參數(shù)資料
型號(hào): XR-2211ACP
廠商: EXAR CORP
元件分類: 通信及網(wǎng)絡(luò)
英文描述: IC AM29LV040B TSOP I - 32PIN
中文描述: SPECIALTY TELECOM CIRCUIT, PDIP14
封裝: 0.300 INCH, PLASTIC, DIP-14
文件頁(yè)數(shù): 11/24頁(yè)
文件大?。?/td> 246K
代理商: XR-2211ACP
XR-2211A
11
Rev. 1.01
f)
The input to the XR-2211A may sometimes be too sensitive to noise conditions on the input line. Figure 4.illustrates
a method of de-sensitizing the XR-2211A from such noisy line conditions by the use of a resistor, Rx, connected
from pin 2 to ground. The value of Rx is chosen by the equation and the desired minimum signal threshold level.
V
IN
minimum (peak)
V
a
–V
b
V
2.8mV offset
V
REF
20,000
(20,000
R
X
)or R
X
20,000
V
REF
V
IN
minimum (peak) input voltage must exceed this value to be detected (equivalent to adjusting V threshold)
Vcc
Rx
Input
20K
Va
20K
To Phase
Detector
Vb
V
REF
Figure 4. Desensitizing Input Stage
g)
Calculate Data Filter Capacitance, C
F
:
R
sum
(R
F
(R
1
R
1
)·R
B
R
F
R
B
)
C
F
250
R
sum
·(Baud Rate)
Baud rate in
se1
Note:
All values except R
0
can be rounded to nearest standard value.
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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: