LTC5509ESC6#TRMPBF

LTC5509 is a 40MHz to 2.7GHz monolithic logarithmic mean-squared RF power detector. It is capable of RMS measurement of an AC signal with wide dynamic range, from -52dBm to 13dBm depending on frequency. The power of the AC signal in an equivalent decibel-scaled value is precisely converted into DC voltage on a linear scale, independent of the crest factor of the waveforms. It is suitable for precision RF power measurement and level control for a wide variety of RF standards, including CDMA, W-CDMA, CDMA2000, TD-SCDMA and WiMAX. The DC output is buffered with a low output impedance amplifier capable of driving a high capacitance load. It is used in applications such as RMS power measurement, RF power control, receive and transmit gain control, RF instrumentation.

• Accurate RMS power measurement of high crest factor modulated waveforms
• Linear DC output vs input power in dBm
• Linear dynamic range upto 60dB
• Low impedance output buffer capable of driving high capacitance load
• Supply current is 26.5mA typical at (TA = 25°C, VCC = 5V)
• Shutdown current is 0.1μA typical at (EN = 0V, VCC = 5V)
• Fall time is 8μS typical at (1.6V to 0.2V, 90% to 10%, C1 = 22nF, fRF = 2140MHz)
• Deviation from CW response is 0.3dB typical at ( 11dB peak to average ratio, 3-carrier CDMA2K)
• Operating temperature is -40°C to 85°C
• Package style is 10-lead plastic DFN

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