View ES51988_4681865.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

ES51988
3 3/4 AUTO REL/MAX/MIN
Features:
*Full Automatic measurement *3 3/4 digits display *Frequency measurement (40M HZ) *Rotary or push setting mode *Auto-power-off then hold the final data *Rotary or push re-power on function *Data hold, MAX/MIN hold, Relative data when this function is pressed *Low battery detect (3V & 9V) *On chip buzzer driver *3V DC power supply *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 ES51988 is an integrated analogto-digital converter (ADC)with 3 3/4 digits and 42-segment bargraph LCD display, automatic range, and 3V battery power supply. Automatic range selection is provided for voltage (AC/DC) measurement, ohm measurement, current(uA and mA) measurement,and frequency counter. The ES51988 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
1
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
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 10MInput Resistor VREF Reference Voltage and 400 100K Between measurement VRH and AGND Peak to Peak Backplane Drive -3.2V--2.2 Voltage Counter Time Base Period fosc=4MHz Open Circuit Voltage for and Continuity Measurement(except 400) Function Pull High to 0V Resistance FC1,FC2,FC3,FC4 FC5,RANGE,HOLD, MAX/MIN,REL Pull High to 0V Resistance KEY, SET AC Frequency Response 0.5Error (4V range) 2.5Error TCRF Reference Voltage Temperature Coefficient 100KBetween VRH and AGND 0TA70 Min. Typ. Max. Count -3.5 -3.0 -2.2 Volt 1.0 1.5 mA 0.1 5 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 V Sec V M K HZ
1 -0.5 -0.45 -0.4 2.5 250 40 to 500 40 to 2000 50 -
ppm/
2
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
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 29 30 31 32 33 34 35 36 37 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 NC NC NC SGND VR1 NC VR VRH ACVR NC 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 399.9range. 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.
Signal ground. Unknown voltage input . 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.
3
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
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 TEST1 NC FREQ SET F100 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 ANNUNC 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. Test pin 1. Frequency counter input, offset to 1/2(V-). Input to set serial data output. Pulse low to make this function active. 100 HZ square wave output. LCD Segment line 24. LCD Segment line 23. LCD Segment line 22. LCD Segment line 21 LCD Segment line 20. LCD Segment line 19. LCD Segment line 18. LCD Segment line 17. LCD Segment line 16. LCD Segment line 15. LCD Segment line 14. LCD Segment line 13. LCD Segment line 12. LCD Segment line 11. LCD Segment line 10. LCD Segment line 9. LCD Segment line 8. LCD Segment line 7. LCD Segment line 6. LCD Segment line 5. LCD Segment line 4. LCD Segment line 3. LCD Segment line 2. LCD Segment line 1. 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. LCD Backplane 4. LCD Backplane 3. LCD Backplane 2. LCD Backplane 1.
69 70 71 72
BP4 BP3 BP2 BP1
4
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
Pin. No Symbol. 73 NC 74 BUZOUT 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 NC NC NC NC OSC1 OSC2 NC KEY REL MAX/MIN HOLD RANGE FC5 FC4 FC3 FC2 FC1 LBAT9 Description. Buzzer output. Audio frequency (2.0KHz) output which drives a piezoelectric buzzer.
Crystal oscillator (input) connection. Crystal oscillator (output) connection. Mode change pin. Input to get relative display. Pulse low to make this function active. Input to set MAX/MIN display. Pulse low to make this function active. Input to hold display. Pulse low to make this function active. Input to set automatic/manual mode and manual range selection. Pulse low to make this function active. Switch 5 for function selection. Switch 4 for function selection. Switch 3 for function selection. Switch 2 for function selection. Switch 1 for function selection. 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. Serial data output. Positive capacitor connection for on-chip DC-DC converter. Negative capacitor connection for on-chip DC-DC converter. Negative supply voltage.Connecting to battery negative terminal. Negative supply voltage.Connecting to battery negative terminal. Digital ground,connected to battery positive terminal. Analog ground. Analog ground.
