English
ESD protection for HDMI 1.3 interfaces
The hot-plugging capability of HDMI ports makes ESD protection a must.
By Dr. Tamim P. Sidiki, Dr. Horst Roehm, Andreas Zimmermann, Axel Held, NXP Semiconductors
Abstract
The HDMI 1.3 specification supports the demand of future HD display devices for higher resolution and higher frame rates with a color depth up to 48-bit by doubling bandwidth from 165 MHz (4.95 Gbps) to 340 MHz (10.2 Gbps) of the previous HDMI 1.2 specification. The hot-plugging capability of HDMI ports makes ESD protection a must. In this paper, various ESD protection options are investigated, and a fully-integrated interface IC providing highest ESD- and back drive protection as well as the required level shifting for the I2C, CEC and hot-plug lines is presented. With only 0.7-pF total line capacitance, the NXP Semiconductors IP4776CZ38 provides the highest signal integrity for HDMI 1.3 ports and enables designers to pass HDMI compliance testing easily.
By Dr. Tamim P. Sidiki, Dr. Horst Roehm, Andreas Zimmermann, Axel Held, NXP Semiconductors
Abstract
The HDMI 1.3 specification supports the demand of future HD display devices for higher resolution and higher frame rates with a color depth up to 48-bit by doubling bandwidth from 165 MHz (4.95 Gbps) to 340 MHz (10.2 Gbps) of the previous HDMI 1.2 specification. The hot-plugging capability of HDMI ports makes ESD protection a must. In this paper, various ESD protection options are investigated, and a fully-integrated interface IC providing highest ESD- and back drive protection as well as the required level shifting for the I2C, CEC and hot-plug lines is presented. With only 0.7-pF total line capacitance, the NXP Semiconductors IP4776CZ38 provides the highest signal integrity for HDMI 1.3 ports and enables designers to pass HDMI compliance testing easily.
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