LT5534 - 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.
By Linear Technology Corporation