LMV228 采用微型 SMD 封装的射频功率检测器,用于 CDMA 和 WCDMA

The LMV225/LMV226/LMV228 are 30 dB RF power detectors intended for use in CDMA and WCDMA applications. The device has an RF frequency range from 450 MHz to 2 GHz. It provides an accurate temperature and supply compensated output voltage that relates linearly to the RF input power in dBm. The circuit operates with a single supply from 2.7V to 5.5V. The LMV225/LMV226/LMV228 have an integrated filter for low-ripple average power detection of CDMA signals with 30 dB dynamic range. Additional filtering can be applied using a single external capacitor.

The LMV225 has an RF power detection range from -30 dBm to 0 dBm and is ideally suited for direct use in combination with resistive taps. The LMV226/LMV228 have a detection range from -15 dBm to 15 dBm and are intended for use in combination with a directional coupler

LMV228
RF Frequency (MHz) 450-2000    
Dynamic Range (dB) 30    
Detector Power Range -15dBm to 15dBm    
Accuracy (dB) 1    
Inputs/Outputs 1/1    
Transfer Linear in dB    
Supply Min (Volt) 2.7    
Supply Max (Volt) 5    
Supply Current (mA) 4.9    
Shutdown Yes    
Detector External Coupler, Internal Det    
VCO Freq Range 0.4 to 2GHz    
Application CDMA,WCDMA,GSM,EDGE,GPRS,TDMA
LMV228 特性
LMV228 工具与软件
培训内容 型号 软件/工具类型
LMV228 Evaluation Module LMV228EVM 开发电路板/EVM
LMV228 应用技术支持与电子电路设计开发资源下载
  1. LMV228 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器RF/IF 和 ZigBee®解决方案选型与价格 . xls
  3. Junction Temperature of TRF1123 & TRF1223 & Recommended PCB Layout Guidelines (slwa038.HTM, 8 KB)
  4. A Planar, Balanced Approach to Increase Transmitter Linearity (slwa039.HTM, 8 KB)