RF receiver IC
From WikiCover
On June 4, 2007, Micrel launched the MICRF213, the newest member of the Company's QwikRadio RF receiver IC family. The new family of ICs features enhanced sensitivity and selectivity, and continues to lead the industry in distance performance. The MICRF213 is a general purpose, 3.3V QwikRadio receiver operating in the 315MHz range. All of Micrel's QwikRadio RF receivers are designed to meet the rigorous cost and design cycle needs of quickly developing RF applications including telemetry, wireless sensing, environmental monitoring, consumer entertainment remotes, remote actuation and lighting control, remote keyless entry (RKE) and tire pressure monitoring systems (TPMS). The MICRF213 is currently available in volume, with pricing starting at $1.89 for 1,000-piece quantities.
The device's operating frequency band is from 300MHz to 350MHz. It offers designers a low current consumption of 3.9mA @ 315MHz. The MICRF213 features up to -110dBm sensitivity and functions as a super-heterodyne receiver for OOK and ASK modulation up to 7.2kbps @ 315 MHz operating frequency. The down- conversion mixer also provides image rejection to improve communication distance. All post-detection data filtering is built-in on the MICRF213. There are four filter bandwidths may be selected externally by the user in binary steps, from 1.18kHz to 9.44kHz @ 315 MHz operating frequency. The designer need only configure the device with a set of easily determined values, based upon data rate, code modulation format, and desired duty-cycle operation.