MICRF008

The MICRF008 QwikRadio™ UHF receiver is a single-chip OOK (on-off keyed) receiver IC designed for remote wireless applications. This device is a true single-chip, "antenna-in, data-out" device, and it is easy to implement. MICRF008 receiver requires very few peripheral passive components. All tunings, RF and IF, are accomplished within the IC. Ease of use and minimal parts count translate to cost savings and shorter time to market. MICRF008 receiver offers a robust and low-cost solution for high volume wireless applications.

The MICRF008 sweeps the internal local oscillator at rates greater than the baseband data rate. This effectively broadens the RF bandwidth of the receiver to a value equivalent to conventional superregenerative receivers. This allows the MICRF008 to operate with less expensive LC transmitters without additional components or tuning, even though the receiver topology is still superheterodyne. In this mode the reference crystal can be replaced with a less expensive ±0.5% ceramic resonator.

Since all post-detection (demodulator) data filtering is provided on the MICRF008, no external IF filters are required. One of the two internal filter bandwidths must be externally selected based on data rate and code modulation format.