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Optical module controller supports SFF-8472 spec

Posted: 29 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:optical module? SFP+ controller? interface?

DS1873 SFP+ controller

Maxim Integrated Products has developed the DS1873 SFP+ controller with analog LDD interface. Combined with the MAX3736 laser driver, the DS1873 controls and monitors all functions for SFF, SFP, and SFP+ optical modules, while fully supporting the SFF-8472 standard. Utilizing 0.35?m technology, the DS1873 implements a high level of integration key to APC loop, modulation current control and eye safety functionality.

Laser modulation is controlled by a temperature-driven LUT. Two additional 9bit DAC outputs with 36-entry LUTs are provided. The DS1873 monitors six analog channels: temperature, Vcc, and MON1-MON4. MON3 is a fully differential input. In its small 5mm x 5mm package, the DS1873 completely and efficiently fulfills a critical requirement for SFP+ optical module manufacturers.

The DS1873 is fully specified over the -40C to +95C temperature range, and is available in a 28-pin TQFN package with exposed pad. Pricing begins at $1.39 (1000-up, FOB USA).

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