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Analogue switches target portable devices

Posted: 28 Feb 2006     Print Version  Bookmark and Share

Keywords:AS1741  AS1742  AS1743  analogue switch  austriamicrosystems 

austriamicro'saustriamicrosystems has announced the availability of its AS1741, AS1742 and AS1743 analogue switches in compact 8-pin SOT23 packaging.

"Product miniaturization continues to be a dominant trend in the consumer electronics industry and we are anticipating the need for smaller packaging," said Walter Moshammer, marketing director for standard linear at austriamicro. "These switches deliver a 40 per cent reduction in size compared with 8-pin MSOP packaging, which means that the space needed on the PCB can be significantly reduced."

Switching time is said to have been improved by over 40 per cent while maintaining improved RON flatness and channel matching. Through the 130MHz bandwidth, the devices are suitable for video and high-speed data signals. The wide supply voltage range from 1.6V to 3.6V supports a range of designs. All digital logic inputs are 1.8V CMOS compatible.

The 6mm2 reduction in size from the 5-by-3mm MSOP package to the 3-by-3mm SOT23 package makes these devices suitable for portable battery-powered applications such as cell phones, MP3 players, CD/DVD and video players, digital cameras and PDAs. The devices allow for switching of currents up to 250mA.

The analogue switches are available as two normally open (AS1741), two normally closed (AS1742) and a combination of one open and one closed switch (AS1743). The devices are available in the compact 8-pin SOT23 and the 8-pin MSOP package and are drop-in replacements for MAX4741, MAX4742 and MAX4732.

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