LT5570 Series

Fast Responding, 40MHz to 2.7GHz Mean-Squared Power Detector

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

Fast Responding, 40MHz to 2.7GHz Mean-Squared Power Detector

Part	RF Type	Current - Supply	Mounting Type	Package / Case	Frequency [Min]	Frequency [Max]	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Input Range [Min]	Input Range [Max]	Accuracy
Analog Devices Inc./Maxim Integrated LT5570IDD#TRPBF	CDMA2000 Cellular TD-SCDMA W-CDMA WiMAX	32.5 mA	Surface Mount	10-WFDFN Exposed Pad	40 MHz	2700 MHz	4.75 V	5.25 V	10-DFN (3x3)	-52 dBm	13 dBm	30 %

Catalog

Fast Responding, 40MHz to 2.7GHz Mean-Squared Power Detector

Description

The LT5570 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. The LT5570 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.ApplicationsRMS Power MeasurementRF Power ControlReceive and Transmit Gain ControlW-CDMA, CDMA2000, TD-SCDMA, WiMAXRF Instrumentation