TDA5100A Datasheet, PDF (6/29 Pages) Infineon Technologies AG – ASK Transmitter 434 MHz

TDA 5100A
preliminary
Product Description
2.1 Overview
The TDA 5100A is a single chip ASK transmitter for the frequency band 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. Additional features like a power down mode, a low
power detect and a divided clock output are implemented.
2.2 Applications

Keyless entry systems

Remote control systems

Alarm systems

Communication systems
2.3 Features

fully integrated frequency synthesizer

VCO without external components

high efficiency power amplifier

frequency range 433-435 MHz

ASK modulation

low supply current (typically 7 mA)

voltage supply range 2.1 - 4 V

power down mode

low voltage sensor

clock output for µC

low external component count
Wireless Components
2-2
Specification, March 2001