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參數資料
| 型號： | XR-2211 |
| 廠商： | Exar Corporation |
| 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： | 17/24頁 |
| 文件大小： | 242K |
| 代理商： | XR-2211 |
XR-2211
17
Rev. 3.01
c)
Calculate R
1
to set the bandwidth + f (See design equation 5):
R
1
R
0
·f
O
·2
f
20,000·1,000·2
100
400K
Note:
The total detection bandwidth covers the frequency range of f
O
+ f
d)
Calculate value of C
0
for a given loop damping factor:
Normally, = 0.5 is recommended.
C
1
1250·C
0
R
1
·
2
1250·50·10
–9
400,000·0.5
2
6.25pF
Increasing C
1
improves the out-of-band signal rejection, but increases the PLL capture time.
e) Calculate value of the filter capacitor C
D
. To avoid chatter at the logic output, with R
D
= 470K , C
D
must be:
C
D
16
f
16
200
80nF
Increasing C
D
slows down the logic output response time.
f)
Fine tune center frequency with 5K potentiometer, R
X
.
0.1
μ
F
R
F
100K
V
CC
Loop
Phase
Detect
C
1
11
R
1
8
FSK
Comp
.
Internal
Reference
7
3
2
1
4
11
LM324
C
F
Output
Demodulated
6
LDOQ
0.1
μ
F
10
Lock
Detect
Comp.
VCO
14
13
12
R
0
C
0
2
0.1
μ
F
Input
FM
Quad
Phase
Detect
5
LDOQN
Figure 13. Linear FM Detector Using XR-2211 and an External Op Amp.
(See Section on Design Equation for Component Values.)
V
CC
+
+
+
相關PDF資料 |
PDF描述 |
|---|---|
| XR2211M | |
| XR2211N | |
| XR2211CP | |
| XR2211D | FSK Demodulator/Tone Decoder(242.76 k ) |
| XR2228 | Monolithic Multiplier/Detector |
相關代理商/技術參數 |
參數描述 |
|---|---|
| XR-2211A | 制造商:EXAR 制造商全稱:EXAR 功能描述:FSK Demodulator/ Tone Decoder |
| XR2211ACD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC |
| XR-2211ACD | 制造商:Exar Corporation 功能描述: |
| XR2211ACD-F | 功能描述:VCO振蕩器 4.5V-20V 5mA temp 0C to 70C RoHS:否 制造商:Exar 封裝 / 箱體:SOIC-14 頻率:300 kHz 負載電容: 封裝:Reel 電源電壓:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作溫度:0 C 最大工作溫度:+ 70 C |
| XR2211ACDTR-F | 功能描述:VCO振蕩器 RoHS:否 制造商:Exar 封裝 / 箱體:SOIC-14 頻率:300 kHz 負載電容: 封裝:Reel 電源電壓:4.5 V to 20 V 尺寸:4 mm W x 8.75 mm L x 1.75 mm H 最小工作溫度:0 C 最大工作溫度:+ 70 C |
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