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ADI releases SPDT switch in SC70 package

Posted: 08 Mar 2004 ?? ?Print Version ?Bookmark and Share

Keywords:adg849? analog devices? adi? analog switch?

Today's handset and multimedia portable designs require higher voltage supplies to support media-rich features, such as musical ringing tones and color screens. As a response, Analog Devices Inc. (ADI) has released its ADG849 high-performance analog switch that is designed to provide best-of class audio switch quality.

The ADG849 is a monolithic, CMOS SPDT (single pole, double throw) switch that operates with a supply range of 1.8V to 5.5V. It is designed to offer ultra-low Ron resistance values of typically 0.5 ohms.

ADI claims that this design makes the ADG849 an ideal solution for applications that require minimal distortion through the switch. The company also said that the device is the industry's first SPDT switch in an SC70 package to feature <1-ohm resistance at 5.5V supply.

The analog switch comes with the capability of carrying large amounts of current, typically 600mA at 5V operation. It minimizes distortion on audio signals up to 5.5V, with total harmonic distortion of 0.02 percent at 25C.

Each switch of the ADG849 conducts equally well in both directions when on. The device exhibits break-before-make switching action, thus preventing momentary shorting when switching channels.

Targeting space-constrained applications that require minimal distortion through the switch, the ADG849 is housed in a 6-lead SC70 package and is priced at 94 cents for 1,000-piece quantities.

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