EMI filters and Application-Specific Integrated Products (ASIP)

Main applications for EMI filters and ASIP technology

For EMI filters:

memory cards

microphones

speakers

parallel displays

keypads

For ASIP technology:

SerDes,
HDMI 2.0,
HDMI 2.1,
MIPI DSI,
CSI communications

DisplayPort 2.0

USB 3.2,
USB 4.0

SD-Card 4.2

EMI filter and ASIP product types

Our EMI filter and ASIP portfolio includes 4 main types of solutions designed to reduce high-frequency electromagnetic noise present on power and signal lines. These flexible and highly integrated solutions help electronic engineers meet their main design challenges, while reducing development time and costs.

EMI filters with ESD protection

For low-speed digital interfaces or analog application, ST provides EMI filters with integrated ESD protection, targeted to protect lines of memory cards, microphones, speakers, parallel displays, and keypads.

Find products

Common Mode Filters with integrated ESD protection (ECMF)

For high-speed data lines such as HDMI 2.0, HDMI 2.1, USB3.2, USB4.0, Display Port 2.0, SD-Card 4.2, MIPI DSI or CSI communications, ST’s Common Mode Filters with integrated ESD protection (ECMF) are tailored to reject a wide range of frequency bands (5G, LTE, 2.4 GHz Bluetooth, and 2.4 and 5 GHz Wi-Fi, to name a few.

Find products

Application Specific Integrated Product (ASIP)

For specific applications requiring more integration for space-saving and improved performance, ST has developed integrated circuits using its Application Specific Integrated Product (ASIP) technology. It combines ESD protection at system level (IEC 61000-4-2) with discretes (R, L, C) and over voltage, over current protections, and other IPs such as low-drop-out regulators, deglitch filters and signal conditioning such as multiplexers and level translators among others. ST’s ASIPs reduce system size, complexity, and cost while improving the Failures In Time (FIT) rate for increased longevity.

Find products

EMI filters, ECMF ans ASIPs for automotive applications

ST’s EMI filters, ECMF and ASIPs for automotive applications are qualified as per AEC-Q101 and are compliant with IEC 61000-4-2 and ISO 10605. They are useful in SerDes applications including FPD-link, GMSL, and MIPI DSI or CSI to avoid radiation in vehicle to everything (V2X) (5.9 GHz) and global navigation satellite system (GPS, Glonass, BeiDou, Galileo, and IRNSS) frequencies.

Find products

Benefits of ST’s EMI filters and ASIP technology

ST’s EMI filters and ECMF provide a monolithic integration of the required ESD protection at system-level (according to standard IEC 61000-4-2 level 4 +8kV contact) along with a filter that reduces EMI noise on digital or analog communication lines for space-saving purposes.

Main benefits:

• Requires less PCB space compared to equivalent discrete solutions
• Increases application robustness against electrostatic discharges and EMI / common-mode noise.
• Offers a wider frequency range rejection thanks to a lower parasitic inductance compared with discrete solutions.
• Improved design flexibility as the filter’s resonant frequency is not modified when designers need to slightly change the PCB layout (unlike with discrete solutions).
• EMI filters are available in first order (R-C) or second order (L-C)