MAX2203 RMS功率检测器   概述   The MAX2203 RMS power detector is designed to operate from 800MHz to 2.0GHz. The device is ideal for wideband code-division multiple access (WCDMA), cdma2000®, and high-speed downlink/uplink packet access. The MAX2203 accepts an RF signal at the input, and outputs the same voltage regardless of the peak-average of the input signal. The output voltage and input power is linear in dB. The device has a -24dBm to +3dBm detection range, and every dB change in input power gives 35mV (typ) change in output voltage.

The MAX2203 operates from a 2.5V to 4.2V supply and is specified over the -40°C to +85°C extended temperature range. The device is available in a 6-bump WLP package.   关键特性   -24dBm to +3dBm Power Detection Range
35mV/dB (typ) Log Detector
0.1dB (typ) RMS Accuracy from WCDMA Modulation Change
±0.4dB Detection Error Due to Temperature
+2.5V to +4.2V Single-Supply Operation
Space-Saving 6-Bump WLP Package

应用/使用

高速下行链路分组接入(HSDPA)
高速上行链路分组接入(HSUPA)
WCDMA、cdma2000、1xEVDO

Typical Operating Circuit