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The CHA4253a98F a K-band MPA in bare die

The CHA4253a98F is a 4 stage 17-24GHz Medium Power Amplifier


This circuit features an excellent gain of 26dB and a very high OIP3 of 35dBm.

Well suited for Point to Point and K-band applications, the CHA4253a98F covers also a wide range of commercial communication systems.


This circuit is designed on a UMS proprietary 0.15µm gate length pHEMT process

This product also exists in QFN (CHA4253aQQG) and in SMD hermetic package (CHA4253-FAB)

Main Features


  • Frequency range: 17-24GHz
  • Linear Gain: 26dB
  • OIP3: 32dBm
  • P-1dB: 24.5dBm
  • Noise Figure: 7.5dB
  • Psat 25dBm
  • DC bias: 230mA@4V
  • chip size: 2.61 x 1.66 x 0.07mm
 - Product