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10bit video digitiser 165MSPS throughput enables 1,080p

Posted: 06 Jun 2007     Print Version  Bookmark and Share

Keywords:video digitiser  HDTV  HD DVDs  digital PLL 

ISL51002 10bit video digitiser from Intersil

Intersil Corp. has introduced the ISL51002 10bit video digitiser that combines ease-of-use and high-resolution video performance to create the suitable choice for digitising analogue YPbPr video from HDTV tuners, STBs, SD and HD DVDs, as well as RGB graphics signals from PCs and workstations.

ISL51002 has three speed grades up to 165MSPS to deliver resolution up to 1,080p/UXGA at 60Hz, the latest available standard. Its built-in black level compensation prevents variations in colour or hue?even variations caused by temperature change?and its unparalleled differential non-linearity, typically 0.86LSB at 165MHz, eliminates visible contour errors when digitizing gradually changing images. The remarkable channel linearity is only the beginning of the story though, as the ISL51002 comes with a host of features not available in competitive devices.

ISL51002's digital PLL has high noise immunity and 250ns (typical) and 500ns (max), low jitter performance that eliminates the need for an analogue loop filter. This highly innovative PLL is the easiest to use in the industry, with only one parameter needing to be programmed for optimal video performance.

The device also has an integrated sync measurement circuit that eliminates the development time of implementing this function in software. This circuit analyses the incoming sync signals for type, polarity, period and pulse width. This data, which is necessary for correct display, is read from internal registers through an I?C interface.

Moreover, ISL52002 has an integrated automatic sampling phase adjust that evaluates 64 different sampling phases each second and selects the best phase to deliver the sharpest picture possible. It also has a robust Macrovision-compliant sync separator that prevents visual disturbances when Macrovision-protected signals are displayed or head-switching noise from analogue VCRs is encountered.

ISL51002's 4:1 mux input provides superior design flexibility. Also simplifying design is an integrated RGB to YUV colour space converter which allows the user to process an RGB signal in the YUV space.

The ISL51002 has unparalleled DNL (typical +0.86LSB at 165MHz), eliminating visible contour errors when digitizing gradually changing images.

Target applications for the ISL51002 include flat panel TVs, front/rear projection TVs, PC LCD monitors and projectors, high-quality scan converters and video/graphics processing.

The ISL51002 is available now in a 128-lead MQFP package.

- Henri Arnold
EE Times Europe

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