tda5251f1 Infineon Technologies Corporation, tda5251f1 Datasheet - Page 63
tda5251f1
Manufacturer Part Number
tda5251f1
Description
Ask/fsk 315mhz Wireless Transceiver
Manufacturer
Infineon Technologies Corporation
Datasheet
1.TDA5251F1.pdf
(88 pages)
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Figure 3-24
For applications requiring fast attack and slow release from the threshold value it is reasonable to
use the peak detectors. The threshold value is generated by an internal voltage divider. The release
time is defined by the internal resistance values and the external capacitors.
Figure 3-25
Preliminary Specification
Signal
Slicer Level using Peak Detector
Peak Detector timing
Data
Filter
Signal
Signal
t
t
100k
negPkD
Detector
Detector
R
+ Peak
negPkD
Slicer Threshold
posPkD
- Peak
+
-
DataSlicer
= 100
= 100
63
k
R1
R2
k
W
Contr.
Logic
W
100k
100k
×
C
×
t
Vcc
C
p
posPkD
DATA
PDP
13
SLC
14
PDN
12
28
n
Vcc
Pos. Peak Detector (pin13)
Neg. Peak Detector (pin12)
Threshold SLC(pin14)
C
C
P
N
t
TDA5251 F1
Version 1.0
Application
2003-02-18
PkD_timing.wmf
[3 – 32]
[3 – 33]
SLC_PkD.wmf
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