50MHz Video Amplifier and Mux Amps

The MAX452 is a unity-gain stable, 50M Hz video amplifier capable of driving a 75 ohm load directly. The MAX453, MAX454, and MAX455 combine the 50MHz video ampli­fier. of the MAX452, with an on-board multiplexer offering 2, 4, or 8 channels respectively. All of the MAX452 family devices operate from ±5V supplies and typically con­sume only 250mW.

Optimized for video applications, these amplifiers will directly drive a 150 ohm load to ±2v. and will swing ±1V into a 75 ohm load. All amplifiers are unity-gain stable and do not require external frequency compensation com­ponents. The MAX453/454/455 operate as positive-gain amplifier's, gain being set by two external resistors. Since they are connected as non-inverting amplifiers, their minimum closed-loop gain is OdB. In most applications the amplifier's closed-loop gain will be set at OdB or +6dB (1 V/V or 2 V/V). which guarantees a minimum bandwidth of 25MHz.

APPLICATIONS

* Video signal multiplexing

* 75 ohm cable drivers

* Driving flash converters

* Video Crosspoint Switches/li>

* Unity-gain bandwidth of 50MHz typ.

* Low Input capacitance: 7pF typ.

* No frequency-compensation required

* Low power operation: 250mW typ.