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Ultrafast 7ns Response Time 15GHz RF Detector with Fast Comparator
MILPITAS, CA - November 30, 2010 - Linear Technology introduces
the LTC5564, a precision RF
power detector that operates from 600MHz to 15GHz, with
exceptionally fast response time of 7ns from a pulsed RF signal.
Moreover, the device has an on-chip fast comparator with a
propagation delay of 9ns. The comparator threshold voltage is
user-settable, enabling a flexible trip point. The device's output
may be latched by asserting a latch-enable pin, permitting a fast
capture of a short-duration, single-event signal or a fault
condition. Its best-in-class performance enables unprecedented
speed in timing measurements, rapid response to fault detection and
RF power measurements in microwave systems.
The LTC5564 can measure RF input signals from -24dBm to +16dBm.
This dynamic range is provided by a programmable gain output
amplifier with four gain settings, which are digitally controlled
by two logic input pins that are binary-weighed. Thus improved
sensitivity can be achieved when measuring low level signals.
Moreover, the output amplifier is bandwidth capable of demodulating
the envelope of an RF modulated signal up to 75MHz. The detector
incorporates temperature compensation circuitry, enabling
repeatable and stable RF power measurements under varying
environmental conditions.
The LTC5564's speed and frequency capabilities open up a wide range
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. Normal
operation draws a nominal current of 44mA. The device is rated for
operation from -40°C to 85°C. The LTC5564 is offered in a small 3mm
x 3mm 16-pin QFN package. Pricing starts at $2.90 each in 1,000
piece quantities. For more information, visit www.linear.com/5564.
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Summary of Features: LTC5564
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Ultrafast 15GHz RF Power Detector |
