ADN2872

Rev. 0 | Page 2 of 20

TABLE OF CONTENTS

Features .............................................................................................. 1

 

Applications....................................................................................... 1

 

General Description ......................................................................... 1

 

Applications Diagram ...................................................................... 1

 

Revision History ............................................................................... 2

 

Specifications..................................................................................... 3

 

SFP Timing Specifications........................................................... 4

 

Absolute Maximum Ratings............................................................ 5

 

ESD Caution.................................................................................. 5

 

Pin Configuration and Function Descriptions............................. 6

 

Typical Performance Characteristics ............................................. 7

 

Optical Waveforms ........................................................................... 9

 

Theory of Operation ...................................................................... 10

 

Dual-Loop Control..................................................................... 10

 

Control......................................................................................... 11

 

Voltage Setpoint Calibration..................................................... 11

 

Resistor Setpoint Calibration.................................................... 13

 

IMPD Monitoring .......................................................................... 13

 

Loop Bandwidth Selection........................................................ 14

 

Power Consumption .................................................................. 14

 

Automatic Laser Shutdown (Tx_Disable)............................... 14

 

Bias and Modulation Monitor Currents.................................. 14

 

IBIAS Pin ..................................................................................... 14

 

Data Inputs.................................................................................. 15

 

Laser Diode Interfacing............................................................. 15

 

Alarms.......................................................................................... 16

 

Outline Dimensions ....................................................................... 17

 

Ordering Guide .......................................................................... 17

 

REVISION HISTORY

3/09—Revision 0: Initial Version