Overview
The ECMF04-4AMX12 is a highly integrated common mode filter designed by STMicroelectronics to suppress EMI/RFI common mode noise on high-speed differential serial buses, such as MIPI D-PHY and MDDI interfaces. This component is engineered to protect and filter two lanes of data transmission, ensuring robust signal integrity and ESD protection.
Key Specifications
| Symbol | Parameter | Value | Unit |
|---|---|---|---|
| VPP | Peak pulse voltage (IEC 61000-4-2 contact discharge) | ±8 kV | kV |
| VPP | Peak pulse voltage (IEC 61000-4-2 air discharge) | ±15 kV | kV |
| IDC | Maximum DC current | 200 mA | mA |
| Top | Operating temperature | -40 to +85 °C | °C |
| Tj | Maximum junction temperature | 125 °C | °C |
| Tstg | Storage temperature range | -55 to +150 °C | °C |
| VBR | Breakdown voltage (IR = 1 mA) | 6 V | V |
| IRM | Leakage current (VRM = 1.5 V per line) | 100 nA | nA |
| RDC | DC serial resistance | 1.8 to 2.5 Ω | Ω |
Key Features
- Very large differential bandwidth > 6 GHz
- High common mode attenuation: -34 dB at 900 MHz and -20 dB between 800 MHz and 2.2 GHz
- Very low PCB space consumption with a thin package (max 0.6 mm)
- Lead-free package compliant with environmental standards
- High reduction of parasitic elements through integration
- Complies with IEC 61000-4-2 level 4 for input and output pins
Applications
- Mobile phones
- Notebooks and laptops
- Portable devices
- Personal Navigation Devices (PND)
Q & A
- What is the primary function of the ECMF04-4AMX12?
The ECMF04-4AMX12 is designed to suppress EMI/RFI common mode noise on high-speed differential serial buses like MIPI D-PHY and MDDI.
- What is the maximum current rating of the ECMF04-4AMX12?
The maximum DC current rating is 200 mA.
- What are the operating temperature ranges for the ECMF04-4AMX12?
The operating temperature range is -40 to +85 °C.
- What is the breakdown voltage of the ECMF04-4AMX12?
The breakdown voltage is 6 V at a current of 1 mA.
- What is the common mode attenuation of the ECMF04-4AMX12 at 900 MHz?
The common mode attenuation is -34 dB at 900 MHz.
- Is the ECMF04-4AMX12 lead-free?
- What are the typical applications of the ECMF04-4AMX12?
Typical applications include mobile phones, notebooks, laptops, portable devices, and Personal Navigation Devices (PND).
- What is the package type of the ECMF04-4AMX12?
The package type is µQFN-12L.
- What are the ESD protection levels of the ECMF04-4AMX12?
The ECMF04-4AMX12 complies with IEC 61000-4-2 level 4, with ±15 kV air discharge and ±8 kV contact discharge.
- How should the PCB be designed for optimal performance of the ECMF04-4AMX12?
The connection to PCB GND should be as short as possible, and the layout should ensure minimal solder paste asymmetry and proper via placement.
