Evaluation Board for the LMV228
AN-1817 LMV225/LMV228 WSON Evaluation Board (Rev. B)
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30 Apr 2013 58 views Read Abstract
This board can be used to evaluate Texas Instruments LMV225/LMV228 RF detectors. These logarithmic power detectors are intended for use in CDMA and WCDMA applications. They have a 30 dB dynamic range and an RF frequency range from 450 MHz to 2 GHz. The LMV228 is designed to be used in combination with a directional coupler, while the LMV225 detector is especially suited for power measurements via a high-resistive tap as well as directional coupler. The LMV225/LMV228 have an integrated filter for low-ripple average power detection of CDMA signals. Additional filtering can be applied using a single external capacitor.