HDMI protection devices match performance to Ultra-HD viewing

January 21, 2015 // By Graham Prophet
STMicroelectronics has launched its latest single-chip HDMI signal-conditioning and protection ICs, designed for maximum performance up to the fastest 4K Ultra-HD data rates.

The HDMI2C1 series feature active pull-ups on all DDC (Display Data Channel) lines to maintain Ultra-HD signal integrity and minimise dependence on HDMI cable quality. Integrated ESD protection has increased bandwidth to 10 GHz to pass high-speed 4K signals without distortion. On the other hand, low clamping voltage of 10V and fast response time of 30 nsec prevent unwanted transients damaging the latest HDMI chips manufactured in ESD-sensitive deep-nanometer process technologies.

Using an HDMI2C1 device can save 80% of pc-board space occupied by discrete protection components, and can accelerate time to market for fast-moving consumer products such as Ultra-HD set-top boxes and Blu-ray players. In addition, pin assignments are optimised for use with economical single- or two-layer boards.

Features of the HDMI2C1 series include a 5V low-dropout (LDO) regulator with short-circuit and over-temperature protection, as well as level shifters for the HDMI DDC, CEC (Consumer Electronic Control) and Hot-Plug Detect (HPD) lines with back-drive protection. In total, four variants are available, including the HDMI2C1-6C1 for use with external ESD protection or common-mode filtering (ST’s ECMF series) on HDMI data lines thereby enhancing design flexibility.

The HDMI2C1-14HD, HDMI2C1-14HDS, HDMI2C2-14HD and HDMI2C1-6C1 are available in QFN-36L or µQFN-18L packages. Prices start from $0.63 for the HDMI2C1-14HDS, or $0.50 for the HDMI2C1-6C1 (all 100).

STMicroelectronics; www.st.com/hdmi2c1-series