76 GHz to 81 GHz FMCW Radar Receiver

Product No: WEA7681RXV0222GDownload Datasheet

  • Applications:Automotive Radar Applications
  • Maturity:GDS Ready
  • Foundry:GF
  • Geometry (nm):22nm
  • Process Node:22FDX

The WEA7681RX22G is a complete Zero-IF receiver for radar applications covering the 76 GHz to 81 GHz automotive band. The receiver integrates a Low Noise Amplifier, a down conversion mixer, a 1st order active highpass filter, a 1st order passive high pass filter and a 3rd order lowpass filter and a variable gain amplifier with digital gain control. The local oscillator chain is also integrated on the same IP. The LO accepts an input at 38GHz to 40.5GHz. The receiver has a dual saturation detector scheme for strong blocker detection at the mixer and the filter output. The receiver has a build-in Analog Test Bus (ATB) for complete monitoring of the bias conditions of all blocks, for FuSa. It is implemented in 22FDX FDSOI process. The WEA7681RX22G occupies a silicon area of 1450 um x 450 um.

Key Features
  • RF Input Frequency Range: 76 GHz to 81 GHz
  • LO Input Frequency Range: 38 GHz to 40.5GHz
  • Output Frequency Range: DC-120 MHz
  • Power Supply Voltages: 1.8V Analog, 0.8V LNA, 0.8V Logic
  • RX noise figure : 8.7 dB typ.(Includes 1dB loss from package to silicon transition)
  • Programmable RX Gain: 22.5 – 62.5 dB
  • RX In-band OIP3: 29 dBm
  • Input 1dBCP: -19 dBm (front end compression)
  • RX Channel Flatness @ 1GHz BW: 0.19 dB
  • Programmable IF Bandwidth:
  • Low Pass Filter Cut-off: 60 MHz – 120 MHz
  • High Pass Filter Cut-off:  2 MHz – 30 MHz
  • Automotive Grade 1 (-40 oC to 125 oC).
  • Power Consumption: 203 mW
  • Area:1450 um x 450 um
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