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Philips unrolls 'first' HDMI-compliant ESD protection IC

Posted: 07 Aug 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Philips? IP4776CZ38? ESD? HDMI?

Philips' ESD protection chip

Royal Philips Electronics has introduced the IP4776CZ38, dubbed as the industry's first ESD protection chip to support the recently released High-Definition Multimedia Interface (HDMI) 1.3 specification.

The higher speed requirements of interfaces such as HDMI 1.3, combined with the trend toward smaller feature sizes, make additional board-level ESD protection essential for semiconductors developed at 90nm and below.

"Ongoing pressure to miniaturize feature sizes has meant that ICs developed today are optimized for area, performance and leakage power consumptionnot for ESD performance. The result is highly sensitive ICs which burn at low clamping voltages, making external board-level ESD protection an absolute must," said Dr. Dirk Wittorf, international product marketing manager for integrated discretes product line at Philips Semiconductors.

The new chip provides back-drive protection and level shifting, and supports HMDI 1.3 as well as previous HDMI standards. The device offers ultralow line capacitance to ensure high signal integrity for video formats such as 1080p.

Chip features
The chip delivers up to 8kV of ESD protection in contact mode for four HDMI transmission channels, I2C-bus, consumer electronics control (CEC), and hot plug detect (HPD) lines. It also has four bi-directional 3.3-5V range level shifters for I2C, CEC and HPD signals. Total line capacitance is 0.7pF, with capacitance matching of less than 0.05pF for TMDS pairs.

Tests at HDMI compliance centers indicate that the IP4776CZ38 supports even higher frequencies than those required for HDMI 1.3, so that it can support future roadmaps.

Packaged in a Pb-free 38-pin TSSOP, the IP4776CZ38 is available worldwide at 97 cents in 10,000-piece quantities.

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