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參數(shù)資料
| 型號： | XR2211ACP-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 2/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FSK DEMOD/TONE DECOD 14PDIP |
| 標準包裝： | 25 |
| 功能： | FSK 解調器，音頻解碼器 |
| 電源電壓： | 4.5 V ~ 20 V |
| 電流 - 電源： | 5mA |
| 功率（瓦特）： | 900mW |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 14-DIP（0.300"，7.62mm） |
| 供應商設備封裝： | 14-PDIP |
| 包裝： | 管件 |
| 包括： | 載波檢測 |
| 其它名稱： | 1016-1309-5 |
XR-2211A
10
Rev. 1.04
APPLICATIONS INFORMATION
FSK Decoding
Figure 10 shows the basic circuit connection for FSK decoding. With reference to Figure 3 and Figure 10, the functions
of external components are defined as follows: R0 and C0 set the PLL center frequency, R1 sets the system bandwidth,
and C1 sets the loop filter time constant and the loop damping factor. CF and RF form a one-pole post-detection filter for
the FSK data output. The resistor RB from pin 7 to pin 8 introduces positive feedback across the FSK comparator to
facilitate rapid transition between output logic states.
Design Instructions:
The circuit of
Figure 10 can be tailored for any FSK decoding application by the choice of five key circuit components: R0,
R1, C0, C1 and CF. For a given set of FSK mark and space frequencies, fO and f1, these parameters can be calculated as
follows:
(All resistance in
W’s, all frequency in Hz and all capacitance in farads, unless otherwise specified)
a) Calculate PLL center frequency, fO:
f
O +
F
1F2
b) Choose value of timing resistor R0, to be in the range of 10KW to 100KW. This choice is arbitrary. The recommended
value is R0 = 20KW. The final value of R0 is normally fine-tuned with the series potentiometer, RX.
R
O + RO )
R
X
2
c)
Calculate value of C0 from design equation (1) or from
Figure 7:
C
O +
1
R
0 f0
d) Calculate R1 to give the desired tracking bandwidth (See design equation 5).
R
1
+
R
0f0
(
f
1–f2)
2
e) Calculate C1 to set loop damping. (See design equation 4):
Normally,
j = 0.5 is recommended.
C
1
+
1250
C
0
R
1
j2
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XR2211ACP-F | 制造商:Exar Corporation 功能描述:IC DEMODULATOR/DECODER FSK 2211 |
| XR2211ACP-F | 制造商:Exar Corporation 功能描述:FSK Demodulator/ Tone Decoder IC |
| XR-2211CN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ASK/FSK Demodulator |
| XR2211CP | 制造商:EXAR 制造商全稱:EXAR 功能描述: |
| XR-2211CP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ASK/FSK Demodulator |
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