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參數資料
| 型號： | RM2211D |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | FSK Demodulator/Tone Decoder |
| 中文描述： | FSK解調器/音頻解碼器 |
| 文件頁數： | 1/16頁 |
| 文件大?。?/td> | 135K |
| 代理商： | RM2211D |
Electronics
Semiconductor Division
Features
￥ Wide frequency range D 0.01 Hz to 300 kHz
￥ Wide supply voltage range D 4.5V to 20V
￥ DTL/TTL/ECL logic compatibility
￥ FSK demodulation with carrier-detector
￥ Wide dynamic range D 2 mV to 3 V
￥ Adjustable tracking range D
￥ Excellent temperature stability D 20 ppm/
RMS
±
80%
±
1% to
°
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
65-2211-01
f
-Detector
Loop Filter
VCO
f
f
FSK
Input
Preamp
Data Filter
FSK
Data
Output
FSK
Comparator
Lock
Detector
Outputs
Lock
Detector
Comparator
Lock
Detector
Filter
f
-Detector
RC2211
FS K Demodulator/Tone Dec oder
Rev. 1.0.1
This document was created with FrameMaker 4 0 4
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