TDA7100 Datasheet, PDF (11/41 Pages) Infineon Technologies AG – 434 MHz ASK/FSK Transmitter in 10-pin Package

TDA7100
Functional Description
Pin Symbol
No.
8 PAGND
9 PAOUT
10 PDWN
Interface Schematic
Function
Ground connection of the power
amplifier.
9 _{The RF ground return path of the}
power amplifier output PAOUT
(pin 9) has to be concentrated to
this pin.
RF output pin of the transmitter.
8 _{A DC path to the positive supply}
VS has to be supplied by the
antenna matching network.
Disable pin for the complete
V_S
transmitter circuit.
40 µA ∗ (ASKDTA+FSKDTA) _{A logic low (PDWN < 0.7 V) turns}
off all transmitter functions.
5 kΩ
10
A logic high (PDWN > 1.5 V) gives
"ON" _{access to all transmitter functions.}
150 kΩ
250 kΩ
PDWN input will be pulled up by
40 µA internally by either setting
FSKDTA or ASKDTA to a logic
high-state.
1) Indicated voltages and currents apply for PLL Enable Mode and Transmit Mode.
In Power Down Mode, the values are zero or high-ohmic.
Data Sheet
11
V 1.0, 2007-05-02