RF transmitter IC simplifies the complexity of one-way wireless links

RF transmitter IC simplifies the complexity of one-way wireless links

The EZRadio Si4010 SoC RF transmitter IC is offered as the first single-chip remote control IC requiring only one external bypass capacitor, a printed circuit board, battery and external case with pushbuttons to create a complete wireless remote control. Based on a crystal-less architecture, the part achieves ±150-ppm carrier frequency accuracy over the commercial temperature range and ±250 ppm over the industrial temperature range claimed twice the accuracy of traditional SAW-based transmitters without using an external crystal.

The SoC offers automatic antenna tuning and supports programmable edge rate control for on-off keying (OOK) mode to reduce harmonic emissions and comply with governmental RF regulations. It also outperforms competing discrete solutions, offering +10 dBm output power, exceptional range, and robust links.

Features include a 1.8- to 3.6-V supply range, a current consumption of less than 10 nA in standby and less than 20 mA at peak current, and a low-power wake-on-touch operation. The IC contains an embedded 8051-compatible MCU core with 4 kB of RAM, 8 kB of OTP non-volatile memory, a 128-bit EEPROM and 12 kB of ROM for library functions.

Also available is the Si4012 RF transmitter, featuring the same RF and analog circuitry of the Si4010 but without an integrated MCU. The parts are supported by the 4010-DASKF_434 evaluation kit to demonstrate RKE fob functionality, the 4010-DAAKF_434 evaluation kit to demonstrate AES encryption functionality in RKE fobs, and the 4010-DKKF_434 development kit providing a comprehensive Si4010 software development environment. (ea/10,000, Si4010, from $1.40; Si4012, from $1.17, 4010-DASKF_434, $24.99, 4010-DAAKF_434. $49.99; 4010-DKKF_434 development kit is priced at $150 — available now.)

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