Document
ES51986
6000 Count AUTO DMM
.
Features
• 6000 count display • Full automatic measurement
*Voltage measurement *Current measurement *Resistor measurement • Capacitor measurement (Auto range: 6n to 6mF) • 60MHz Frequency counter • Range change function • Data hold function • MAX/MIN function • Diode measurement • ADP mode with external reference voltage • Serial data output (RS232 format) • Auto power off (10 mins) and re-power on • Low battery detect (3V and 9V) • 3V DC power supply • Back light function
Description
ES51986 is an integrated analog-to-digital
Converter(ADC) with 6000 counts LCD
display ,automatic range selection, and 3V
DC power supply. Automatic range
selection is provided for voltage(AC/DC)
measurement, resistor measurement,
current
measurement,
capacitor
measurement, frequency counter.
Expensive and bulky mechanical range
switches are not required. Other features
include data holding, MAX and MIN
holding, diode measurement, temperature
measurement, continuity checking, low
battery detection, auto- power off, re-
power on, and RS232 data output.
Application
Digital Multimeter
TAIWAN PATENT NO. 453443
1
03/10/09
Pin Assignment
ES51986
6000 Count AUTO DMM
HOLD RANGE SLACDC
KEY FC5 FC4 FC3 FC2 FC1 NC C+ CNC SDO LBAT9 VVDGND AGND AGND
NC V+ V+ NC CL+ CLCIL CAZL BUFL IVSH IVSL OVX OVH OVSG NC OR1 VR5 VR4 VR3 VR2 TEST5 ACVL ACVH NC ADI NC ADO NC VRH VR
100 1 10
20
30
90 40
80 MAXMIN BKOUT NC XTAL NC OSC1 OSC2 NC BUZOUT BUZIN
70 NC ANNUNC BP1 BP2 BP3 BP4 SEG01 SEG02 SEG03 SEG04
60 SEG05 SEG056 SEG07 SEG08 SEG09 SEG10 SEG11 SEG12 NC SEG13
50
SEG14 SEG15 SEG16 SEG17 BKLIT RS232 NC FREQ SLEEP CA+ CAR1K R9K VNBCAR VR1 SGND ADP VAVA+
2 03/10/09
ES51986
6000 Count 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 29 30 31
Symbol
NC V+ V+
NC
CL+ CLCIL CAZL BUFL IVSH IVSL OVX OVH OVSG NC OR1 VR5 VR4 VR3 VR2 TEST 5 ACVL ACVH NC ADI NC ADO NC VRH VR VA+
32 VA-
33 ADP 34 SGND 35 VR1 36 NC 37 VBAR
38 39 40 41 42 43 44 45 46 47~51
R9K R1K CACA+ SLEEP FREQ NC RS232 BKLIT
SEG17~SEG13
Type
P P
IO IO O O O I I I I I
O O O O O I/O O O
I
O
O I I
I G I
I
O O IO IO O I
I I O
Description
Positive supply voltage, output of on-chip DC-DC converter. Positive supply voltage, output of on-chip DC-DC converter.
High resolution positive connection for reference capacitor. High resolution negative connection for reference capacitor. High resolution integrator output. Connected to integral capacitor High resolution auto-zero capacitor connection. Integral resistor connection for high resolution buffer output High current measurement input. Low current measurement input Input high voltage for resistance measurement Output connection for resistance measurement Sense low voltage for resistance measurement
Reference resistor connection for 600.0Ω range Voltage measurement ÷10000 attenuator(6000V) Voltage measurement ÷1000 attenuator(600.0V) Voltage measurement ÷100 attenuat.