TDK5100F_08 INFINEON [Infineon Technologies AG], TDK5100F_08 Datasheet - Page 26
![no-image](/images/no-image-200.jpg)
TDK5100F_08
Manufacturer Part Number
TDK5100F_08
Description
434 MHz ASK/FSK Transmitter in 10-pin Package
Manufacturer
INFINEON [Infineon Technologies AG]
Datasheet
1.TDK5100F_08.pdf
(39 pages)
- Current page: 26 of 39
- Download datasheet (2Mb)
Example for the FSK-Mode:
FSK modulation is achieved by switching the load capacitance of the crystal as shown
below.
Figure 15
The frequency deviation of the crystal oscillator is multiplied with the divider factor N of
the Phase Locked Loop to the output of the power amplifier. In case of small frequency
deviations (up to +/- 1000 ppm), the two desired load capacitances can be calculated
with the formula below.
C
C
f:
ω:
N:
df:
Because of the inductive part of the TDK 5100 F, these values must be corrected by
Formula 1 on the preceding page.
Data Sheet
L
0
:
:
crystal load capacitance for nominal frequency
shunt capacitance of the crystal
frequency
ω = 2
division ratio of the PLL
peak frequency deviation
FSK Mode
π
f: angular frequency
-R
CL
±
=
FSKDTA
Csw
CL
L
IC
1
m
±
C
N
0
∆
*
N
f
f
∆
FSKOUT
COSC
*
26
1
f
1 (
f
1
+
1 (
( 2
+
f, CL Cv1
C
( 2
0
C
C
+
1
0
C
CL
+
1
CL
)
)
)
)
Cv2
V 1.2, 2008-04-04
Applications
TDK5100F
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