50MHz to 3GHz RF Power Detector with 60dB Dynamic Range

The LT5534 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.

Applications

* RF RSSI and ACC

* RF Power Control

* CATV Power Detection

* Optical Receiver Gain Control

* 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