AD8557

Data Sheet

Rev. D | Page 6 of 24

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

VSS

8

VOUT

7

VCLAMP

6

VPOS

5

AD8557

TOP VIEW

(Not to Scale)

Figure 2. 8-Lead SOIC Pin Configuration

NOTES

1. THE EXPOSED PAD SHOULD BE CONNECTED

TO AVSS (PIN 14) OR LEFT UNCONNECTED.

2. DNC = DO NOT CONNECT.

12

11

10

1

3

49

2

DNC

DIGOUT

DNC

DIGIN

VOUT

DNC

VCLAMP

DNC

AD8557

TOP VIEW

(Not to Scale)

Figure 3. 16-Lead LFCSP Pin Configuration

Table 5. Pin Function Descriptions

Pin No.

Mnemonic

Description

SOIC

LFCSP

1

Not applicable

VDD

Positive Supply Voltage.

2

2

DIGOUT

Digital Output. In read mode, this pin functions as a digital output.

3

4

DIGIN

Digital Input.

4

6

VNEG

Negative Amplifier Input (Inverting Input).

5

8

VPOS

Positive Amplifier Input (Noninverting Input).

6

10

VCLAMP

Set Clamp Voltage at Output.

7

12

VOUT

Amplifier Output.

8

Not applicable

VSS

Negative Supply Voltage.

Not applicable

13

DVSS

Negative Supply Voltage.

Not applicable

14

AVSS

Negative Supply Voltage.

Not applicable

15

DVDD

Positive Supply Voltage.

Not applicable

16

AVDD

Positive Supply Voltage.

Not applicable

1, 3, 5, 7, 9, 11

DNC

Do Not Connect. Do not connect to these pins.

Not applicable

0

EPAD

Exposed Pad. The exposed pad should be connected to AVSS (Pin 14) or left unconnected.