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Linear Tech power detectors draw low supply current

Posted: 04 Jan 2002 ?? ?Print Version ?Bookmark and Share

Keywords:linear technology? power detector? power ic? ltc5505 1? ltc5505 2?

The LTC5505-1 and LTC5505-2 RF power detectors offer a >40dB dynamic range for 300MHz to 3GHz applications. Housed in ThinSOT packages, the devices occupy only 60 percent of the space required by a discrete design. They also draw less supply current.

Compared to integrated solutions, the power detectors likewise minimize system design iteration through factory-guaranteed precision RF parameter limits and temperature-compensated performance. Applications include wireless data modems, WLLs and broadband systems, as well as multimode cell phones and wireless infrastructure.

LTC5505-x family of devices integrates a temperature-compensated Schottky diode peak detector and buffer amplifier in a tiny 1mm profile 5-lead ThinSOT housing. The RF input voltage is peak detected and supplied to the output voltage pin.

The LTC5505-1 operates with input power levels from -28dBm to 18dBm. The LTC5505-2 operates with lower input power level and higher sensitivity from -32dBm to 12dBm. Each consumes only 500A supply current and functions from 2.7V to 6V supply voltage. A power-saving shutdown mode reduces supply current to <2A.

Pricing begins at $1.20 each in 1,000-piece quantities.

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