TDA5220

ASK / FSK单一转换接收器 ASK/FSK Single Conversion Receiver

Description:

The IC is a very low power consumption single chip FSK/ASK Superheterodyne Receiver SHR for the frequency bands 810 to 870 MHz and 400 to 440 MHz. 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, an advanced data comparator slicer with selection between two threshold modes and a peak detector. Additionally there is a power down feature to save current and extend battery life, and two selectable alternatives of generating the data slicer threshold.

Summary of Features:

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 Low supply current Is = 5.7/5.9 mA typ. in FSK mode, Is = 5.0/5.2 mA typ. in ASK mode for 434/868 MHz

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 Supply voltage range 5V ±10%

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 Power down mode with very low supply current 50nA typ.

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 FSK and ASK demodulation capability

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Fully integrated VCO and PLL Synthesiser

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ASK sensitivity better than -106 dBm over specified temperature range - 40 to +105°C

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 FSK sensitivity better than -100 dBm over specified temperature range - 40 to +105°C

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 Selectable frequency ranges 810-870 MHz and 400-440 MHz

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Limiter with RSSI generation, operating at 10.7MHz

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2nd order low pass data filter with external capacitors

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 Data slicer with selection between two threshold modes