Date: 21/06/2010

10GHz RMS detector with 57dB dynamic range provides accurate RF signal measurement

Linear has unveiled the LTC5582, a high dynamic range 10GHz RMS detector, which it claims will set a new standard in accurate measurement of RF signals. It can offer a linear accuracy of +/-0.2dB over a 43dB dynamic range at 2.14GHz, regardless of the high crest-factor modulations used in 3G and 4G broadband wireless networks such as LTE, WiMAX, TD-SCDMA, W-CDMA and CDMA2000.

The LTC5582 is powered from a single 3.3V supply with an operating current of 42mA. This device has an Enable pin, allowing the chip to power down. In shutdown mode it can draw trickle current of less than 10uA. The LTC5582 has an operating frequency range of 40MHz to 10GHz and provides a 57dB dynamic range from 450MHz to 2.7GHz with an RF measurement range from -56dBm to 1dBm to +/-1dB error. This device is also can provide 46dB dynamic range at 6GHz and 38dB at 10GHz. The RF input can operate single-ended thus requiring no external balun transformer. The LTC5582 has fast settling characteristics with a rise time of 500ns and a fall time of 4.5us thus allowing it to be used in various signal envelop tracking applications. The device also provide on-chip provisions for first- and second-order temperature compensation

Package: 3mm x 3mm 10-pin DFN.

Operating temperature range: -40°C to 85°C.

Price: starts at US$6.25 for 1,000 piece quantities.

For more information visit: www.linear.com/pr/5582