GENERAL DESCRIPTION

The AD8188 (G = 1) and AD8189 (G = 2) are high speed, single-supply, triple 2-to-1 multiplexers. They offer −3 dB small signal bandwidth of 350 MHz and −3 dB large signal bandwidth of 300 MHz, along with a slew rate in excess of 1000 V/μs. With −84 dB of all hostile crosstalk and −95 dB off isolation, the parts are well suited for many high speed applications. The differential gain and differential phase error of 0.05 and 0.05° respectively, along with 0.1 dB flatness to 70 MHz, make the AD8188 and AD8189 ideal for professional and component video multiplexing. The parts offer 4 ns switching time, making them an excellent choice for switching video signals, while consuming less than 20 mA on a single 5 V supply (100 mW). Both devices have a high speed disable feature that sets the outputs into a high impedance state. This allows the building of larger input arrays while minimizing off-channel output loading. The devices are offered in a 24-lead TSSOP.

FEATURES

Fully buffered inputs and outputs

Fast channel-to-channel switching: 4 ns

Single-supply operation (5 V)

High speed

350 MHz bandwidth (−3 dB) @ 200 mV p-p

300 MHz bandwidth (−3 dB) @ 2 V p-p

Slew rate: 1000 V/μs

Fast settling time: 7 ns to 0.1

Low current: 19 mA/20 mA

Excellent video specifications: load resistor (RL) = 150 Ω

Differential gain error: 0.05

Differential phase error: 0.05°

Low glitch

All hostile crosstalk

−84 dB @ 5 MHz

−52 dB @ 100 MHz

High off isolation: −95 dB @ 5 MHz

Low cost

Fast, high impedance disable feature for connecting multiple outputs

Logic-shifted outputs

APPLICATIONS

Switching RGB in LCD and plasma displays

RGB video switchers and routers