Analog Devices ADN2870ACPZ-RL7

PRODUCTION (Last Updated: 1month ago) Surface Mount ADN2870 EAR99 laser driver -40C~85C 100mA 30ps 4mm

Laser Driver DFB 3.3Gbps 1-CH 24-Pin LFCSP EP T/R

SPECIALTY INTERFACE CIRCUIT QCC24

3.3V DUAL-LOOP, 50 MEGA BITS/S T

IC LSR DRVR 3.3GPBS 3.6V 24LFCSP

The ADN2870 laser diode driver is designed for advanced SFP and SFF modules, using SFF-8472 digital diagnostics. The device features dual-loop control of the average power and extinction ratio, which automatically compensates for variations in laser characteristics over temperature and aging. The laser needs only to be calibrated at 25°C, eliminating the expensive and time consuming temperature calibration. The ADN2870 supports single-rate operation from 50 Mbps to 3.3 Gbps or multirate operation from 155 Mbps to 3.3 Gbps. Average power and extinction ratios can be set with reference voltages provided by a microcontroller DAC or by adjustable resistors. The ADN2870 provides bias and modulation current monitoring as well as fail alarms and automatic laser shutdown. The device interfaces easily with the ADuC702x family of MicroConverters® and with the ADN289x family of limiting amplifiers to make a complete SFP/SFF transceiver solution. An SFP reference design is available. The product is available in a space-saving 4 mm × 4 mm LFCSP specified over the -40°C to +85°C temperature range. Applications Multirate OC3 to OC48-FEC SFP/SFF modules 1×/2×/4× Fibre Channel SFP/SFF modules LX-4 modules DWDM/CWDM SFP modules 1GE SFP/SFF transceiver modules