ADN2871 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADN2871
Manufacturer

ADI
ChipWorker Part#

CW430788855
Description

3.3V, 50Mbps to 3.3Gbps Single-Loop Laser Diode Driver
Documentation

Datasheet

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ADN2871 Specifications

Attribute	Attribute Value

Part Number	ADN2871
Manufacturer	ADI
ChipWorker Part#	CW430788855
Documentation	Datasheet
	expand all
Product Lifecycle Status	Active

Product Description

Product Details
The ADN2871 laser diode driver (LDD) is designed for advanced SFP and SFF modules, using SFF-8472 digital diagnostics. The ADN2871 supports operation from 50 Mbps up to 4.25 Gbps.
Average power and extinction ratios can be set with a voltage provided by a microcontroller DAC or by a trimmable resistor or digital potentiometer. The average power control loop is implemented using feedback from a monitor photodiode. The device provides bias and modulation current monitoring, as well as fail alarms and automatic laser shutdown (ALS). The device interfaces easily with the Analog Devices, Inc., ADuC7019 and ADuC7020 family of MicroConverter® devices and with the ADN2890, ADN2891, and ADN2892 family of limiting amplifiers to make a complete SFP/SFF transceiver solution. An SFP reference design is available.
The product is pin-compatible with the ADN2870 dual-loop LDD, allowing the same design to work with either device. For dual-loop control applications, refer to the ADN2870 data sheet. The product is available in a space-saving 4 mm × 4 mm LFCSP specified over the −40°C to +85°C temperature range.
**Applications**
1×/2×/4× Fibre Channel SFP/SFF modules
Multirate OC3 to OC48-FEC SFP/SFF modules
LX-4 modules
DWDM/CWDM SFP modules
1GE SFP/SFF transceiver modules
VCSEL, DFB, and FP transmitters
### Features and Benefits
SFP/SFF and SFF-8472 MSA-compliant
SFP reference design available
50 Mbps to 4.25 Gbps operation
Automatic average power control
Typical 60 ps rise/fall time
VCSEL, DFB, and FP laser support
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 supply
4 mm × 4 mm LFCSP
Voltage setpoint control
Resistor setpoint control
Pin-compatible with ADN2870

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