LMH2120 - National Semiconductor Corporation

LMH2120 6 GHz Linear RMS Power Detector

The LMH2120 is a 40 dB Linear RMS power detector particularly suited for accurate power measurement of modulated RF signals that exhibit large peak-to-average ratios, i.e, large variations of the signal envelope. Such signals are encountered in W-CDMA and LTE cell phones. The RMS measurement topology inherently ensures a modulation insensitive measurement. T.

Features

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■ Linear root mean square response 40 dB linear-in-V power detection range Multi-band operation from 50 MHz to 6 GHz Lin conformance better than ±0.5 dB Highly temperature insensitive Modulation independent response Minimal Slope and Intercept variation Shutdown functionality Wide supply range from 2.7V to 5V Tiny 6-bump micro SMD package Applications
■ Multi Mode, Multi band RF power control — GSM/EDGE — CDMA/CDMA2000 — W-CDMA — OFDMA — LTE
■ Infrastructure RF Power Control Typical Application Output Voltage vs. RF Input Power at 1900 MHz 30055733 30055701 © 2010 Nation.