ECMF: ST common-mode filters with integrated ESD protection

for high-speed interfaces

ST ECMF technology ensures deep, ultrawide attenuation of common-mode noise at WLAN and Bluetooth frequencies (2.4 to 6 GHz), along with robust (+10 kV) contact discharge ESD protection. Featuring 10.7 GHz bandwidth, these new filters comply with latest high-speed standards, including USB4, HDMI 2.1 and USB 3.2. The devices come in tiny 6- and 10-lead µQFN packages and are optimized for personal electronics and industrial applications.

Key features of ECMF filters

  • 10.7 GHz bandwidth for USB4, HDMI 2.1 and USB 3.2 Gen 2
  • High common-mode attenuation on WLAN band
  • Low serial resistance: 3.0 Ω
  • 6- and 10-lead µQFN packages: Thin package
  • 0.25 pF line capacitance for a high-speed ESD protection

Application examples

Industrial computer

Industrial computer

Portable devices

Portable devices

Docking station

Docking station

Tablet

Tablet

Use case: how to avoid antenna desense

Using integrated common-mode filters in industrial automation and computer applications

Recommended resources

high-bandwidth common-mode filters ensure signal integrity in multi-gigabit serial interfaces

ST high-bandwidth common-mode filters ensure signal integrity in serial interfaces

Press announcement

New ST common-mode filters with an extremely wide 10.7 GHz differential bandwidth to protect antenna sensitivity in adjacent wireless circuitry from the latest serial digital interfaces.

The ECMF2-40A100N6 and ECMF4-40A100N10 ensure that high-speed interfaces and wireless protocols coexist peacefully.

How to solve antenna desense issues with ECMF

Application note

We explain how differential lines can generate electromagnetic noise that can affect the receiver sensitivity, and how to maintain noise-free reception of RF signals.

The ECMF2-40A100N6 and ECMF4-40A100N10 ensure that high-speed interfaces and wireless protocols coexist peacefully.

EMI/EMC simulation

Whitepaper

EMI/EMC and co-existence simulation methodology for high-performance digital, mixed-signal, and RF wireless products