EMI and noise issues

AN4356

2/14

DocID025260 Rev 1

1

EMI and noise issues

Inside handheld applications the different subsets talk together or with the exterior world

using various links (Figure 1).

Figure 1. Handheld equipment schematic

Standards used in mobile applications present high data rates. Here are some examples of

speeds per data lane:

•

MIPI D-PHY up to 1 Gbps

•

HDMI 1.4 up to 3.35 Gbps

•

MHL 1.0 up to 2.25 Gbps

•

Display Port 1.2 up to 2.7 Gbps

•

USB 2.0 up to 480 Mbps

•

SD 4.0 up to 3.6 Gbps

RF

GSM, WCDMA, etc.

LCD

Communication

processor

Application processor

Display controller

Camera module

Memory card

USB

HDMI

MHL

Internal links

External links