ES51932
22,000 Counts Auto DMM
123
124
125
126
127
128
SDO
C+
C-
V-
V-
O
O
O
P
P
I
RS232 compliant 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 3V battery negative terminal.
Negative supply voltage. Connecting to 3V battery negative terminal.
Low battery configuration. If 3V battery is used, connect it to AGND.
The default low-battery threshold voltage is –2.3V. If 9V battery is
Used, the low battery annunciator is displayed when the voltage of
this pin is less than VRH (-1.2V)
LBAT9
Absolute Maximum Ratings
Characteristic
Supply Voltage (V- to AGND)
Analog Input Voltage
V+
Rating
-4V
V- -0.6 to V+ +0.6
V+ ≥ (AGND/DGND+0.5V)
AGND/DGND
AGND/DGND ≥ (V- -0.5V)
V- -0.6 to DGND +0.6
500mW
Digital Input
Power Dissipation. Flat Package
Operating Temperature
Storage Temperature
0℃ to 70℃
-25℃ to 125℃
Electrical Characteristics
TA=25℃, V- = -3V
Parameter
Power supply
Operating supply current
In DCV mode
Symbol
V-
IDD
Test Condition
Min.
-3.5
—
Typ.
-3.0
2.0
2.5
—
Max
-2.5
2.5
5
Units
V
mA
Normal operation
In sleep mode
ISS
µA
—
±0.03 %F.S1
Voltage roll-over error
Voltage nonlinearity
REV 10MΩ input resistor
—
Best case straight
—
—
NLV
line
±0.03 %F.S
Input Leakage
Low battery flag voltage
Zero input reading
-10
-2.5
1
-2.3
000
10
-2.1
+000 counts
PA
V
V- to AGND
10MΩ input resistor -000
100KΩ resistor
Band-gap reference voltage
VREF between VRH and
-1.3
-1.2
-1.1
V
AGND
Peak to peak backplane
drive voltage
Counter time base period
-3.5V≤ V ≤-2.2V
3.0
3.1
1
3.2
V
fOSC = 4MHZ
—
—
sec
Between V- pin and
HOLD, RANGE,
KEY, FC1, FC2,
FC3, FC4, FC5,
BKLIT,MAXMIN
Between V- pin
and RS232
—
—
1.2
Internal pull-high to 0V
current
µA
V
—
—
—
—
11
Open circuit voltage for 220Ω
measurement
220Ω mode
-3.0
Ver. 1.2
5
10/05/27
CYRUSTEK [ Cyrustek corporation ]
