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22 July 2008


Hittite launches first RMS and peak-to-average power detector SMT IC

Hittite Microwave Corp of Chelmsford, MA, USA, which designs and supplies RF, microwave and millimeter-wave ICs, modules and subsystems, has introduced what it claims is the industry’s first integrated RMS power detector that is capable of simultaneously measuring the instantaneous (RF envelope) power and the true RMS power of any RF input signal from 100MHz to 3.9GHz.

The HMC614LP4E provides a ‘true RMS’ representation of any RF/IF input signal and is suited to wide-bandwidth, wide-dynamic-range applications requiring repeatable power measurement over temperature, especially where the RF/IF waveshape and crest factor change with time. The device uses an new circuit architecture that enables simultaneous measurement of peak power and average power. A peak-to-average output signal provides a direct read of the signal crest factor.

The HMC614LP4E provides a differential input sensing range of 72dB, to ±1dB detection accuracy up to 3.9GHz with what is claimed to be excellent crest factor immunity and temperature stability. The device also exhibits less than ± 0.1dB measurement deviation at +12dB crest factor, and less than ± 0.5dB measurement deviation over the full operating temperature range.

Operating from a +5V supply, the device is specified for operation over the -40°C to +85°C temperature range, and is supplied in a compact 4mm x 4mm leadless QFN package.

SMT product samples and evaluation PC boards for all SMT-packaged products are available.

See related item:

Hittite’s Q1 revenues rise 19% year-on-year

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