TDA5252XT Infineon Technologies, TDA5252XT Datasheet - Page 51
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TDA5252XT
Manufacturer Part Number
TDA5252XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.TDA5252XT.pdf
(86 pages)
Specifications of TDA5252XT
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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Figure 3-14
In receive mode the crystal oscillator frequency is set to yield a direct-to-zero conversion of the
receive data. Thus the frequency may be calculated as
e.g.
which is identical to the ASK transmit case.
Figure 3-15
In this case the ASK-switch is closed. The necessary C
Data Sheet
C
C
V1
V2
C
f, C
V3
f
f
COSC
COSC
L
FSK modulation
FSK receive
XSWA 22
XOUT 19
XSWF 20
XGND 23
XIN 21
= f
= 915E6 / 48 = 19.0625MHz
RF
FSK LOW
/ 48,
L
C
C
V1
V2
C
f, C
V3
C
C
-R
L
tune2
tune1
XSWA 22
XOUT 19
XSWF 20
XGND 23
XIN 21
51
L
C
C
V1
V2
vm
-R
C
f, C
V3
is given by:
L
C
C
tune2
tune1
XSWA 22
XOUT 19
XSWF 20
XGND 23
XIN 21
FSK HIGH
L
[3 – 22]
C
C
-R
tune2
tune1
TDA5252 G2
Version 1.1
Application
2007-02-26
QOSC_ASK.wmf
QOSC_FSK.wmf
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