TDA 5102
Product Description
2.1 Overview
The TDA 5102 is a single chip ASK/FSK transmitter for the frequency band 905-
925 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 frequency and a divided clock out-
put are implemented. The IC can be used for both ASK and FSK modulation.
2.2 Applications
I Keyless entry systems
I Remote control systems
I Alarm systems
I Communication systems
2.3 Features
I fully integrated frequency synthesizer
I VCO without external components
I high efficiency power amplifier
I frequency range 905-925 MHz
I ASK/FSK modulation
I low supply current (typically 7 mA)
I voltage supply range 2.1 - 4 V
I power down mode
I low voltage sensor
I selectable crystal oscillator 7.15 MHz/14.3 MHz
I programmable divided clock output for µC
I low external component count
Wireless Components
2 - 2
Specification, October 2001
INFINEON [ Infineon ]
