MICRF230 Datasheet | Micrel Semiconductor

400MHz to 450MHz ASK/OOK Receiver with RSSI and Squelch General Description The MICRF230 is a 400MHz to 450MHz superheterodyne, 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 ponents to implement. The MICRF230 is ideal for low-cost, low-power, RKE, TPMS, and remote actuation applications. The MICRF230 achieves - 112d Bm sensitivity at a bit rate of 1kbps with 1% BER. Four demodulator filter bandwidths are selectable using SEL0 and SEL1 from 1625Hz to 13k 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 MICRF230 has a shutdown mode that reduces current to 0.5µA. The squelch feature decreases the activity on the data output pin until valid bits are detected while maintaining overall receiver sensitivity. Datasheets and support documentation are available on Micrel’s web site at: .micrel.. Features - - 112d Bm sensitivity at 1kbps with 1% BER - 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 - 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 RFID - Remote fan and light control - Garage door and gate openers - Remote metering - Low data rate unidirectional wireless data links Typical Application MICRF230 Typical Application Circuit for 433.92MHz Micrel Inc. - 2180 Fortune...