93 94 95 96 97 98 99 100
SDO C+ CVVDGND AGND AGND
5
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
Pin Configuration
M A X / MRK I EE N NLY C
A G N D 100 V+ V+ CH+ CHCIH BUFH CAZH CL+ CL-
A G N D
D S G N V V C CD D- - - +O 95
L R A B AF F F F F N TC C C CC G 91 2 3 45 E 90
H O L D
85
80
5
75
CIL CZAL BUFL IVSH IVSL OVX OVH OVSG OR1 VR5 VR4 VR3 VR2 TEST5 ACVL ACVH ADI ADO NC NC NC
10
70
15
65
20
60
25
55
30
35
40
45
50 S E G 2 2 S E G 2 1 S E G 2 0 S E G 1 9 S E G 1 8
OSC2 OSC1 NC NC NC NC BUZOUT NC BP1 BP2 BP3 BP4 ANNUNC SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17
S VNVVA GRCRRC N1 HV D R
NS TNF S F CLECRE1 ET0 ES Q 0 ET P1
S E G 2 4
S E G 2 3
6
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
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 Current Measurement In the current measurement mode , there are three range selections : 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. Mode Automatic Mode 1 Full Scale 399.9 3.999 K 39.99 K 399.9 K 3.999 M 39.99 M Reference Resistor R6(100) R5(1K) R4(10K) R1||R3(=100K) R1||R2(=1M) R1(10M)
7
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
Continuity Check The continuity check is the same as the 399.9 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 ES51988 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 five decades from 1 Hz to 39.99MHz. Range FR1 FR2 FR3 FR4 FR5 Full Scale 3.999 KHZ 39.99 KHZ 399.9 KHZ 3.999 MHZ 39.99 MHZ
8
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
uA
mA
450 10A 45
uA uA 100K IVSL 14 100K IVSH 13
mA 4.5
10A 0.495 0.005 AGND
mA 10A AGND
100
100K OVX 100 OVH R
15
16
1.5K PTC Z1 6V Z2 R6 R5 R4 R3 R2 R1 100 1K 10K 101K 1.11M 10M
OVSG
17
18 19 20 21 22 32 31
V.A.R
OR1 VR5 VR4 VR3 VR2 VR1 SGND
ES51988
0.22u D1 15K D2 2.2u
ADO 27
66M
2.2u 0.1u
ADI
ACVH ACVL TEST5
26 25 24 23 INH
10K 5K
15K
OVSG
INL
Analog Switch Selection
Note : Light shielding for Z1, Z2, D1, D2.
9
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
(2) Switch Description Rotary mode : FC1,FC2,FC3,FC4,FC5 Measurement mode are depend 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 0 1 1 0 Continuity 1 0 1 1 1 0 1 0 Frequency 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 0 1 1 0 Continuity 1 0 1 1 Diode 1 0 1 0 Frequency Push mode(KEY) DC V -- AC V DC uA -- AC uA DC mA -- AC mA DC A -- AC A -- Continuity Continuity -- Diode -- Continuity -- Diode
10
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
Push mode 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 1 push > 1 sec 1 push < 1 sec Manual Mode Range up
* If HOLD, MAX/MIN, REL function is enabledwhen RANGE function is pressedthe enabled function will be clear. * The bargraph is not affected by HOLD, MAX/MIN, REL function. Function Voltage (AC/DC) uA(AC/DC) Auto R1R5 Manual Ri Ri+1 (R5R1) R1 R2 R2 R1 R1 R2 R2 R1 Fix Ri Ri+1 (R6R1) Fix Fix FRiFRi+1 (FR5FR1) Control Range 399.9mV 3999V 399.9uA 3999uA 39.99mA 399.9mA 39.99A 399.9 39.99M 399.9 3.999V 3.999KHZ 39.99MHZ Initial Range 399.9mV(DC) 3.999V (AC)
R1R2
399.9uA
mA(AC/DC)
R1R2
39.99mA 39.99A "OL" 399.9 "OL" 399.9 "OL" 3.999V 3.999KHZ
A(AC/DC)
Fix R1R6
Continuity Diode Frequency
Fix Fix FR1FR5
11
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
HOLD :
1 push
RESET (Automatic)
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. (3) If continue to press the HOLD pin(logic low)then power on the ES51988 , all the segments will blight until release the HOLD pin. MAX/MIN :
1 push < 1 sec RESET (AUTOMATIC) 1 push > 1 sec
1 push > 1 sec "MAX" active max value
1 push > 1 sec "Min" active min value 1 push <1 sec "MAX MIN" blink current value
(1) If MAX/MIN function is enaled, REL function is disabled, or if REL function is enabledMAX/MIN function is disabled. (2) The sequent order is MAX value, MIN value, Current value. REL :
RESET (AUTOMATIC)
1 push <1 sec 1 push >1 sec 1 push<1 sec "REL" active the relative value "REL" blink the Di(N) value
1 push >1 sec
* 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".
12
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
Auto-Power-off function: Once power on the ES51988, the auto-power-off function will be enabled and if the functions are not changed in 30 minutes, the auto-power-off condition will be happened and SLEEP pin output will change from +3V to -3V. When power-off happens, the final data is saved. If continue to press anyone of the pushed function (except HOLD pin)then power on the ES51988, the auto-power -off function will be disabled , and LCD segment "APO" will be turned off. (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 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
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
(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
0
LSB
D0 ~D6
p1 P
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 110x 2 bits. The high and low voltage levels correspond to DGND and V- respectively. SDO remains at 1 (high) when it is inacetive. Hence the start bit(0) could be used as the triggering signal to begin the reading process. all package
0 range 0 digit1 0 status
p10 digit3 p10 digit0 p10 option1
p10 digit2 p10 function p10 option2
p1
p1
p1
0 CR
p10 LF
p1
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
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
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
Because Continuity,Diode, and Current(A) 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 ~ FC4. Function 0111111 0111110 0111101 0111100 0110111 0110110 0111011 0111010 Measurement mode A uA mA Voltage Continuity Diode Frequency
15
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
STATUS : 0 BIT7 1 BIT6 1 BIT5 BIT4 BATT BIT3 0 BIT2 OL BIT1
: "1" is for the negative(-). BATT : "1" is for the battery voltage is less than 2.3V OL : "1" is for the input voltage over-range. OPTION1 : 0 BIT7 OPTION2 : 0 BIT7 1 BIT6 1 BIT5 DC/AC AUTO MAN BIT4 BIT3 BIT2 APO BIT1 1 BIT6 1 BIT5 0 BIT4 0 BIT3 0 BIT2 0 BIT1
0.2V.
