Evaluation Board for the LMV225 microSMD

Description:

This board can be used to evaluate National Semiconductor's LMV225/LMV226/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 LMV226/LMV228 are 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 LMV226 has an additional output voltage buffer and therefore a low output impedance. The LMV225/LMV226/LMV228 have an integrated filter for low-ripple average power detection of CDMA signals. Additional filtering can be applied using a single external capacitor.

Contents:

• LMV225 microSMD Evaluation Board
• LMV225 Datasheet
• Application Note 1804 for the LMV225 microSMD EVALUATION BOARD

• AN-1804 - Application Note 1804 LMV225/LMV226/LMV228 microSMD Evaluation Board
• AN-1817 - Application Note 1817 LMV225/LMV228 LLP Evaluation Board
• AN-1766 - Application Note 1766 Evaluation Board for the LMV221 Logarithmic Power Detector
• AN-1375 - Application Note 1375 Linear-In-dB RF Power Detector In W-CDMA User Equipment
• AN-1374 - Application Note 1374 Use of LMV225 Linear-In-dB RF Power Detector In CDMA2000 1X and EV_DO Mobile Station and Access Terminal
• AN-1438 - Application Note 1438 A Simple Method to Reduce DC Power Consumption in CDMA RF Power Amplifiers Through the LMV225 and an Efficient Switcher