TDA7110 Datasheet, PDF (12/39 Pages) Infineon Technologies AG – ASK/FSK Transmitter 868/433 MHz

TDA7110
Functional Description
13 PAGND
14 PAOUT
Ground connection of the power amplifier.
The RF ground return path of the power
amplifier output PAOUT (pin 14) has to be
concentrated to this pin.
RF output pin of the transmitter.
14
A DC path to the positive supply VS has to
be supplied by the antenna matching net-
work.
13
15
FSEL
+1.2 V
30 kΩ
15
90 kΩ
This pin is used to select the desired trans-
mitter frequency.
A logic low (FSEL < 0.5 V) applied to this pin
sets the transmitter to the 433 MHz fre-
quency range.
+1.1 V
30 μA
A logic high (FSEL open) applied to this pin
sets the transmitter to the 868 MHz fre-
quency range.
16 CSEL
This pin is used to select the desired refer-
+1.2 V
V_S
ence frequency.
A logic low (CSEL < 0.2 V) applied to this pin
5 μA
sets the internal frequency divider to accept
60 kΩ
16
a reference frequency of 6.78 MHz.
60 kΩ
+0.8 V _{A logic high (CSEL open) applied to this pin}
sets the internal frequency divider to accept
a reference frequency of 13.56 MHz.
1) Indicated voltages and currents apply for PLL Enable Mode and Transmit Mode.
In Power Down Mode, the values are zero or high-ohmic.
Wireless Components
2-6
Data Sheet, December 2008