LMH2100

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LMH2100 SNWS020C – NOVEMBER 2007 – REVISED OCTOBER 2015 LMH2100 50-MHz to 4-GHz 40-dB Logarithmic Power Detector for CDMA and WCDMA 1 Features 1 Supply Voltage: 2.7 V to 3.3 V Output Voltage: 0.3 V to 2 V 40-dB Linear in dB Power Detection Range Shutdown Multi-Band Operation from 50 MHz to 4 GHz 0.5-dB Accurate Temperature Compensation External Configurable Output Filter Bandwidth 0.4-mm Pitch DSBGA Package 2 Applications UMTS/CDMA/WCDMA RF Power Control GSM/GPRS RF Power Control PA Modules IEEE 802.11b, g (WLAN) 3 Description The LMH2100 is a 40-dB RF power detector intended for use in CDMA and WCDMA applications. The device has an RF frequency range from 50 MHz to 4 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 2.7 V to 3.3 V. The LMH2100 has an RF power detection range from −45 dBm to −5 dBm, and is ideally suited for direct use in combination with a 30-dB directional coupler. Additional low-pass filtering of the output signal can be realized by means of an external resistor and capacitor. Typical Application: Output RC Low Pass Filter shows a detector with an additional output low pass filter. The filter frequency is set with RS and CS. Typical Application: Feedback (R)C Low Pass Filter shows a detector with an additional feedbac...