TDA5210 View Datasheet(PDF) - Infineon Technologies

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Description

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TDA5210

ASK/FSK Single Conversion Receiver

Infineon Technologies 

TDA 5210

Applications

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 20kΩ.

R

C

Pins: 19

data

filter

20

Uthreshold

data out

25

data slicer

Figure 4-5

Data_slice1.wmf

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.

R

C

R

Pins: 26 19

peak detector

20

Uthreshold

data out

25

data slicer

data

filter

Figure 4-6

Data_slice2.wmf

Data Slicer Threshold Generation Utilising the Peak Detector

Wireless Components

4-7

Specification, May 2001

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