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Switches allow multiple audio signals sharing

Posted: 10 Nov 2008 ?? ?Print Version ?Bookmark and Share

Keywords:audio signal? analog switch? speaker sharing?

Maxim Integrated Products has developed the MAX14504/MAX14505/MAX14505A/MAX14506 dual SPDT analog switches for multiplexing high audio-output signals with low distortion.

Claimed to be the industry's only switches to multiplex -Vcc to +Vcc signals, these devices enable multiple audio signals to share a single speaker, and thus eliminate the need for a negative supply and simplify designs. Targeted for interfacing Maxim's DirectDrive and Class G amplifiers, these switches are also well suited for portable applications that must conserve space while preserving high-fidelity outputs.

In addition, the MAX14504/MAX14505/MAX14505A/MAX14506 feature low on-resistance (0.35?, typ), low supply current (11?A, typ), and a 2.3V to 5.5V supply voltage range. The MAX14505/MAX14505A also integrate shunt resistors to reduce the click-and-pop sounds that occur when switching audio signals between pre-charged points.

All devices are available in a tiny, 1.5mm x 2.1mm, 12-bump WLP package and are fully specified over -40C to +85C extended temperature range. Prices start at $1.03 (1,000-up, FOB USA).





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