Analog Devices LTC5564 Product Info

• 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
• Temperature Range: –40°C to 125°C

The LTC5564 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 V_REF 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.

V_OUTADJ and V_REF pins allow for the adjustment of V_OUT offset and V_COMP switch point voltages, respectively.

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