TDA5255E1_07 Datasheet, PDF (64/91 Pages) Infineon Technologies AG – ASK/FSK 434MHz Wireless Transceiver

TDA5255 E1
Version 1.2
Application
SLC_PkD.wmf
Figure 3-26 Slicer Level using Peak Detector
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.
τ _posPkD = 100 k Ω ⋅ C _p
[3 – 32]
Signal
τ _negPkD = 100 k Ω ⋅ C _n
[3 – 33]
Signal
τ_posPkD
Pos. Peak Detector (pin13)
τ _negPkD
Figure 3-27 Peak Detector timing
Data Sheet
64
Threshold SLC(pin14)
Neg. Peak Detector (pin12)
t
PkD_timing.wmf
2007-02-26