Analog Devices®5596 100 MHz to 40 GHz Linear-in-dB RMS Power Detector

The LTC5596, from Analog Devices, is a high-accuracy RMS power detector that provides a very-wide RF input bandwidth from 100 MHz up to 40 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 a 29 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 the 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.

Features
Ultra-wide matched input frequency range: 100 MHz to 40 GHz 35 dB linear dynamic range (less than ±1 dB error) 29 mV/dB logarithmic slope ±1 dB flat response from 200 MHz to 30 GHz Accurate RMS power measurement of high crest factors (up to 12 dB) modulated waveforms		Low-power shutdown mode Low supply current: 30 mA at 3.3 V (typ.) Small, 2 mm × 2 mm, plastic DFN8 package I-grade: –40°C to 105°C rated H-grade: –40°C to 125°C rated, with guaranteed log-slope and log-intercept ESD rating: 3500 V HBM and 1500 V CDM
Applications
Point-to-point microwave links Instrumentation and measurement equipment Military radios LTE, Wi-Fi, and WiMAX wireless networks		RMS power measurement Receive and transmit gain control RF PA transmit power control

Video:  LTC5596 35GHz RMS Detector Breaks Through Dynamic Range Barrier