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RC2211 Datasheet, PDF (1/16 Pages) List of Unclassifed Manufacturers – FSK Demodulator/Tone Decoder | |||
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RC2211
FSK Demodulator/Tone Decoder
Electronics
Semiconductor Division
Features
¥ Wide frequency range à 0.01 Hz to 300 kHz
¥ Wide supply voltage range à 4.5V to 20V
Â¥ DTL/TTL/ECL logic compatibility
Â¥ FSK demodulation with carrier-detector
¥ Wide dynamic range à 2 mV to 3 VRMS
¥ Adjustable tracking range à ±1% to ±80%
¥ Excellent temperature stability à 20 ppm/°C typical
Applications
Â¥ FSK demodulation
Â¥ Data synchronization
Â¥ Tone decoding
Â¥ FM detection
Â¥ Carrier detection
Description
The RC2211 is a monolithic phase-locked loop (PLL)
system especially designed for data communications. It is
particularly well-suited for FSK modem applications, and
operates over a wide frequency range of 0.01 Hz to 300 kHz.
It can accommodate analog signals between 2 mV and 3V,
and can interface with conventional DTL, TTL and ECL
logic families. The circuit consists of a basic PLL for
tracking an input signal frequency within the passband, a
quadrature phase detector which provides carrier detection,
and an FSK voltage comparator which provides FSK
demodulation. External components are used to indepen-
dently set carrier frequency, bandwidth and output delay.
Block Diagram
FSK
Input
Preamp
f-Detector
Loop Filter
f
VCO
f
Data Filter
FSK
Comparator
FSK
Data
Output
f-Detector
Lock
Detector
Filter
Lock
Detector
Outputs
Lock
Detector
Comparator
65-2211-01
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