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RAYTHEON DEVICE - FSK Demodulator/Tone Decoder

Numéro de référence RC2211
Description FSK Demodulator/Tone Decoder
Fabricant RAYTHEON DEVICE 
Logo RAYTHEON DEVICE 





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RC2211 fiche technique
RC2211
FSK Demodulator/Tone Decoder
Electronics
Semiconductor Division
Features
¥ Wide frequency range Ð 0.01 Hz to 300 kHz
¥ Wide supply voltage range Ð 4.5V to 20V
¥ DTL/TTL/ECL logic compatibility
¥ FSK demodulation with carrier-detector
¥ Wide dynamic range Ð 2 mV to 3 VRMS
¥ Adjustable tracking range Ð ±1% to ±80%
¥ Excellent temperature stability Ð 20 ppm/°C typical
Applications
¥ FSK demodulation
¥ Data synchronization
¥ Tone decoding
¥ FM detection
¥ 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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Rev. 1.0.1

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