ADN2872

Rev. 0 | Page 6 of 20

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

19

24

18

1

12

7

13

6

FAIL

IBMON

ERREF

IMMON

ERSET

VCC

CCBIAS

PAVSET

VCC

PAVREF

RPAV

GND

ADN2872

TOP VIEW

(Not to Scale)

NOTES

1. THE LFCSP PACKAGE HAS AN EXPOSED PADDLE THAT

MUST BE CONNECTED TO GROUND.

Figure 5. Pin Configuration

Table 4. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

CCBIAS

Control Output Current.

2

PAVSET

Average Optical Power Set Pin.

3

GND

Supply Ground.

4

VCC

Supply Voltage.

5

PAVREF

Reference Voltage Input for Average Optical Power Control.

6

RPAV

Average Power Resistor when Using PAVREF.

7

ERCAP

Extinction Ratio Loop Capacitor.

8

PAVCAP

Average Power Loop Capacitor.

9

GND

Supply Ground.

10

DATAP

Data, Positive Differential Input.

11

DATAN

Data, Negative Differential Input.

12

ALS

Automatic Laser Shutdown.

13

ERSET

Extinction Ratio Set Pin.

14

IMMON

Modulation Current Monitor Current Source.

15

ERREF

Reference Voltage Input for Extinction Ratio Control.

16

VCC

Supply Voltage.

17

IBMON

Bias Current Monitor Current Source.

18

FAIL

FAIL Alarm Output.

19

GND

Supply Ground.

20

VCC

Supply Voltage.

21

IMODP

Modulation Current Positive Output (Current Sink), Connect to Laser Diode.

22

IMODN

Modulation Current Negative Output (Current Sink).

23

GND

Supply Ground.

24

IBIAS

Laser Diode Bias (Current Sink to Ground).

25 (EPAD)

Exposed Paddle (EPAD)

The LFCSP package has an exposed paddle that must be connected to ground.