ADN2870 datasheet(2/20 Pages) AD

Part #	ADN2870

Description	3.3 V Dual-Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver

Download	20 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

Logo

2 / 20 page

ADN2870

Rev. 0 | Page 2 of 20

TABLE OF CONTENTS

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

SFP Timing Specifications............................................................... 5

Absolute Maximum Ratings............................................................ 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Operating Characteristics.................................................. 8

Optical Waveforms Showing Multirate Performance Using

Low Cost Fabry Perot Tosa NEC NX7315UA .......................... 8

Optical Waveforms Showing Dual-Loop Performance Over

Temperature Using DFB Tosa SUMITOMO SLT2486............ 8

Performance Characteristics....................................................... 9

Theory of Operation ...................................................................... 11

Dual-Loop Control .................................................................... 11

Control......................................................................................... 12

Voltage Setpoint Calibration..................................................... 12

Resistor Setpoint Calibration.................................................... 14

IMPD Monitoring ...................................................................... 14

Loop Bandwidth Selection ........................................................ 15

Power Consumption .................................................................. 15

Automatic Laser Shutdown (TX_Disable).............................. 15

Bias and Modulation Monitor Currents.................................. 15

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

Laser Diode Interfacing............................................................. 16

Alarms.......................................................................................... 17

Outline Dimensions ....................................................................... 18

Ordering Guide .......................................................................... 18

REVISION HISTORY

8/04—Revision 0: Initial Version

Similar Part No. - ADN2870

Manufacturer	Part #	Datasheet	Description
Analog Devices	ADN2870	705Kb / 20P	3.3 V Dual-Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver REV. A

Manufacturer	Part #	Datasheet	Description
Analog Devices	ADN2847	502Kb / 16P	3.3 V Dual-Loop 50 Mbps to 3.3 Gbps Laser Diode Driver REV. B
	ADN2872	588Kb / 20P	3.3 V Dual-Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver REV. 0
	ADN2870	705Kb / 20P	3.3 V Dual-Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver REV. A
	ADN2847	1Mb / 12P	3 V Dual-Loop 50 Mbps to 3.3 Gbps Laser Diode Driver REV. 0
	ADN2848	347Kb / 12P	3.3 V Dual-Loop 50 Mbps to 1.25 Gbps Laser Diode Driver REV. B
	ADN2871	768Kb / 20P	3.3 V, 50 Mbps to 4.25 Gbps, Single-Loop, Laser Diode Driver REV. A
	ADN2871	797Kb / 20P	3.3 V, 50 Mbps to 4.25 Gbps Single-Loop Laser Diode Driver REV. 0
	ADN2873	625Kb / 20P	3.3 V, 50 Mbps to 4.25 Gbps, Single-Loop, Laser Diode Driver REV. 0
	ADN2841	346Kb / 16P	Dual-Loop, 50 Mbps to 2.7 Gbps Laser Diode Driver REV. B
	ADN2848	254Kb / 12P	3 V Dual-Loop 50 Mbps to 1.25 Gbps Laser Diode Driver REV. 0