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MAX3665 - 622Mbps / Ultra-Low-Power / 3.3V Transimpedance Preamplifier

General Description

The MAX3665 low-power transimpedance preamplifier for 622Mbps SDH/SONET applications consumes only 70mW at VCC = 3.3V.

Operating from a single +3.3V or +5.0V supply, it converts a small photodiode current to a measurable differential voltage.

Key Features

  • o +3.3V or +5.0V Single-Supply Operation o 55nARMS Input-Referred Noise o 70mW Power Consumption at VCC = 3.3V o 8kΩ Gain o 450µA Peak Input Current o 260ps max Deterministic Jitter o Differential Output Drives 100Ω Load o 470MHz Bandwidth MAX3665 _______________Ordering Information PART MAX3665EUA MAX3665E/D TEMP. RANGE -40°C to +85°C (see Note) PIN-.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-1601; Rev 0; 1/00 622Mbps, Ultra-Low-Power, 3.3V Transimpedance Preamplifier for SDH/SONET ________________General Description The MAX3665 low-power transimpedance preamplifier for 622Mbps SDH/SONET applications consumes only 70mW at VCC = 3.3V. Operating from a single +3.3V or +5.0V 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 50Ω per side. The overall transimpedance gain is nominally 8kΩ. For input signal levels beyond approximately 50µAp-p, the amplifier will limit the output swing to 250mV.