參數(shù)資料
型號(hào): TDA5210
廠商: INFINEON TECHNOLOGIES AG
英文描述: ASK/FSK Single Conversion Receiver
中文描述: 詢價(jià)/ FSK信號(hào)單一轉(zhuǎn)換接收器
文件頁數(shù): 28/53頁
文件大?。?/td> 1483K
代理商: TDA5210
Applications
4 - 7
TDA 5210
Wireless Components
Specification, May 2001
4.5 Data Slicer Threshold Generation
The threshold of the data slicer can be generated using an external R-C inte-
grator as shown in Figure 4-5. The cut-off frequency of the R-C integrator has
to be lower than the lowest frequency appearing in the data signal. In order to
keep distortion low, the minimum value for R is 20k
.
Data_slice1.wmf
Figure 4-5
Data Slicer Threshold Generation with External R-C Integrator
In case of ASK operation another possibility for threshold generation is to use
the peak detector in connection with two resistors and one capacitor as shown
in the following figure. The component values are depending on the coding
scheme and the protocol used.
Data_slice2.wmf
Figure 4-6
Data Slicer Threshold Generation Utilising the Peak Detector
Pins:
20
19
R
C
25
data out
U
threshold
data slicer
data
filter
Pins:
20
19
25
data out
U
threshold
data slicer
data
filter
26
peak detector
C
R
R
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