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.

  • 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
LTC5564 Typical Application
LTC5564 Typical Application
  • 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
LTC5564 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC5564HUD#PBF3x3 QFN-16H$4.91$3.44
LTC5564HUD#TRPBF3x3 QFN-16H$4.99$3.49
LTC5564IUD#PBF3x3 QFN-16I$4.12$2.90
LTC5564IUD#TRPBF3x3 QFN-16I$2.95
Demo Boards
Part NumberDescriptionPrice
DC1646ALTC5564 | Ultrafast 7ns Response Time 15GHz RF Power Detector W/ Comparator Demo Circuit optimized for 5.2GHz to 6.2GHz$100.00
Design Note
Reliability Data
Press Release
Software and Simulation
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LTC5564 S Parameters
LTC5564 Footprints and Symbols