TDA5211 Datasheet

RF Receiver


The TDA5211 is a very low power consumption single chip FSK/ASK Superheterodyne Receiver (SHR) for the frequency band 310 to 350 MHz that is pin compatible with the ASK Receiver TDA5211. The IC offers a high level of integration and needs only a few external components. The device contains a low noise amplifier (LNA), a double balanced mixer, a fully integrated VCO, a PLL synthesiser, a crystal oscillator, a limiter with RSSI generator, a PLL FSK demodulator, a data filter, a data comparator (slicer) and a peak detector. Additionally there is a power down feature to save battery life. TDA5211 Features • Low supply current (Is = 5.7 mA typ. in FSK mode, Is = 5 mA typ. in ASK mode)• Supply voltage range 5V ±10%• Power down mode with very low supply current (50nA typ.)• FSK and ASK demodulation capability• Fully integrated VCO and PLL Synthesiser• ASK sensitivity better than -110 dBm over specified temperature range (- 40 to +105°C)• Selectable frequency ranges 310-330 MHz and 330-350 MHz• Limiter with RSSI generation, operating at 10.7MHz• Selectable reference frequency• 2nd order low pass data filter with external capacitors• Data slicer with self-adjusting threshold• FSK sensitivity better than -102 dBm over specified temperature range (- 40 to +105°C) TDA5211 Applications • Keyless Entry Systems• Remote Control Systems• Alarm Systems• Low Bitrate Communication Systems


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