AD8231

Rev. 0 | Page 8 of 20

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

PIN 1

INDICATOR

1

NC

2

(IN-AMP –IN) –INA

3

(IN-AMP +IN) +INA

4

NC

10 OUTA (IN-AMP OUT)

9REF

TOP VIEW

(Not to Scale)

AD8231

NC = NO CONNECT

Figure 2. 16-Lead LFCSP (Chip Scale)

Table 6. Pin Function Descriptions

Pin Number

Mnemonic

Description

1

NC

No Connect.

2

−INA

In-Amp Negative Input.

3

+INA

In-Amp Positive Input.

4

NC

No Connect.

5

SDN

Shutdown.

6

+INB

Op Amp Positive Input.

7

−INB

Op Amp Negative Input.

8

OUTB

Op Amp Output.

9

REF

In-Amp Reference Pin. It should be driven with a low impedance. Output is referred to

this pin.

10

OUTA

In-Amp Output.

11

Negative Power Supply. Connect to ground in single supply applications.

12

Positive Power Supply.

13

CS

Chip Select. Enables digital logic interface.

14

A0

Gain Setting Bit (LSB).

15

A1

Gain Setting Bit.

16

A2

Gain Setting Bit (MSB).