The IC is a very low power consumption single chip FSK/ASK Superheterodyne Receiver (SHR) for receive frequencies between 902 and 928 MHz that is pin compatible to the ASK Receiver TDA5202. 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.
●Features
●■ Low supply current (Is = 5.4 mA typ.FSK mode, 4.8 mA typ. ASK mode)
●■ Supply voltage range 5V ±10%
●■ Power down mode with very low supply current (90nA typ.)
●■ FSK and ASK demodulation capability
●■ Fully integrated VCO and PLL Synthesiser
●■ RF input sensitivity ASK -112dBm typ. at 25°C, better than -109dBm over complete specified operating temperature range (-40 to +85°C)
●■ RF input sensitivity FSK -105dBm typ. at 25°C, better than -102dBm over complete specified operating temperature range (-40 to +85°C)
●■ Receive frequency range between 902 and 928 MHz
●■ Selectable reference frequency
●■ Limiter with RSSI generation, operating at 10.7MHz
●■ 2nd order low pass data filter with external capacitors
●■ Data slicer with self-adjusting threshold
●Application
●■ Keyless Entry Systems
●■ Remote Control Systems
●■ Low Bitrate ISM-band Communication Systems
