ES51977
3 3/4 AUTO EASY
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 function
•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 ES51977 is an integrated analog-
to-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
ES51977 also provides serial data output
function.
Expensive and bulky mechanical range
switches are not required. The other
functions are provided for data holding,
low battery detection, auto-power-off,
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 V-
V- to DGND
800mW
0℃ to 70℃
-25℃ to 125℃
1
92年8月4日
CYRUSTEK [ Cyrustek corporation ]
