Ver 2.9

2

10/06/25

ES51925

3000 Counts Smart DMM

Pin Assignment

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

Pin Description

Pin No

Symbol

Type

Description

1

AGND

P

Analog ground.

2

LBAT

I

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)

3

CREF+

I/O Positive connection for reference capacitor.

4

CREF-

I/O Negative connection for reference capacitor.

5

CINT

O

Integrator output. Connect to integral capacitor

6

CAZ

I

Auto-zero capacitor connection.

7

BUFF

O

Buffer output pin. Connect to integral resistor

8

RAZ

O

Buffer output pin in high-speed mode. Connect to high-speed integral

resistor.

9

IVSH

I

High current measurement input.

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

50

45

40

35

30

80

85

90

95

Cyrustek.

com.tw

ES51925

100