Linear Technology Corporation (Linear Technology Corporation) introduced a precision RF power detector The LTC5564, the device operates within a frequency range of 600MHz to 15GHz, has excellent 7ns pulse RF signal fast response time. In addition, the device features a built-in fast comparator with a propagation delay of 9ns. The comparator's threshold voltage can be set by the user, thus providing a flexible trip point. The device's output can be latched by determining a latch enable pin, allowing fast capture of short durations, single event signals, or some fault condition. Its industry-best performance delivers unprecedented speed (in timing measurements), fast response to fault detection, and RF power measurements in microwave systems.
The LTC5564 is capable of measuring RF input signals from -24dBm to +16dBm. The dynamic range is provided by a programmable gain output amplifier with four gain settings, which are digitally controlled by two binary-weighted logic input pins. Therefore, the sensitivity can be improved when measuring a low level signal. In addition, the bandwidth of the output amplifier can also meet the requirements for envelope demodulation of RF modulated signals up to 75MHz. This RF power detector features a temperature compensation circuit that enables repeatable and stable RF power measurements under varying environmental conditions.
The LTC5564 's speed and frequency capabilities open up a number of useful applications including microwave communications, telemetry, radar detectors, RF power amplifier monitoring and fault detection, automatic level control, test instrumentation and cellular networks.
The LTC5564 can be powered from a single 3.3V or 5V supply. The standard operating mode has a nominal current consumption of 44 mA. The device is specified for operation over the -40°C to 85°C temperature range. The LTC5564 is available in a small 3mm x 3mm 16-pin QFN package. The purchase price is $2.90 per piece. For more information, please visit
Photo caption: Ultra-fast 15GHz RF power detector
Performance Summary: LTC5564
· Operating frequency range from 600MHz to 16GHz
· Ultra fast detector response time 7ns
· Dynamic range 40dB
· RF input power range -24dBm to +16dBm
· Built-in fast comparator 9ns
· Temperature compensation
· Small package 3mm x 3mm QFN
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