MICRF104BM
MICRF104BM Datasheet
MICRF104
| Part | Datasheet |
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MICRF104BM |
MICRF104BM (pdf) |
| Related Parts | Information |
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MICRF104BM TR |
MICRF104BM TR |
| PDF Datasheet Preview |
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| MICRF104 Micrel MICRF104 1.8V, QwikRadio UHF ASK Transmitter Final Information The MICRF104 is a low voltage Transmitter IC for remote wireless applications. The device employs Micrel’s latest QwikRadio technology. This device is a true “data-in, antenna-out” 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. The MICRF104 incorporates a DC/DC converter to boost the input voltage up to 5V for the RF portion of the IC. This feature enables the MICRF104 to operate off supply voltages as low as 1.8V and transmit at power in excess of The MICRF104 uses a novel architecture where the external loop antenna is tuned to the internal UHF synthesizer. This transmitter is designed to comply worldwide UHF unlicensed band intentional radiator 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 from 100 to 20k bits per second. The automatic tuning in conjunction with the external resistor, insures that the transmitter output power stays constant for the life of the battery. When coupled with Micrel’s family of QwikRadio receivers, the MICRF104 provides the lowest cost and most reliable remote actuator and RF link system available. • Complete UHF transmitter on a chip • Frequency range 300MHz to 470MHz • Data rates to 20kbps • Automatic antenna alignment, no manual adjustment • Low external part count • Remote Keyless Entry Systems RKE • Remote Fan/Light Control • Garage Door Opener Transmitters • Remote Sensor Data Links Ordering Information Part Number MICRF104BM Temperature Range 0°C to +85°C Package 14-Pin SOIC 1.8V to 4V Supply 10µF RF Standby L1 22µH MICRF104 1 VDDPWR EN 14 2 VSS 5V 4 VSS 5 REFOSC 6 RFSTBY 7 ANTM VSS 13 SW PC 11 Power Control 0.1µF 100pF 10µF VDDRF ANTP 8 DATA IN LOOP ANTENNA PCB TRACE Figure 1 QwikRadio is a trademark of Micrel, Inc. The QwikRadio ICs were developed under a partnership agreement with AIT of orlando, Florida Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 408 944-0800 • fax + 1 408 944-0970 • November 8, 2001 MICRF104 MICRF104 Pin Configuration VDDPWR 1 VSS 2 5V 3 VSS 4 REFOSC 5 RFSTBY 6 ANTM 7 14 EN 13 VSS 12 SW 11 PC 10 VDDRF 9 ASK 8 ANTP MICRF104BM Micrel Pin Description Pin Number 1 2, 4, 13 3 5 7 8 9 10 |
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