TDA5101 Datasheet PDF - Infineon

General Description

●The TDA5101A is a single chip ASK transmitter for the frequency band 315 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 live. Additionally features like a power down mode, a low power detect and a divided clock output are implemented.

●Features

●■ fully integrated frequency synthesizer

●■ VCO without external components

●■ high efficiency power amplifier

●■ frequency range 315 MHz

●■ ASK modulation

●■ low supply current (typically < 7mA)

●■ voltage supply range 2.1 - 4 V

●■ power down mode

●■ low voltage sensor

●■ low external component count

●Applications

●■ Keyless entry systems

●■ Remote control systems

●■ Alarm systems

●■ Communication systems