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当前位置：Intersil Debuts New Single-Supply Multiplexers that Deliver Increased Design Flexibility and Cost Savings for High-End Video Applications (ISL59451, ISL59452
发布时间：2007-11-15 浏览：4168次
Intersil Debuts New Single-Supply Multiplexers that Deliver Increased Design Flexibility and Cost Savings for High-End Video Applications— First Buffered Triple 4:1 Single-Supply MUXs in the Industry, the ISL5945X Allow Customers to Choose Between AC and DC-Coupled Designs
MILPITAS, CA, Nov. 7, 2007 – Intersil Corporation (NASDAQ Global Select: ISIL), a world leader in the design and manufacture of high-performance analog semiconductors, today announced two new single-supply, triple 4:1 buffered multiplexers, designed for use in high-end consumer video products. The two new ICs are the ISL59451, which offers an integrated DC-restore feature and the ISL59452, which is designed for AC-coupled systems.
The ISL59451and ISL59452are the first single-supply, buffered triple 4:1 multiplexers in the industry. This feature set is important for consumer customers designing systems where video input is the only feature requiring a negative rail. By eliminating the need for a negative rail, these ICs will help simplify the design of such products as projectors, high-definition TVs and broadcast equipment, and will save board space and cost for ODMs (Original Device Manufacturers).
The ISL59451’s integrated DC-restore feature lifts the video signal above ground and into the operating range of the multiplexer, ensuring the video is in the correct voltage range for processing and a high-quality video signal will result. For systems using an AC-coupled design, the ISL59452is offered without the integrated DC-restore feature and at a slightly lower price. Using these parts, customers can choose between AC or DC coupling video into the 0V to 5V range, while maintaining the excellent video characteristics from the multiplexer that are usually associated with ±5V performance.
These parts can also be used as an input stage, where multiple channels of video are coming into a device (such as a projector) but only one channel needs to be selected at any one time.
Features Highlights of the ISL59451 and ISL59452:
- 250MHz of bandwidth, enough to support high resolution video signals
- Ability to drive 150 Ω video loads for the many applications that require double terminated loads, to cut down on reflections
- Sub-pixel switching rates which enable switching between video signals without pixel loss—an important capability for supporting picture-in-picture features
- Output gain selectable between x1 or x2, enabling the part to drive either 75 Ω or 150 Ω loads, without the need for an additional amplification stage
- Ability to support high impedance output, allowing several of these parts to have their output tied together to form a much larger MUX
- Compact QFN package with thermal slug. Excellent thermal performance, coupled with a tiny footprint make the new MUXs well-suited for today’s space-constrained consumer applications.
