ADN2870

NOT RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. D) Product Selection Table

Part Models: 2
1ku List Price: price unavailable

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Overview

SFP/SFF MSA and SFF-8472 compliant
SFP reference design available
50 Mbps to 3.3 Gbps operation
Dual-loop control of average power and extinction ratio
Typical rise/fall time 60 ps
Bias current range 2 mA to 100 mA
Modulation current range 5 mA to 90 mA
Laser FAIL alarm and automatic laser shutdown (ALS)
Bias and modulation current monitoring
3.3 V operation
4 mm × 4 mm LFCSP
Voltage setpoint control
Resistor setpoint control
RoHS compliant

The ADN2870¹ 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

Part Models: 2
1ku List Price: price unavailable

Documentation

Data Sheet 1

ADN2870: 3.3 V Dual-Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver Data Sheet (Rev.D) 08/01/2005

Informational 1

SFP Chipset and Reference Design Simplify 4.25 GBPS Transceivers 12/30/2014

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADN2870ACPZ	24 ld LFCSP (4x4mm w/2.30mm EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADN2870ACPZ-RL7	24 ld LFCSP (4x4mm w/2.30mm EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 9, 2021 - 20_0126 Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
		PCN20_0126_Form Qualification Results Summary Material_Report Detailed Change Description Package Outline Drawing Package Outline Drawing Qualification Results Summary Qualification Results Summary Qualification Results Summary Qualification Results Summary
ADN2870ACPZ
ADN2870ACPZ-RL7
Sep 13, 2017 - 16_0077 CANCELLED: Conversion of Select 4x4, 5x5, 6x6 and 7x7mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE Korea.
		PCN16_0077_Form Material_Report Detailed Parts List Detailed Parts List Package Outline Drawing Detailed Change Description Qualification Results Summary
ADN2870ACPZ
ADN2870ACPZ-RL7
Jun 14, 2011 - 11_0109 Addition of STATSChipPAC, Malaysia as an Alternate Test Site for Select LFCSP products
		PCN11_0109_Form Material_Report
ADN2870ACPZ
ADN2870ACPZ-RL7