参数资料
型号: XR2211ACD-F
厂商: Exar Corporation
文件页数: 10/24页
文件大小: 0K
描述: IC FSK DEMOD/TONE DECOD 14SOIC
标准包装: 56
功能: FSK 解调器,音频解码器
电源电压: 4.5 V ~ 20 V
电流 - 电源: 5mA
功率(瓦特): 900mW
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOIC
包装: 管件
包括: 载波检测
其它名称: 1016-1308-5
XR-2211A
18
Rev. 1.04
Linear FM Detection
XR-2211A can be used as a linear FM detector for a wide
range
of
analog
communications
and
telemetry
applications. The recommended circuit connection for
this application is shown in
Figure 13. The demodulated
output is taken from the loop phase detector output (pin
11), through a post-detection filter made up of RF and CF,
and an external buffer amplifier. This buffer amplifier is
necessary because of the high impedance output at pin
11. Normally, a non-inverting unity gain op amp can be
used as a buffer amplifier, as shown in
Figure 13.
The FM detector gain, i.e., the output voltage change per
unit of FM deviation can be given as:
V
OUT +
R
1VREF
100
R
0
where VR is the internal reference voltage (VREF = VCC /2
- 650mV). For the choice of external components R1, R0,
CD, C1 and CF, see the section on design equations.
Capacitor
6
Input
5
7
Resistor
V+
Figure 14. Equivalent Schematic Diagram
20K
Internal Voltage
Reference
Input Preamplifier
and Limiter
10K
Quadrature
Phase Detector
Lock
Detect
Filter
Lock Detect
Outputs
Lock Detect
Comparator
FSK
Data
Output
FSK
Comparator
Input
Loop
Detector
Output
A
From
VCO
2K
A’
Loop Phase Detector
8K
12
R0
Timing
13
B
B’
C0 14
Voltage Controlled
Oscillator
REF
Voltage
Output
10
2
B
From
VCO
B’
3
2K
A
1
4
Ground
FSK Comparator
8
11
A’
Timing
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XR-2211ACP 制造商:EXAR 制造商全称:EXAR 功能描述:FSK Demodulator/ Tone Decoder
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XR2211ACP-F 制造商:Exar Corporation 功能描述:IC DEMODULATOR/DECODER FSK 2211