DESCRIPTION
The LT®5534 is a 50MHz to 3GHz monolithic RF power detector capable of measuring RF signals over a 60dB dynamic range. The RF signal in a decibel scale is precisely converted into DC voltage on a linear scale. The 60dB input dynamic range is achieved using cascaded RF detectors and RF limiters. Their outputs are summed to generate an accurate log-linear DC voltage proportional to the input RF signal in dB. The output is buffered with a low output impedance driver. The LT5534 delivers superior temperature stability (typical output variation within ±1dB over the full temperature range). The output responds in less than 40ns to a large RF input signal.

FEATURES
■ RF Frequency Range: 50MHz to 3GHz
■ Linear Dynamic Range: 60dB
■ Exceptional Accuracy over Temperature and Power Supply
■ Fast Transient Response: 38ns Full-Scale Settling Time
■ Single 2.7V to 5.25V Supply
■ Low Supply Current: 7mA
■ Shutdown Current: 0.1µA
■ Tiny 6-Lead SC70 Package

APPLICATIONS
■ RF RSSI and ACC
■ RF Power Control
■ CATV Power Detection
■ Optical Receiver Gain Control