MICRF219 Datasheet | Micrel Semiconductor

.. 300MHz to 450MHz ASK Receiver with RSSI, Auto-Poll, Bit-Check and Squelch General Description Features The MICRF219 is a 300MHz to 450MHz super- - 110d Bm sensitivity at 1kbps with BER 10E-02 heterodyne, image-reject, RF receiver with Automatic - Supports data rates up to 10kbps at 433.92MHz Gain Control, OOK/ASK demodulator and analog RSSI - 25d B Image-Reject Mixer output. The device integrates Auto-Poll, Valid Bit-Check, - No IF Filter Required Squelch and Desense Features . It only requires a crystal - 60d B Analog RSSI Output and a minimum number of external ponents to implement. It is ideal for low-cost, low-power, RKE, - 3.0V to 3.6V Supply Voltage Range TPMS, and remote actuation applications. - 4.0m A supply current at 315MHz (continuous receive) The MICRF219 achieves -110d Bm sensitivity at a data - 6.0m A supply current at 434MHz (continuous receive) rate of 1kbps (Manchester encoded). Four demodulator - 0.5u A supply current in Shutdown Mode filter bandwidths are selectable in binary steps from - Optional Auto-Polling (sleep mode, current < 0.1m A) 1625Hz to 13k Hz at 433MHz, allowing the device to support data rates to 10kbps. The device operates from - Optional Valid Bit-Check in Auto-Poll Mode a supply voltage of 3.0V to 3.6V, and consumes 4.0m A - Optional Programmable 6d B to 42d B Desense of supply current at 315MHz and 6.0m A at 433.92MHz. - Optional Data Output Squelch until valid bits detected A shutdown mode reduces supply current to 0.5u A. The - 16-pin QSOP Package (4.9mm x 6.0mm) Auto-Polling feature allows the MICRF219 to sleep and poll for user defined periods, thus further reducing - -40˚C to +105˚C Temperature Range supply current. The Valid Bit-Check feature, when - 2k V HBM ESD Rating enabled in Auto-Poll mode, fully awakes the receiver - Evaluation board QR219BPF Available and sends bits to the microcontroller once a valid number of bits are detected. During normal operation an Ordering Information optional...