something of TDK5110

The TDK5110 is a single chip ASK/
FSK transmitter for the frequency
bands 868-870 MHz and 433-435
MHz. The IC offers a high level of integration
and needs only a few external
components. The device contains a
fully integrated PLL synthesizer and a
high efficiency power amplifier to drive
a loop antenna. A special circuit design
and an unique power amplifier design
are used to save current consumption
and therefore to save battery life. Additionally
features like a power down
mode, a low power detect, a selectable
crystal oscillator frequency and a
divided clock output are implemented.
The IC can be used for both ASK and
FSK modulation.
TDK5110'S Features:
fully integrated frequency synthesizer

VCO without external components

high efficiency power amplifier
typically 10 dBm @ 3 V

switchable frequency range
868-870/433-435 MHz

ASK/FSK modulation

low supply current typ. 13 mA@3V

voltage supply range 2.1 - 4 V

power down mode

low voltage sensor

selectable crystal oscillator
6.78 MHz/13.56 MHz

programmable divided clock output
for μC

low external component count
TDK5110'S Applications:
Keyless entry systems

Remote control systems

Alarm systems

Communication systems