ADN2870
NOT RECOMMENDED FOR NEW DESIGNS3.3 V, Dual Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver
- Part Models
- 2
- 1ku List Price
- price unavailable
Part Details
- 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
Documentation
Data Sheet 1
Informational 1
Circuit Note 1
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-Lead LFCSP (4mm x 5mm w/ EP) | ||
| ADN2870ACPZ-RL7 | 24-Lead LFCSP (4mm x 5mm w/ EP) |
| 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 |
||
| 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. |
||
| ADN2870ACPZ | ||
| ADN2870ACPZ-RL7 | ||
|
Jun 14, 2011 - 11_0109 Addition of STATSChipPAC, Malaysia as an Alternate Test Site for Select LFCSP products |
||
| ADN2870ACPZ | ||
| ADN2870ACPZ-RL7 | ||
This is the most up-to-date revision of the Data Sheet.
Evaluation Kits
ADN2870 Evaluation Board