General Description

The MAX3664 low-power transimpedance preamplifier for 622Mbps SDH/SONET applications consumes only 85mW. Operating from a single +3.3V supply, it converts a small photodiode current to a measurable differential voltage. A DC cancellation circuit provides a true differential output swing over a wide range of input current levels, thus reducing pulse-width distortion. The differential outputs are back-terminated with 60Ω per side.

Features

♦ Single +3.3V Supply Operation

♦ 55nARMS Input-Referred Noise

♦ 6kΩ Gain

♦ 85mW Power

♦ 300µA Peak Input Current

♦ 200ps Max Pulse-Width Distortion

♦ Differential Output Drives 100Ω Load

♦ 590MHz Bandwidth

Applications

SDH/SONET Receivers

PIN/Preamplifier Receivers

Regenerators for SDH/SONET