General Description

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 Q0.5dB relative to room temperature.

The MAX2209A comes in a space-saving 2 x 2, 0.5mm pitch UCSP™.

Features

♦ -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

Applications

   Dual-Band WCDMA Handsets

   High-Speed Downlink Packet Access (HSDPA)

   High-Speed Uplink Packet Access (HSUPA)