Electromagnetic Interference (EMI)
Electromagnetic optimization is a core competence of Silicon Labs. As well as implementing chip-level circuits to improve electromagnetic interference performance in a system, we have a very strong understanding of board-level design to ensure best-in-class performance.
Understanding Radiated EMI Tutorial
Low Electromagnetic Interference (EMI) Products
Mixed-signal MCUs
By designing our MCUs with EMI in mind, Silicon Labs delivers solutions that reduce system level noise and interference.
Clocks and Buffers
Silicon Labs' timing devices, including programmable spread spectrum clock generators, feature programming options that allow system designers to minimize EMI at the application level. Configurable parameters to reduce EMI include a wide range of signal integrity adjustments, such as rise/fall times, output impedance, drive strength, edge rates, skew, as well as spread spectrum percentage and modulation rate.
Using spread spectrum, output clock frequencies can be modulated to spread energy across a broad range of frequencies, lowering system EMI. The Si533x series implements spread spectrum using its patented MultiSynth technology which can be applied to any output clock, any clock frequency, and any spread amount. Our XO and VCXO families include low power, differential output signaling formats to help minimize EMI, including LVDS, LVPECL, HCSL, and CML.
Digital Isolators
Silicon Labs digital isolators offer significant performance advantages for electromagnetic emissions and immunity, providing error-free data in noisy environments and up to 20 dB lower electromagnetic emissions than competing solutions. By offering the highest EMI field immunity, these products are well suited for use in noisy environments common in motor control, industrial automation and power supply applications as well as green energy applications such as smart meters where tamper protection is a growing concern.