Microchip | MICRF112YMM-TR

Micrel's QwikRadio® products are a family of ASK/OOK (amplitude shift keyed/on-off-keyed), highly integrated single-chip RF ICs.

The receivers are true "antenna-in, data-out" devices and the transmitter is an equivalent "data-in, antenna-out" part. Both the transmitter and receivers require no hand-tweaking with trimmer capacitors, as all tuning is performed automatically on-board the devices.

QwikRadio® offers the lowest overall parts-count of any ASK/OOK receivers and transmitters on the market. They are ideal for applications with ranges below 300 feet and data rates below 10Kbps, like handheld controllers and keyFOBs.  For longer ranges and higher data rates, check out our RadioWire ® products.

The MICRF112 is a high performance, easy to use, single chip ASK/FSK transmitter IC for remote wireless applications in the 300 to 450MHz frequency band. This transmitter IC is a true “data-in, antenna-out” monolithic device.

MICRF112 is high performance in three areas: power delivery, operating voltage, and operating temperature. In terms of power, the MICRF112 is capable of delivering +10 dBm into a 50Ω load. This power level enables a small form factor transmitter (lossy antenna) such as a key fob transmitter to operate near the maximum limit of transmission regulations. In terms of operating voltage, the MICRF112 operates from 3.6V to 1.8V. The MICRF112 will work with most batteries to the end of their useful limits.

The MICRF112 is easy to use. One only needs a reference frequency (RF carrier frequency divided by 32 times) generated from a crystal with a few additional external parts, to create a complete versatile transmitter.

The MICRF112 operates with ASK/OOK (Amplitude Shift Keying/On-Off Keyed) UHF receiver types from wide-band super-regenerative radios to narrow-band, high performance super-heterodyne receivers.