MICRF229 Datasheet | Micrel Semiconductor

400MHz to 450MHz ASK/OOK Receiver with Auto-Poll and RSSI General Description The MICRF229 is a 400MHz to 450MHz superheterodyne, image-reject, RF receiver with automatic gain control, ASK/OOK demodulator, and analog RSSI output. It only requires a crystal and a minimum number of external ponents to implement. The MICRF229 is ideal for low-cost, low-power, RKE, TPMS, and remote actuation applications. The MICRF229 achieves - 112d Bm sensitivity at a bit rate of 1kbps with 1% BER. Eight demodulator filter bandwidths are selectable in binary steps from 1625Hz to 34k Hz at 433.92MHz, allowing the device to support bit rates up to 20kbps. The device operates from a supply voltage of 3.5V to 5.5V, and typically consumes 6.0m A at 433.92MHz. The MICRF229 has a shutdown mode and sleep mode that reduce current to 0.5μA and 15μA respectively. Datasheets and support documentation are available on Micrel’s web site at: .micrel.. Features - - 112d Bm sensitivity at 1kbps with 1% BER - Auto-polling mode with bit checking - Supports bit rates up to 20kbps at 433.92MHz - 25d B image-reject mixer - No IF filter required - 60d B analog RSSI output range - 3.5V to 5.5V supply voltage range - 6.0m A supply current at 434MHz - 15μA supply current in sleep mode - 0.5μA supply current in shutdown mode - 16-pin 4.9mm × 6.0mm QSOP package - - 40C to +105C temperature range - 2k V HBM ESD rating Applications - Automotive remote keyless entry (RKE) - Long-range RF ID - Remote fan/light control - Garage door/gate openers - Remote metering - Low data rate unidirectional wireless data links Typical Application MICRF229 433.92MHz Typical Application Circuit Micrel...