LTC5597 Power Detector

ADI's LTC5597 is the only RMS detector in the market operating above 40 GHz, enabling accurate power measurement in Q and V-band satcom, Pt-Pt links, and a range of instrumentation and ATE equipment (signal generators, signal analyzers). It is a much more compact, higher performance solution than the alternative of discretely built and tuned (Schottky) detectors (not RMS)..

The LTC5597 is a high accuracy RMS power detector that provides a very wide RF input bandwidth from 100 MHz up to 70 GHz. This makes the device suitable for a wide range of RF and microwave applications, such as point-to-point microwave links, instrumentation, and power control applications

The DC output voltage of the detector is an accurate representation of the average signal power applied to the RF input. The response is linear-in-dB with 28.5 mV/dB logarithmic slope over a 35 dB dynamic range with typically better than ±1 dB accuracy. The detector is particularly suited for measurement of waveforms with crest factor (CF) as high as 12 dB and waveforms that exhibit a significant variation of the crest factor during measurement.

To achieve higher accuracy and lower output ripple, the averaging bandwidth can be externally adjusted by a capacitor connected between the FLTR and OUT pins. The enable interface switches the device between active measurement mode and a low power shutdown mode.

Block Diagrams and Graphs