TDA7110 Datasheet, PDF (5/39 Pages) Infineon Technologies AG – ASK/FSK Transmitter 868/433 MHz

TDA7110
Product Description
1.1 Overview
The TDA7110 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. Additional features like
a power down mode, a low power detect, a selectable crystal oscillator fre-
quency and a divided clock output are implemented. The IC can be used for
both ASK and FSK modulation.
1.2 Applications
■ Keyless entry systems
■ Remote control systems
■ Alarm systems
■ Communication systems
1.3 Features
■ fully integrated frequency synthesizer
■ VCO without external components
■ high efficiency power amplifier typ. 10 dBm @ 3 V
■ switchable frequency range 868-870/433-435 MHz
■ ASK/FSK modulation
■ low supply current typ. 13 mA @ 3 V
■ 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
Wireless Components
1-2
Data Sheet, December 2008