The SX1243 fully integrated, FSK / OOK radio transmitter is designed to replace a surface acoustic wave (SAW)-based resonator transmitters in garage door openers, remote keyless entry (RKE) and other consumer remote control systems. Featuring a fractional-N phase lock loop (PLL) with 1.5 kHz typical step, the part covers the frequency bands from 310 MHz to 450 MHz, 860 MHz to 870 MHz, as well as 902 MHz to 928 MHz which makes it ideally suited for worldwide operation and regulatory compliance for FCC 15.231/15.247, ARIB and European products under EN 300-220.
The transmitter offers a low current consumption of 11 mA in tx OOK mode, 15 mA in tx FSK modem, and 100 nA current in sleep mode. The SX1243 features Semtech’s Power & Go technology that eliminates the need for a microcontroller (MCU) to configure the part. Housed in DFN8 package, the part features bit rates up to 100 kbit/s and supply range from 1.8 to 3.7 V. ($0.55 ea/10,000 – available now)
By Christina Nickolas
Semtech , Camarillo , CA
Sales 805-498-2111
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