High-speed analog signal switches can handle video signals - Embedded.com

High-speed analog signal switches can handle video signals


The AS1751/AS1752/AS1753 high-performance analog quad switches are designed for high-speed switching of audio, video, and data signals in portable devices like mobile phones, MP3, CD/DVD and video players, digital cameras, and PDAs. Developed by austriamicrosystems, these low-voltage, single-pole/single-throw (SPST) switches offer performance improvements over existing products. Typical switching time has been improved by over 40% while maintaining superior on-resistance (Ron), flatness, and channel matching. Due to the 130-MHz bandwidth, the devices can handle video and high-speed data signals. The supply voltage ranges from 1.6 to 3.6 V; all digital logic inputs are 1.8V CMOS compatible.

The combination of low power and Ron and fast switching speed allows for switching of currents up to 250 mA. The power-routing performance enabled by the 0.9-ê Ron suits the switches for low-impedence speakers and headsets. The parts are available as normally open (AS1751), normally closed (AS1752), and a combination of open and closed (AS1753). They're available in a 16-pin QFN or 14-pin TSSOP packages and are drop-in replacements for MAX4751, MAX4752 and MAX4753. For additional information, go to www.austriamicrosystems.com/03products/01_analog_switches.htm.

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