Strengthening the link between the real and the digital worldTDA5211
Overview
The IC 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 TDA5201. 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.
Summary of 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)
Potential Applications
- Keyless Entry Systems
- Remote Control Systems
- Alarm Systems
- Low Bitrate Communication Systems
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