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MAX3946 - SFP+ Laser Driver

Datasheet Summary

Description

The MAX3946 is a +3.3V, multirate, low-power laser diode driver designed for Ethernet and Fibre Channel transmission systems at data rates up to 11.3Gbps.

This device is optimized to drive a differential transmitter optical subassembly (TOSA) with a 25I flex circuit.

Features

  • S 225mW Power Dissipation Enables < 1W SFP+ MAX3946 Enabling the Use of Unmatched FP/DFB TOSAs S Supports SFF-8431 SFP+ MSA and SFF-8472 Digital Diagnostic S 225mW Power Dissipation at 3.3V (IMOD = 40mA, IBIAS = 60mA Assuming 25I TOSA) S Single +3.3V Power Supply S Up to 11.3Gbps (NRZ) Operation S Programmable Modulation Current from 10mA to 100mA (5I Load) S Programmable Bias Current from 5mA to 80mA S Programmable Input Equalization S Programmable Output Deemphasis S 25I Output.

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Datasheet preview – MAX3946

Datasheet Details

Part number MAX3946
Manufacturer Maxim Integrated Products
File Size 1.11 MB
Description SFP+ Laser Driver
Datasheet download datasheet MAX3946 Datasheet
Additional preview pages of the MAX3946 datasheet.

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Full PDF Text Transcription

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19-5182; Rev 0; 3/10 www.DataSheet4U.com TION KIT EVALUA BLE AVAILA 1.0625Gbps to 11.3Gbps, SFP+ Laser Driver with Laser Impedance Mismatch Tolerance General Description The MAX3946 is a +3.3V, multirate, low-power laser diode driver designed for Ethernet and Fibre Channel transmission systems at data rates up to 11.3Gbps. This device is optimized to drive a differential transmitter optical subassembly (TOSA) with a 25I flex circuit. The unique design of the output stage enables use of unmatched TOSAs, greatly reducing headroom limitations and lowering power consumption. The device receives differential CML-compatible signals with on-chip line termination.
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