The MICRF219A is a 300MHz to 450MHz super-heterodyne, image-reject, RF receiver with automatic gain control, ASK/OOK demodulator, analog RSSI output, and integrated squelch features. It only requires a crystal and a minimum number of external components to implement. The MICRF219A is ideal for low-cost, low-power, RKE, TPMS, and remote actuation applications.<br /> <br /> The MICRF219A achieves -110dBm sensitivity at a bit rate of 1kbps with 0.1% BER. Four demodulator filter bandwidths are selectable in binary steps from 1625Hz to 13kHz at 433.92MHz, allowing the device to support bit rates up to 20kbps.<br /> <br /> The device operates from a supply voltage of 3.0V to 3.6V, and typically consumes 4.3mA of supply current at 315MHz and 6.0mA at 433.92MHz. A shutdown mode reduces supply current to 0.1µA typical. The squelch feature decreases the activity on the data output pin until valid bits are detected while maintaining overall receiver sensitivity.
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View full reportTechnical parameters
| Power | |
|---|---|
| Operating Voltage (V) Max | 3.6 |
| Operating Voltage (V) Min | 3 |
| RX Current Consumption (mA) | 4.3 |
| Sleep Mode Current Consumption (μA) | 0.1 |
| AC and DC characteristics | |
| Frequency Range | 300 to 450 |
| Environment and package | |
| Operating Temp (°C) Max | 105 |
| Operating Temp (°C) Min | -40 |
| Other | |
| Data Range (Kbps) Max | 20 |
| Host Interface | Demodulate d Output |
| Modulation | ASK/OOK |
| RX Sensitivity (dBm) | -110 |