Designed to improve the sound quality and reduce noise interference in audio lines in smartphones and other devices, TDK Corp. has introduced a line of compact noise suppression filters.
Called the MAF1005FR series, the small devices measure 1.0 mm x 0.5 mm x 0.5 mm with a typical impedance of up to 2,600 at 900 MHz and insertion loss of more than 25 dB.
Additionally, these electronic components have a wide frequency bandpass that extends the FM band to the cellular band. Because the MAF1005FR requires only one component instead of two noise suppression filters in conventional products, it simplifies the design and implementation in electronic devices. The devices are used for audio in:
- Smartphones
- Tablets
- Wearables
- Portable games
These suppression filters are important for helping with electromagnetic noise that affects audio quality. Chip beads are commonly used to control noise in audio lines, but they also distort the audio quality.
TDK said it plans to expand its noise suppression filters to include smaller components for high-frequency bandpass noise control, ranging from 900 MHz to 5 GHz.
