GENERAL DESCRIPTION

The AD8178 is a high speed, triple 16 × 5 video crosspoint switch matrix. It supports 1600 × 1200 RGB displays @ 85 Hz refresh rate, by offering a 450 MHz bandwidth and a slew rate of 1650 V/μs. With −82 dB of crosstalk and −90 dB isolation (@ 5 MHz), the AD8178 is useful in many high speed video applications.

FEATURES

Large, triple 16 × 5 high speed, nonblocking switch array

Pin compatible with the AD8175 and AD8176 (16 × 9 switch

arrays) and the AD8177 (16 × 5 switch array)

Differential or single-ended operation

Supports sync-on common-mode and sync-on color

operating modes

RGB and HV outputs available for driving monitor directly

G = +4 operation (differential input to differential output)

Flexible power supplies: +5 V or ±2.5 V

Logic ground for convenient control interface

Serial or parallel programming of switch array

High impedance output disable allows connection of

multiple devices with minimal loading on output bus

Adjustable output CM and black level through external pins

Excellent ac performance

Bandwidth: 450 MHz

Slew rate: 1650 V/μs

Settling time: 4 ns to 1 to support 1600 × 1200 @ 85Hz

Low power of 2.3 W

Low all hostile crosstalk

−82 dB @ 5 MHz

−47 dB @ 500 MHz

Wide input common-mode range of 4 V

Reset pin allows disabling of all outputs

Fully populated 26 × 26 ball PBGA package

(27 mm × 27 mm, 1 mm ball pitch)

Convenient grouping of RGB signals for easy routing

APPLICATIONS

RGB video switching

KVM

Professional video