MICRF103BM

MICRF103 Micrel MICRF103 QwikRadio™ UHF ASK Transmitter Final General Description Features The MICRF103 is a single chip Transmitter IC for remote wireless applications. The device employs Micrel’s latest QwikRadio™ technology. This device is a true ”data-in, antenna-out” monolithic device. All antenna tuning is accomplished automatically within the IC which eliminates manual tuning, and reduces production costs. The result is a highly reliable yet extremely low cost solution for high volume wireless applications. Because the MICRF103 is a true single-chip radio transmitter, it is easy to apply, minimizing design and production costs, and improving time to market. The MICRF103 uses a novel architecture where the external antenna is tuned by the internal UHF synthesizer. This transmitter is designed to comply worldwide UHF unlicensed band international radio regulations. The IC is compatible with virtually all 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. The transmitter is designed to work with transmitter data rates up to 115k bits per second. The automatic tuning in conjunction with an external resistor, insures that the transmitter output power stays constant at maximum regulatory transmit power limits for the life of the battery. When coupled with Micrel’s family of QwikRadio™ receivers, the MICRF103 provides the lowest cost and most reliable remote actuator and RF link system available. • • • • • • Complete UHF transmitter on a monolithic chip Frequency range 800MHz to 1GHz Data rates to 115kbps Automatic antenna alignment, no manual adjustment Low external part count Low standby current