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LT5557 - 400MHz to 3.8GHz 3.3V Active Downconverting Mixer

General Description

The LT®5557 active mixer is optimized for high linearity, wide dynamic range downconverter applications.

The IC includes a high speed differential LO buffer amplifier driving a double-balanced mixer.

Broadband, integrated transformers on the RF and LO inputs provide single-ended 50Ω interfaces.

Key Features

  • n Wide RF Frequency Range: 400MHz to 3.8GHz.
  • n High Input IP3: 25.6dBm at 900MHz 24.7dBm at 1950MHz 23.7dBm at 2.6GHz n Conversion Gain: 3.3dB at 900MHz 2.9dB at 1950MHz n.
  • 3dBm LO Drive Level n Low LO Leakage n Low Noise Figure: 10.6dB at 900MHz 11.7dB at 1950MHz n Low Power: 3.3V/269mW n 50Ω Single-Ended RF and LO Ports n Very Few External Components n 16-Lead (4mm × 4mm) QFN Package.

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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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LT5557 400MHz to 3.8GHz 3.3V Active Downconverting Mixer Features n Wide RF Frequency Range: 400MHz to 3.8GHz* n High Input IP3: 25.6dBm at 900MHz 24.7dBm at 1950MHz 23.7dBm at 2.6GHz n Conversion Gain: 3.3dB at 900MHz 2.9dB at 1950MHz n –3dBm LO Drive Level n Low LO Leakage n Low Noise Figure: 10.6dB at 900MHz 11.7dB at 1950MHz n Low Power: 3.3V/269mW n 50Ω Single-Ended RF and LO Ports n Very Few External Components n 16-Lead (4mm × 4mm) QFN Package Applications n Cellular, CDMA, WCDMA, TD-SCDMA and UMTS Infrastructure n WiMAX n Wireless Infrastructure Receiver n Wireless Infrastructure PA Linearization n 900MHz/2.4GHz/3.5GHz WLAN Description The LT®5557 active mixer is optimized for high linearity, wide dynamic range downconverter applications.