tda5100a Infineon Technologies Corporation, tda5100a Datasheet - Page 6

• Manufacturer Part Number: tda5100a
• Description: Ask Transmitter 434 Mhz
• Manufacturer: Infineon Technologies Corporation

Wireless Components
2.1 Overview
2.2 Applications
2.3 Features
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.






























Keyless entry systems
Remote control systems
Alarm systems
Communication systems
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
2 - 2
Specification, March 2001
Product Description
TDA 5100A
preliminary