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Crosspoint Switches and Differential Amplifiers Suit Video Distribution Systems

Analog Devices has announced the industry’s first combination of analogue crosspoint switches and driver/receiver amplifiers to support bandwidths to 500MHz for analogue video.



Thanks to a combination of low implementation costs and high resolution content delivery across distance, analogue video remains the method for distributing full motion video to LCD and plasma displays in retail outlets, public spaces and KVM (Keyboard, Video and Mouse) systems. The latest parts from Analog Devices allow designers to deliver the bandwidth required to support UXGA and QXGA resolution in large displays.

AD8175/6 Crosspoint Switches
The AD8175 and AD8176 are triple 16 x 9 crosspoint switches with respective gains of +2 and +4. The devices deliver an industry best bandwidth of 500MHz, which is more than 60% faster than the nearest competitor while offering twice the functionality.

Each switch features a slew rate of 1800V/µs to support UXGA (Ultra eXtended Graphics Array), a high monitor resolution of 1600 × 1200 pixels, quadruple the default resolution of SVGA (800 × 600), as well as QXGA (Quad eXtended Graphics Array), a superior resolution of 2048 x 1536. These devices also support sync on common mode and sync on colour operation.

The AD8175/6 switches can be applied both differentially and single-ended and operate on a ±2.5V or +5V power supply. Typical power consumption is only 3.5W. High levels of integration, advanced architecture and pin-out configuration simplify board layout and system design while reducing cost.

The AD8175/6 are available in a 676-lead PBGA (Plastic Ball Grid Array) package and will operate over the extended industrial temperature range of -40°C to +85°C.

AD8145/6/7/8 Differential Amplifiers
The AD814x family of high speed differential amplifiers is the industry’s first line of triple differential drivers and receivers to achieve full-power bandwidth of 550MHz, or greater, which is more than twice the bandwidth of the nearest competitor. The wide bandwidth of the differential amplifiers complements the AD8175 switch by fully preserving the resolution of component video when sending and receiving signals across multi-stage video distribution systems. The ability to send and receive RGB and sync signals easily over Cat5 cable is integrated on one chip, enabling video distribution systems to maximise resolution at the lowest possible cost.

The AD8145/6/7/8 devices are available in space saving LFCSP (Lead Frame Chip Scale Package).

Features: AD8175/6

• Large, triple 16 x 9 high speed, non blocking switch array
• Differential or single-ended operation
• Supports sync-on common-mode and sync-on colour
• Decoded HV sync outputs available
• G = +2 operation (differential input to differential output)
• Flexible power supplies: +5V or ±2.5V
• Serial or parallel programming of switch array
• Bandwidth: 500MHz
• Low power: 3.5W

Features: AD8145/6/7/8

• Triple, high speed fully differential drivers
  • AD8145: 500MHZ, G = 1 or 2
  • AD8146/7: 700MHz, G = 2
  • AD8148: 540MHz, G = 4
• Differential or single-ended operation
• LFCSP package type

Applications

• RGB video switching
• YPbPr video receivers
• KVM systems
• Professional video
• UTP receivers

For further information, including Datasheets for featured products, please click here