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TDA5103A Datasheet(PDF) 11 Page - Infineon Technologies AG

Part No. TDA5103A
Description  ASK Transmitter 345 MHz
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Maker  INFINEON [Infineon Technologies AG]
Homepage  http://www.infineon.com
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 11 page
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Functional Description
3 - 4
TDA 5103A
preliminary
Wireless Components
Specification, March 2001
5
DATA
Digital amplitude modulation can be
imparted to the Power Amplifier through this
pin.
A logic high (DATA > 1.5 V or open) enables
the Power Amplifier.
A logic low (DATA < 0.5 V)
disables the Power Amplifier.
6
CLKOUT
Clock output to supply an external device.
An external pull-up resistor has to be added
in accordance to the driving requirements of
the external device.
The clock output frequency is 2.7 MHz when
a crystal of 10.78 MHz is used.
7
COSC
This pin is connected to the reference oscil-
lator circuit.
The reference oscillator is working as a neg-
ative impedance converter. It presents a
negative resistance in series to an induc-
tance at the COSC pin.
The resonance frequency of the crystal
should be 10.78 MHz to achieve an output
frequency of 345 MHz.
+ 1 .2 V
90 k
Ω
5
50 pF
30
A
60 k
Ω
+1 .1 V
6
300
Ω
6 k

7
100
A
V
S




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