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