Chip introduction RF112C coding transmitter chip integrates RF SAW oscillator transmission circuit and 1527 coding, SOP14 patch package, the chip has 10 key transmission ports, no need to use 4148 to expand the key port of 1527 coding chip, RF112C each chip has a unique coding address, 1 million sets of coding are not repeated, users do not need to manually set the address. RF112C has internal SAW frequency stabilization, stable performance, and very small size. It does not require an external crystal oscillator. It can realize the existing 3356 high-frequency tube transmission circuit + SAW + coding chip solution. RF112C can reduce the size of user products and reduce user product costs. RF112C has a built-in key detection automatic shutdown function, extremely low standby power consumption, and has output overcurrent protection, over-temperature protection, undervoltage abnormal protection and other functions. The standby current is less than 0.1uA and can be powered by a 2032 button battery. RF112C only needs a few peripheral parts. By adding 2 chip inductors and 3 chip capacitors to the antenna output end, a PCB network matching antenna can be made into a wireless remote control that meets FCC and other certification standards. RF112C can also use a simple wire antenna. Connect an inductor and capacitor and a 15-23 cm long straight wire from the signal output end to achieve a better transmission effect. RF112C has a built-in low-power amplifier, which can generally meet the transmission distance of about 100 meters. The small size of RF112C can be made into a miniature coding transmitter. RF112C has 2 frequencies: 315M and 433.92M. RF112C has a key protection function. If the key is pressed by mistake for 10 seconds, it will automatically stop transmitting to protect the battery loss and reduce interference to the space. It fully complies with FCC, CE and other certification standards. RF112C is an upgraded version in 2018. Chip Features Transmitting power: 13dBm Modulation mode: OOK/ASK Shutdown current: 0uA Transmitting current: 10mA Automatic power off after long press for 10 seconds Chip Application Security access control system・ Wireless alarm Security fire protection system・ Wireless remote control Remote alarm system・ Smart home
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