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ADN2870

Features: SFP/SFF and SFF-8472 MSA-compliant SFP reference design available 50 Mbps to 3.3 Gbps operation Multirate 155 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...

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SeekIC No. : 004276223 Detail

ADN2870: Features: SFP/SFF and SFF-8472 MSA-compliant SFP reference design available 50 Mbps to 3.3 Gbps operation Multirate 155 Mbps to 3.3 Gbps operation Dual-loop control of average power and extinction r...

ADN2870 Data Sheet

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Part Number:
ADN2870
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

SFP/SFF and SFF-8472 MSA-compliant
SFP reference design available
50 Mbps to 3.3 Gbps operation
Multirate 155 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 package
Voltage setpoint control
Resistor setpoint control




Application

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




Pinout

ADN2870 Diagram

Connection Diagram




Specifications

Data Rate (Gbps) 3.3
Voltage Supply (V) 3.3V
Single Ended/Differential Both
Package 4x4 mm LFCSP
Modulation Current (mA) 90mA
Laser Bias Current (mA) 100mA
Rise/Fall Time (ps) 60ps
Dual Loop X
MSA Compliance SFP-SFF-8472


Parameter Rating
VCC to GND 4. 2 V
IMODN, IMODP 0.3 V to +4.8 V
PAVCAP 0.3 V to +3.9 V
ERCAP 0.3 V to +3.9 V
PAVSET 0.3 V to +3.9 V
PAVREF 0.3 V to +3.9 V
ERREF 0.3 V to +3.9 V
IBIAS 0.3 V to +3.9 V
IBMON 0.3 V to +3.9 V
IMMON 0.3 V to +3.9 V
ALS 0.3 V to +3.9 V
CCBIAS0.3 V to +3.9 V
RPAV 0.3 V to +3.9 V
ERSET0.3 V to +3.9 V
FAIL 0.3 V to +3.9 V
DATAP, DATAN 1.5 V
(single-ended differential)





Description

The ADN2870 laser diode driver is designed for advanced SFPand SFF modules, using SFF-8472 digital diagnostics. The devicefeatures dual-loop control of the average power and extinction ratio, which automatically compensates for variations in laser characteristics over temperature and aging. The laser need only be calibrated at 25°C, eliminating the need for expensive and time consuming temperature calibration. The ADN2870 supports single-rate operation from 50 Mbps to 3.3 Gbps or multirate from 155 Mbps to 3.3 Gbps.

Average power and extinction ratio can be set with a voltage provided by a microcontroller DAC or by a trimmable resistor.The part provides bias and modulation current monitoring as well as fail alarms and automatic laser shutdown. The deviceinterfaces easily with the ADI ADuC70xx family of micro-converters and with the ADN289x family of limiting amplifiers to make a complete SFP/SFF transceiver solution. An SFPreference design is available. ADN2870 is available in a spacesaving 4 mm ×4 mm LFCSP package specified over the −40°C to +85°C temperature range.






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