TDA5251XT Infineon Technologies, TDA5251XT Datasheet - Page 64
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TDA5251XT
Manufacturer Part Number
TDA5251XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.TDA5251XT.pdf
(88 pages)
Specifications of TDA5251XT
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Product Depth (mm)
4.4mm
Product Length (mm)
9.7mm
Operating Supply Voltage (min)
2.1V
Operating Supply Voltage (max)
5.5V
Lead Free Status / Rohs Status
Compliant
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- Download datasheet (3Mb)
Component calculation: (rule of thumb)
3.6.3
The TDA5251 data output can be digital (pin 28) or in analog form by using the peak detector output
and changing some settings.
To get an analog data output the slicer must be set to lowpass mode (Reg. 0, D15 = LP = 0) and
the peak detector capacitor at pin 12 or 13 has to be changed to a resistor of about 47kOhm.
Figure 3-26
3.6.4
For a safe and fast threshold value generation the peak detector is turned on by the sequencer
circuit (see Section 2.4.18) only after the entire receiving path is active.
In the off state the output of the positive peak detector is tied down to GND and the output of the
negative peak detector is pulled up to VCC.
Data Sheet
C
C
P
n
≥
≥
2
100
100
2
*
*
T
T
k
k
L
L
Peak Detector - Analog output signal
Peak Detector – Power Down Mode
Ω
Ω
1
2
Peak Detector as analog Buffer (v=1)
T
L1
T
L2
– longest period of no signal change (LOW signal)
– longest period of no signal change (HIGH signal)
64
TDA5251 F1
Version 1.1
Application
[3 – 34]
[3 – 35]
2007-02-26
PkD_analog.wmf
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