TDA5101A Datasheet, PDF (15/21 Pages) Infineon Technologies AG – ASK Transmitter 315 MHz

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TDA 5101A
Preliminary
Functional Description
6. Power Down Mode
In the POWER DOWN MODE the current consumption is less than 100nA. To
switch the IC in this mode, the input pin PDWN (pin1) has to be in the low
state.
7. PLL Enable Mode
The turn on time of the circuit is determined by the turn on time of the crystal
oscillator and is typically less than 1 msec (dependent on the crystal itself). To
save current consumption and to avoid undesired power radiation during this
time, the power amplifier is turned off. The current consumption at this mode is
typically 3.5 mA.
8. Transmit Enable Mode
In the TRANSMIT ENABLE MODE the power amplifier is turned on too, and
the current consumption of the IC is about 7 mA. To get in this state, the DTA
input is to switch to a high level.
Semiconductor Group
3-7
Specification, May 1999