed in 30 minutes, the auto-power-off condition will happen and SLEEP pin output will change from +3V to –3V. When poweroff happens, the final data is saved. If continue to press anyone of the pushed function (except HOLD pin)then power on the ES51960, the auto-power -off function will be disabled , and LCD segment "APO" will be turned off. BKLIT When this pin BKLIT is pushed, the BKOUT pin output will change from V- to V+ for 60 sec then returned to V- again, but if this pin is pushed again within 60 sec, this function will be canceled. SLEEP When auto-power-off happens, this pin output will change from V+ to V-, once re-power on happen, this pin output will change from V- to V+. (3) Buzzer The BUZZER turns on in the following condition : •1 beep : Measurement function changed ,power and re-power on , RANGE, HOLD, MAX/MIN, REL, SET, BKLIT or KEY are pushed. • 3.3 beeps : Input reading overrange. (except diode, ohm, continuity, frequency function used) • 2.0 KHZ continue: Continue check (Bargraph number<=3). • 2.0 KHZ continue 1.5 sec : Auto-power-off. BUZZER output waveform : 2.0 KHz ( continued ) 0.5 mS beeps (3.33 beeps/sec) 0.15 sec 0.3 sec 13 92年8月4日 ES51960 3 3/4 Auto DMM (4) Serial Data Output The serial data is output two times from SDO pin on each A/D conversion cycle.The data format satisfy JIS 7BIT transmission code and the baud rate is 2400,it means the receiver terminal can use RS-232 interface to read data . single package 0V -3V D0 ~D6 0 LSB p P 1 MSB A single package include a start bit(0),D0~D6(7 bit), a parity check bit(odd) and a stop bit(1). All the data stream is consist of 110× 2 bits. The high and low voltage levels correspond to DGND and V- respectively. SDO remains at 1 (high) when it is inactive. Hence the start bit (0) could be used as triggering signal to begin the reading process. all package p 1 0 0 range p 1 0 digit3 digit2 p 1 0 0 digit1 p 1 0 p 1 0 option1 status CR p 1 option2 p 1 0 0 p 1 function digit0 p 1 0 0 p 1 p 1 LF Digit0 ~ 3 data is exactly the receiver display number,but the status, function,range, option1,option2 data all need written program to judge what the data mean. Note : LSB bit is sent first,then MSB bit. The meter always outputs the current input value to the serial port in spite of HOLD mode. Each block is repeated twice in one conversion cycle. The detailed data format of each packet is listed below. 14 92年8月4日 ES51960 3 3/4 Auto DMM RANGE : Range 0110000 0110001 0110010 0110011 0110100 0110101 V 400mV 4V 40V 400V 4000V mA 40mA 400mA uA 400uA 4000uA Ohm 400 Ohm 4K Ohm 40K Ohm 400K Ohm 4M Ohm 40M Ohm Frequency 4K HZ 40K HZ 400K HZ 4M HZ 40M HZ 400M HZ Because Continuity,Diode, Current(A) and ADP measurement range are all fixed,so they are all the first code 0110000. DIGIT0 ~ 3 : Digit 0110000 0110001 0110010 0110011 0110100 0110101 0110110 0110111 0111000 0111001 Display data 0 1 2 3 4 5 6 7 8 9 If the input value is over-range(OL),the reading data DIGIT3=4,DIGIT2=0, DIGIT1=0,DIGIT0=0,but under the frequency mode,DIGIT0~3 output the