ES51925
3000 Counts Smart DMM
Pin Assignment
70
65
60
55
75
SEG12
SEG13
SEG14
SEG15
CLAMP
VON
AON
FA
FUA
FC3
FC2
FC1
HOLD
SEL
VAHZ
RANGE
NC
BKLIT
EFEN
BP1
BP2
BP3
BP4
ANNUNC
BKOUT
50
10
15
20
Pin Description
Pin No
1
2
Symbol
AGND
LBAT
3
4
5
6
7
8
9
Ver 2.9
CREF+
CREF-
CINT
CAZ
BUFF
RAZ
IVSH
AGND
LBAT
CREF+
CREF-
CINT
CAZ
BUFF
RAZ
IVSH
IVSL
OVX
OVH
OVSG
OR1
VR5
VR4
VR3
VR2
TEST5
ACVL
ACVH
ADI
ADO
OHMC4
OHMC3
Type
P
I
Description
Analog ground.
Low battery configuration. If 3V battery is used, connect it to DGND.
The default low-battery threshold voltage is –2.3V. If 9V battery is
used, the low battery enunciator is displayed when the voltage of
this pin is less than VRH (-1.2V)
Positive connection for reference capacitor.
Negative connection for reference capacitor.
Integrator output. Connect to integral capacitor
Auto-zero capacitor connection.
Buffer output pin. Connect to integral resistor
Buffer output pin in high-speed mode. Connect to high-speed integral
resistor.
High current measurement input.
2
10/06/25
I/O
I/O
O
I
O
O
I
25
5
SEG11
SEG10
NC
NC
SEG09
SEG08
SEG07
SEG06
SEG05
SEG04
SEG03
SEG02
SEG01
OSC2
OSC1
BKSEL
CESEL
C+
C-
V-
V-
V+
V+
DGND
AGND
80
45
85
Cyrustek.
com.tw
40
90
ES51925
35
95
30
100
NC
NC
NC
NC
NC
ACEN
BUZOUT
APOSEL
BUZIN
SLEEP
R1K
R9K-
CA+
CA-
NC
VR1
VA-
VA+
ADP
SGND
VR
VRH
NC
OHMC1
OHMC2