I-PEX ZenShield® connectors are recommended for signal transmission from camera module using MIPI
The recent pandemic has changed people's lifestyles dramatically. As people spend more time at home, the opportunities for online communication such as online meetings and conferences have increased. As a result, the performance requirements for electronic devices have also changed dramatically.
In particular, many of the latest notebook PCs have enhanced camera functions to meet such needs and are increasingly equipped with high-definition cameras and IR cameras for face recognition.
USB was generally used for signal transmission from the camera module to the motherboard , but with the increase in the resolution of cameras, there have been many cases of switching to MIPI CSI-2 D-PHY, which has a faster communication speed than USB. In the past, it was necessary to convert the MIPI signal output from the camera image sensor to the USB signal within the camera module and transmit it, but by directly transmitting the MIPI signal output from the camera image sensor to the CPU, image processing with low latency has become possible.
MIPI CSI-2 D-PHY v2.1 supports a maximum transmission speed of 4.5 Gbps per lane, which is much faster than conventional USB 2.0, which supports a maximum of 480 Mbps per lane. However, in notebook PCs and tablets, which are densely populated with various electronic components, antennas are often mounted nearby, and MIPI signals (including System Clock signal lines for D-PHY) may adversely affect the antennas. Therefore, EMC measures are very effective to prevent signal interference between them.
The I-PEX ZenSheild® connector series can provide excellent EMC countermeasures. The 360-degree EMC shielding design prevents electromagnetic noise radiation not only from the contact points of the plug and receptacle, but also from the board mounted part (SMT positions) of the signal terminals. In addition, both plug and receptacle shields are properly connected for grounding at multiple points when the connectors are mated and are properly grounded to the board. This ensures enough ground return paths for the current generated in the metal shields of the connector. This works to suppress the emission of electromagnetic noise from its shield.
ZenSheild® Connector Series Design
1. The entire connector is covered with 360° shielding, for both the plug and receptacle -- not only the contact part of the signal terminal, but also the board mounted part (SMT positions).
2. The shield-to-shield interface between the plug and receptacle is effectively connected at multiple points.
3. Furthermore, the connector shield-to-board interface is properly grounded at multiple points on the board, thereby improving the ground return path.
MIPI (Mobile Industry Processor Interface): Standard for interfacing with cameras and displays of mobile devices developed by MIPI Alliance, Inc.
USB (Universal Serial Bus): Serial bus standard developed by the USB Implementers Forum, Inc. for connecting peripherals to computers and other information devices.