measured value. FUNCTION : The definition code is not the same as FC1 ~ FC5. Function 0111111 0111110 0111101 0111100 0110111 0110110 Measurement mode A UA MA Voltage Ω Continuity 15 92年8月4日 ES51960 3 3/4 Auto DMM 0111011 Diode 0111010 Frequency 0110101 ADP0 0111001 ADP1 0110011 ADP2 0110001 ADP3 0110100 ADP0* 0111000 ADP1* 0110010 ADP2* 0110000 ADP3* *Under ADP* mode, the bargraph will not display STATUS : 0 BIT7 1 BIT6 1 BIT5 BIT4 BATT ACOL BIT3 BIT2 OL BIT1 － : "1" is for the negative(-). BATT : "1" is for the battery voltage is less than 2.3V± 0.2V. OL : "1" is for the input voltage over-range. ACOL : "1" is that the offset value of input signal is too large on the AC mode. OPTION1 : 0 BIT7 1 BIT6 1 BIT5 1 BIT6 1 BIT5 0 BIT4 0 BIT3 0 BIT2 0 BIT1 DC/AC AUTO MAN BIT4 BIT3 BIT2 APO BIT1 OPTION2 : 0 BIT7 DC/AC : "1" is for the DC mode and Ω, Diode, Continuity, ADP, Frequency Function, "0" is for the AC mode. AUTO : "1" is for auto range. MAN : "1" is for the manual range. APO : "1" is for the auto-power-off function enabled. CR(BACK) : Transmission code "0001101". LF(LINE FEED) : Transmission code "0001010". 16 92年8月4日 ES51960 3 3/4 Auto DMM TEST CIRCUIT 1 Voltage 4 Current AGND OVSG 100 1K 10K 101K 1.11M D2 1.0u D1 1.0u 0.47u VR2 88M ADI ACVH ACVL TEST5 15K 10K SGND 10A ADO 0.1u 15K AGND OR1 VR5 VR4 VR3 5K 0.005 10A 0.495 mA mA 4.5 45 mA V R 1 uA uA 100K uA 100K 450 V R 10M 5 Frequency -100mV F R E Q Voltage input 2 Resistor 200 2.2u OVX 100 Z1 6V Z2 1.5K PTC V- PTC 1.5K Fin OVH OVSG 100 6 ADP OR1 VR5 VR4 VR3 VR2 1K 10K 101K 1.11M VA+ VA- -100mV SGND AGND ADP 100K ADP SGND AGND 3 Diode AGND 100 Z1 6V Z2 OVH 7 Low battery PTC 1.5K 9V VR1 BAT TER Y 10M 1.11M ES51960 VR2 680K LBAT9 0.1u 270K AGND V- 0V OVSG 17 92年8月4日 IVSH IVSL ES51960 3 3/4 Auto DMM APPLICATION CIRCUIT 7.5V ZI 5.6V ZI 3V 0.1u 10u + 0.1u + 10u 0.01u 0.022u 200K 0.047u uA 450 0.1u 0.22u 0.47u uA mA uA 45 100K 0.495 m A 100K 4.5 10A 200K mA 0.005 10A AGND 100K 100 1.5K R -3V 0.1u A A D V V C C S L F F F F F R H M R K B O SC 2 V+ G G G - - - + D B C C C C C A O A E E K V+ O A 1 2 3 4 5 N L X L Y O O SC 1 N N N CH+ D D D U PH 4 T G D / CHM T PH 3 9 E C IH I PH 2 B U FH N C A ZH PH 1 C L+ C LB U ZO U T C IL BU ZIN C A ZL B P1 B U FL B P2 4M HZ IV SL L C D IV SH OVX 0.1u OVH D I S P L A Y PTC O V SG 100 1K 10K Z1 6V 101K 1.11M D1 22K 15K D2 0. 47u 66M 0. 22u 88M 2.2u 1u 0.1u 2.2u 1u 22K 15K 10K 5K ADP 100K O R1 V R5 V R4 V R3 V R2 ADO ADI ACVH ACVL TEST5 VA+ VAADP -3V A S D G V O V N R D V R D 1 C R H 10M A C V R B K L I T 91k 10k + 1u C 1815 N PN S L E E P S E S G E 2 T 4 F R E Q 200 2.2u S E G 2 3 4.7n PTC 1.5K -3 V -3 V Note: In order to prevent IC from damaging by inappropriate operation, the Zener diodes MUST be required as protection. 