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LTC5564 - UltraFast™ 7ns Response Time 15GHz RF Power Detector with Comparator

The LTC®5564 is a precision, RF power detector for applications in the 600MHz to 15GHz frequency range. The LTC5564 operates with input power levels from –24dBm to 16dBm.

A temperature compensated Schottky diode peak detector, gain-selectable operational amplifier, and fast comparator are combined in a small 16-lead 3mm × 3mm QFN package.

The RF input signal is peak detected and then sensed by both a comparator and amplifier. The comparator provides a 9ns response time to input levels exceeding VREF along with a latch enable/disable function. The gain selectable operational amplifier provides a 350V/μs slew rate and 75MHz of demodulation bandwidth to the analog output.

VOUTADJ and VREF pins allow for the adjustment of VOUT offset and VCOMP switch point voltages, respectively.

Features Temperature Compensated Schottky RF Peak Detector Wide Input Frequency Range: 600MHz to 15GHz† Wide Input Power Range: –24dBm to 16dBm 7ns Typical Response Time 75MHz Demodulation Bandwidth Programmable Gain Settings for Improved Sensitivity Adjustable Amplifier Output Offset Voltage High Speed Comparator with Latch Enable: 9ns Typical Response Time 16-Lead 3mm × 3mm QFN Package Typical Application

Applications RF Signal Presence Detectors for: 802.11a, 802.11b, 802.11g, 802.15, Optical Data Links, Wireless Data Modems, Wireless and Cable Infrastructure 5.8GHz ISM Band Radios MMDS Microwave Links PA Power Supply Envelope Tracking Control Fast Alarm RF Power Monitor Envelope Detector Ultra-Wideband Radio Radar Detector Packaging

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