Tiny filters curb 5-GHz audio-line noise
Built with low-distortion ferrite material, TDK’s MAF0603GWY series of filters attenuates noise on audio lines in the 5-GHz band. The filters fit in a compact 0.6×0.3×0.3-mm package for use in small consumer devices like smartphones and wearables with Bluetooth and Wi-Fi audio lines.
Electromagnetic noise radiated from audio lines in electronic devices can interfere with the internal antenna and reduce receiver sensitivity. While chip beads are commonly used to suppress noise, they can degrade sound quality.
TDK reports its newly developed ferrite material minimally affects audio-line characteristics while reducing distortion. The filters provide high attenuation at 5 GHz (impedance up to 3220 Ω) to suppress noise. They also limit attenuation of audio signals with lower resistance than conventional products, enabling a wide dynamic range.
Mass production of the MAF0603GWY series is set to begin in April 2026.
The post Tiny filters curb 5-GHz audio-line noise appeared first on EDN.
