For information on Evaluation Boards, please contact the Fiber Optics Development Group. For an opportunity to receive a copy of the Applications Note: Detailed Applications and Design Information for ADI's SFP Reference Design, please contact the Fiber Optic IC Development Group.

The ADN2871 laser diode driver is designed for advanced SFP and SFF modules, using SFF-8472 digital diagnostics. The ADN2871 supports operation from 50 Mbps to 4.25 Gbps.

Average power and extinction ratio 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 part 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. ADuC70xx 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 pin-compatible with the ADN2870 dual-loop LDD, allowing one PC board layout to work with either device. For dual-loop 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

Data Sheet, Rev. A, 2/07

Part#	Data Rate (Gbps)	Voltage Supply (V)	Laser Bias Current (mA)	Single Ended/Differential	Modulation Current (mA)	Rise/Fall Time (ps)	Dual Loop	MSA Compliance	Package	Price* (1000-4999)
ADN2525	10.7	3.3	100	Differential	80	24	-	XFP, Xenpak, X2, MSA-300	3x3 mm LFCSP	$21.14
ADN2530	11.3	3.3	25	Differential	23	26	-	-	3x3 mm LFCSP	$15.49
ADN2830	-	5	200	Single Ended	-	-	-	-	5x5 mm LFCSP	$8.60
ADN2841	2.7	5	100	Both	80	80	X	SFF	5x5 mm LFCSP, 7x7 mm LFCSP	$17.15
ADN2847	3.3	3.3	100	Both	80	80	X	SFF	5x5 mm LFCSP, 7x7 mm LFCSP	$8.05
ADN2848	1.25	3.3	100	Both	80	80	X	SFF	5x5 mm LFCSP	$5.85
ADN2870	3.3	3.3	100	Both	90	60	X	SFP-SFF-8472	4x4 mm LFCSP	$5.31
ADN2871	4.25	3.3	100	Both	90	60	-	-	4x4 mm LFCSP	$4.30

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.

Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.