DC/AC : "1" is for the DC mode and , 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
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
TEST CIRCUIT
1 Voltage
AGND OVSG 100 1K 10K 101K 1.11M OR1 VR5 VR4 VR3 AGND SGND 0.005 10A 0.495 4.5 45 mA V R 1 uA V R 450
4 Current
VR2
ADO
10A mA mA uA uA
100K
D1
15K
D2 1.0u
1.0u
0.47u 0.1u
88M
10K
15K
ADI ACVH ACVL TEST5
100K
IVSH IVSL
5K
10M -100mV Voltage
2 Resistor
OVX 1.5K
100
5 Frequency
F R E Q 200 2.2u PTC VFin 1.5K
PTC
Z1 6V Z2
OVH OVSG 100 1K 10K 101K 1.11M OR1 VR5 VR4 VR3
VR2
SGND AGND
3 Diode
100
6 Low battery
AGND OVH
9V
BA TT ER Y
ES51988 680K LBAT9 0.1u 270K
AGND V-
Z1 6V Z2
PTC 1.5K 10M 1.11M
VR1
VR2 OVSG
0V
17
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
APPLICATION CIRCUIT
7. ZI 5V 5. ZI 6V 0. 1u + 10u AGN D 0. 01u 0. 022u
10A 200K
3V 10u + 0. 1u A G N D A G N D 0. 1u
FFFFFRH CCCCCAO 12345NL GD E MRK AEE XLY / M I N
-3V
4M HZ
V+ V+
CH+ CHC IH
D VVCCS L G ---+D B OA N T D 9
O SC 2
O SC 1
0. 047u 0. 005 0. 495 4. 5 45
10A mA mA uA
B U FH
0. 1u 0. 22u 0. 47u 200K
100K 100K
C A ZH C L+ C LC IL C ZA L
B U ZO U T
-3V 5. ZI 6V
B U FL
IV S H IV S L
B P1
B P2 L C D D I S P L A Y
mA
uA uA 450
1. 5K
1u 100K 0. OVX 100
OVH O V SG
R
PTC Z1 6V
1K 10K
100
101K 1. 11M
D1
O R1 V R5 V R4 V R3 V R2 ADO
D2 1. 0u
1. 0u 22K
0. 47u 0. 1u
88M
ADI
22K 10K
5K
A CV H
ACVL TE ST 5
S GV NR D1 10M
10k
V VR RH
S L E E P 91k
F R E Q 200 2. 2u PTC 4. 7n 1. 5K
S E SG E2 T4
S E G 2 3
+ 1u
C 1815 N PN
3V Fi n 3V
Note: In order to prevent IC from damaging by inappropriate operation, the Zener diodes MUST be required as protection.
18
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
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 SEG8 bar13 bar12 p3 REL SEG9 SEG10 SEG11 bar15 bar16 bar18 bar14 d2 bar17 e2 g2 c2 f2 a2 b2 SEG12 bar20 bar19 px HOLD SEG6 bar9 d3 g3 a3 SEG7 bar11 bar10 c3 b3
BP1 BP2 BP3 BP4
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 SEG22 SEG23 SEG24 bar38 bar40 HZ bar37 bar39 K V A m
BP1 BP2 BP3 BP4
NOTE :
1 : "bar0" is normally ON. 2 : "px" is always OFF(not used).
19
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
BATT APO DC AC AUTO MANU REL HOLD MAX MIN
RS232
umVA MKHZ
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
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
(2) LCD Display ON Condition LCD Annunciator "BATT" "DC" "AC" "-" "AUTO" "MANU" "REL" "HOLD" "MAX" "MIN" " """ " ""V" "mV" "umA" "MK" "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. 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 .
(3) .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
21
9284
ES51988
3 3/4 AUTO REL/MAX/MIN
Package
1
100 Pin QFP Package
W A
L
b
a
B C D
d
2
Dimension Paramenters
Symbol W L A B C d a D
Min.
Milimeter Typ. Max.
Min.
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
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
22
9284

▲Up To Search▲

Price & Availability of ES51988

	To Download ES51988 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .