MAX2209A RF Power Detector with Shutdown Control

RF Power Detector with Shutdown Control

Industry’s Smallest Power Detector Is Now Faster and Power Efficient

The MAX2209A is a wideband (800MHz to 2GHz) RF power detector.

It takes an RF signal from the directional coupler at the input, and outputs a DC voltage proportional to the RF peak voltage.

The change in output voltage versus temperature is very repeatable from part to part and enables a lookup table based on nominal behavior, minimizing the effective detection error to less than ±0.5dB relative to room temperature.
The MAX2209A comes in a space-saving 2 x 2, 0.5mm pitch UCSP™.


-25dBm to -5dBm Power Detection Range

±0.5dB Detection Error Due to Temperature

+2.7V to +5V Single-Supply Operation

Space-Saving 4-Bump, 1mm² UCSP Package

Shutdown Control

140ns Step-Response Time



  • Dual-Band WCDMA Handsets
  • High-Speed Downlink Packet Access (HSDPA)
  • High-Speed Uplink Packet Access (HSUPA)




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