AD604

REV. 0

–4–

PIN DESCRIPTIONS

Pin No.

Mnemonic

Description

Pin 1

–DSX1

CH1 Negative Signal Input to DSX1.

Pin 2

+DSX1

CH1 Positive Signal Input to DSX1.

Pin 3

PAO1

CH1 Preamplifier Output.

Pin 4

FBK1

CH1 Preamplifier Feedback Pin.

Pin 5

PAI1

CH1 Preamplifier Positive Input.

Pin 6

COM1

CH1 Signal Ground; when connected to positive supply, Preamplifier1 will shut down.

Pin 7

COM2

CH2 Signal Ground; when connected to positive supply, Preamplifier2 will shut down.

Pin 8

PAI2

CH2 Preamplifier Positive Input.

Pin 9

FBK2

CH2 Preamplifier Feedback Pin.

Pin 10

PAO2

CH2 Preamplifier Output.

Pin 11

+DSX2

CH2 Positive Signal Input to DSX2.

Pin 12

–DSX2

CH2 Negative Signal Input to DSX2.

Pin 13

VGN2

CH2 Gain-Control Input and Power-Down Pin. If grounded, device is off,

otherwise positive voltage increases gain.

Pin 14

VOCM

Input to this pin defines common-mode of output at OUT1 and OUT2.

Pin 15

OUT2

CH2 Signal Output.

Pin 16

GND2

Ground.

Pin 17

VPOS

Positive Supply.

Pin 18

VNEG

Negative Supply.

Pin 19

VNEG

Negative Supply.

Pin 20

VPOS

Positive Supply.

Pin 21

GND1

Ground.

Pin 22

OUT1

CH1 Signal Output.

Pin 23

VREF

Input to this pin sets gain-scaling for both channels +2.5 V = 20 dB/V, +1.67 V = 30 dB/V.

Pin 24

VGN1

CH1 Gain-Control Input and Power-Down Pin. If grounded, device is off;

otherwise positive voltage increases gain.

PIN CONFIGURATION

–DSX1

+DSX1

PAI1

FBK1

PAO1

COM1

COM2

PAI2

FBK2

PAO2

+DSX2

–DSX2

VGN1

VREF

VPOS

GND1

OUT1

VNEG

VNEG

VPOS

GND2

OUT2

VOCM

VGN2

13

16

15

14

24

23

22

21

20

19

18

17

TOP VIEW

(Not to Scale)

12

11

10

9

8

1

2

3

4

7

6

5

AD604