Analog Devices has announced the new LTC5597 IC, 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.
|100 MHz to 70 GHz RMS Power Detector.|
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.
|Output Voltage vs Frequency.|
The enable interface switches the device between active measurement mode and a low power shutdown mode.
|Demonstration Circuit 2932A – a High Accuracy RMS Power Detector
Featuring the LTC5597 IC.
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