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RV2211N Datasheet

  • RV2211N

  • FSK Demodulator/Tone Decoder

  • 16頁

  • ETC

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Electronics
Semiconductor Division
RC2211
FSK Demodulator/Tone Decoder
Features
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Wide frequency range 脨 0.01 Hz to 300 kHz
Wide supply voltage range 脨 4.5V to 20V
DTL/TTL/ECL logic compatibility
FSK demodulation with carrier-detector
Wide dynamic range 脨 2 mV to 3 V
RMS
Adjustable tracking range 脨
鹵
1% to
鹵
80%
Excellent temperature stability 脨 20 ppm/
擄
C typical
Applications
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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
Loop Filter
f-Detector
FSK
Comparator
VCO
f
Preamp
Lock
Detector
Outputs
Lock
Detector
Filter
Lock
Detector
Comparator
65-2211-01
Data Filter
FSK
Data
Output
f
FSK
Input
f-Detector
Rev. 1.0.1
This document was created with FrameMaker 4 0 4

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