18 92年8月4日 ES51960 3 3/4 Auto DMM The Other (1) LCD pin assignment BP1 BP2 BP3 BP4 SEG1 SEG2 SEG3 SEG4 SEG5 RS232 bar2 bar4 bar6 bar8 Bar0 bar1 bar3 bar5 bar7 BarAUTO MANU e3 － DC BATT f3 AC AP0 SEG6 bar9 d3 g3 a3 BP1 BP2 BP3 BP4 SEG8 bar13 bar12 p3 REL SEG13 SEG14 bar22 bar24 bar21 bar23 p2 e1 MAX f1 BP1 BP2 BP3 BP4 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 bar25 bar27 bar29 bar31 bar32 bar34 bar36 d1 bar26 bar28 bar30 d0 bar33 bar35 g1 c1 p1 e0 g0 c0 M a1 b1 MIN f0 a0 b0 u BP1 BP2 BP3 BP4 SEG9 SEG10 SEG11 bar15 bar16 bar18 bar14 d2 bar17 e2 g2 c2 f2 a2 b2 SEG12 bar20 bar19 px HOLD SEG7 bar11 bar10 c3 b3 SEG22 SEG23 SEG24 bar38 bar40 HZ bar37 bar39 Ω K V A m NOTE : 1 : "bar0" is normally ON. 2 : "p1" is always ON when ADP1 function is used. 3 : "p2" is always ON when ADP2 function is used. 4 : "p3" is always ON when ADP3 function is used. 5 : "px" is always OFF(not used). 6 : "RS232" is always ON when SDO function is enabled(option). 19 92年8月4日 ES51960 3 3/4 Auto DMM BATT APO REL HOLD MAX MIN RS232 DC AC umVA MKΩHZ AUTO MANU LCD Display Panel Backplane Waveform (Frequency = 62.5 HZ) (V-)+3V ANNUNC V(V-)+3V BP1 V(V-)+3V BP2 V(V-)+3V BP3 V(V-)+3V BP4 V- 20 92年8月4日 ES51960 3 3/4 Auto DMM (2) LCD Display ON Condition LCD Annunciator "BATT" "DC" "AC" "-" "AUTO" "MANU" "REL" "HOLD" "MAX" "MIN" " "＆"Ω" " "＆"V" "mV" "umA" "MKΩ" "MKHZ" "APO" "RS232" Bargraph Low battery is detected. DC voltage and DC current functions are used. AC voltage and AC current functions are used. DC voltage and current function. Automatic mode is used. Manual mode is used. REL function is used. HOLD function is used. MAX function is used. MIN function is used. Continuity-check is used. Diode measurement is used. AC/DC voltage function is used. AC/DC current function is used. Ω measurement function is used. Frequency counter is used. Auto-power-off function is used. Serial data output is used. Bargraph annunciator is only depend on input reading . 21 92年8月4日 ES51960 3 3/4 Auto DMM (3) DC offset value at the ACV Generally when we measure an ac voltage,it may be biased upon a dc level.Once the offset voltage is too large,the measurement data will not be true. There is one method can remind user to notice this condition.Connecting ADODC (pin 33) to -3V,when the above condition happens,the LCD symbol "dc" will blink and the data display will be "OL",then user can press RANGE pin to enter to the next range and get the correct value.If this function is enabled ,user also can read this condition from the RS232 output form(status). (4) PH1,PH2,PH3,PH4 four phase output PH1 32ms PH2 PH3 PH4 128ms (5) High Resolution and High Speed(Bargraph) time Mode ZI AZ INT DEINT High Current(I) Measurement 100m sec 150m sec 100m sec 200m sec Resolution High Speed Other Measurement Current(I) Other Measurement (V,R) Measurement (V,R) 100m sec 10m sec 10m sec 150m sec 15m sec 15m sec 100m sec 10m sec 10m sec 400m sec 20m sec 40m sec 22 92年8月4日 ES51960 3 3/4 Auto DMM Package 1 100 Pin QFP Package W A L b a θ B 2 D C d Dimension Paramenters Symbol W L A B C d a D θ Min. Milimeter Typ. Max. Min. 19.90 20.00 20.10 783.5 13.90 14.00 14.10 547.2 0.425 0.20 0.30 0.40 7.9 0.65 1.05 1.20 1.35 41.3 2.57 2.72 2.87 101.2 2.50 o 0 10o 23 Mill Typ. 787.4 551.2 16.7 11.8 25.6 47.2 107.1 98.4 Max. 791.3 551.2 11.8 47.2 107.1 92年8月4日