TDA5103A

Überblick

TDA5103A - Transmitter with a high level of integration, only few external components are required

The TDA 5103A is a single chip ASK transmitter for the frequency band 344- 347 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. Additionally features like a power down mode, a low power detect and a divided clock output are implemented.

Zusammenfassung der Merkmale

  • Fully integrated frequency synthesizer
  • VCO without external components
  • High efficiency power amplifier
  • Frequency range 344-347 MHz
  • ASK modulation
  • Low supply current (typically 7mA)
  • Voltage supply range 2.1 - 4 V
  • Power down mode
  • Low voltage sensor
  • Clock output for μC
  • Low external component count

Potentielle Zielanwendungen


  • Remote Keyless Entry (RKE) systems
  • Remote control systems
  • Alarm systems
  • Communication systems
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