MAX3664

622Mbps, Ultra-Low-Power, 3.3V Transimpedance Preamplifier for SDH/SONET


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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.

The transimpedance gain is nominally 6kΩ. For input signal levels beyond approximately 100µAp-p, the amplifier will limit the output swing to 900mV. The MAX3664's low 55nA input noise provides a typical sensitivity of -33.2dBm in 1300nm, 622Mbps receivers.

The MAX3664 is designed to be used in conjunction with the MAX3675 clock recovery and data retiming IC with limiting amplifier. Together, they form a complete 3.3V, 622Mbps SDH/SONET receiver.

In die form, the MAX3664 is designed to fit on a header with a PIN diode. It includes a filter connection, which provides positive bias for the photodiode through a 1kΩ resistor to VCC. The device is also available in 8-pin SO and µMAX packages.

Key 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/Uses

    • PIN/Preamplifier Receivers
    • Regenerators for SDH/SONET
    • SDH/SONET Receivers

    Quality and Environmental Data

    Product Reliability Reports: MAX3664.pdf 
    Lead-Free Package Tin (Sn) Whisker Reports
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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