Protection and Common-Mode Filtering for MIPI CSI and DSI interfaces

The most common camera and display interface used now for portable devices is the differential MIPI interface running at RF frequencies. To allow operation at typical GSM/3G/LTE frequencies, a strong common-mode suppression over all bands and higher harmonics is needed. At the same time, a wide differential passband is needed to keep signal integrity. Since ESD can enter through gaps in the portable device, strong ESD protection is needed to avoid damage of the electronics or re-setting the system due to ESD strikes


Key features and benefits

  • Very strong common-mode suppression > 14 dB in the range between 500 MHz and > 8 GHz
  • Very wide passband > 2 GHz, ensuring signal integrity for all MIPI frequencies
  • ESD ruggedness > 15 kV contact, far exceeding IEC 61000-4-2 (8 kV contact)
  • Deep snap-back for optimized SoC protection against ESD strikes
  • Very thin package (0.5 mm max package height)

Key applications

  • MIPI CSI camera interface
  • MIPI DSI display interface
  • HDMI
  • All LVDS signals needing a passband up to 2 GHz

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Descriptive summary

The new PCMFxDFN1 series offer a unique combination of common-mode suppression, wide differential passband and system-level ESD protection. The widest common-mode suppression in the industry offers the best insurance against EMI issues. Since it cannot be planned, which frequency or higher harmonics will cause interference, the PCMFxDFN1 offers strong common-mode suppression over the whole relevant frequency range.

A wide passband > 2 GHz helps to maintain the signal integrity for all frequencies used in the MIPI standard.

A strong system-level ESD protection with deep snap-back will ensure the best possible system-level ESD protection against strikes coupling, for example, through the gap between camera and body of the mobile device.

PCMF2DFN1 protects and filters two differential line pairs.

PCMF3DFN1 protects and filters three differential line pairs.

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