AD8376

Rev. A | Page 6 of 24

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

PIN 1

INDICATOR

1

A2

2

A3

3

A4

4

VCMA

NOTES

1. THE EXPOSED PAD IS INTERNALLY CONNECTED TO GROUND.

SOLDER TO A LOW IMPEDANCE GROUND PLANE.

5

VCMB

6

B4

7

B3

8

B2

24 OPA+

23 OPA–

22 ENBA

21 GNDA

20 GNDB

19 ENBB

18 OPB–

17 OPB+

AD8376

TOP VIEW

(Not to Scale)

Figure 3. 32-Lead LFCSP

Table 4. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

A2

MSB − 2 for the Gain Control Interface for Channel A.

2

A3

MSB − 1 for the Gain Control Interface for Channel A.

3

A4

MSB for the 5-Bit Gain Control Interface for Channel A.

4

VCMA

Channel A Input Common-Mode Voltage. Typically bypassed to ground through capacitor.

5

VCMB

Channel B Input Common-Mode Voltage. Typically bypassed to ground through capacitor.

6

B4

MSB for the 5-Bit Gain Control Interface for Channel B.

7

B3

MSB − 1 for the Gain Control Interface for Channel B.

8

B2

MSB − 2 for the Gain Control Interface for Channel B.

9

B1

LSB + 1 for the Gain Control Interface for Channel B.

10

B0

LSB for the Gain Control Interface for Channel B.

11

IPB+

Channel B Positive Input.

12

IPB−

Channel B Negative Input.

13, 20

GNDB

Device Common (DC Ground) for Channel B.

14

VCCB

Positive Supply Pin for Channel B. Should be bypassed to ground using suitable bypass capacitor.

15, 17

OPB+

Positive Output Pins (Open Collector) for Channel B. Require dc bias of +5 V nominal.

16, 18

OPB−

Negative Output Pins (Open Collector) for Channel B. Require dc bias of +5 V nominal.

19

ENBB

Power Enable Pin for Channel B. Channel B is enabled with a logic high and disabled with a logic low.

21, 28

GNDA

Device Common (DC Ground) for Channel A.

22

ENBA

Power Enable Pin for Channel A. Channel A is enabled with a logic high and disabled with a logic low.

23, 25

OPA−

Negative Output Pins (Open Collector) for Channel A. Require dc bias of +5 V nominal.

24, 26

OPA+

Positive Output Pins (Open Collector) for Channel A. Require dc bias of +5 V nominal.

27

VCCA

Positive Supply Pins for Channel A. Should be bypassed to ground using suitable bypass capacitor.

29

IPA−

Channel A Negative Input.

30

IPA+

Channel A Positive Input.

31

A0

LSB for the Gain Control Interface for Channel A.

32

A1

LSB + 1 for the Gain Control Interface for Channel A.

Exposed Pad

Internally connected to ground. Solder to a low impedance ground plane.