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Audio amplifiers improve quiescent current reduction

Posted: 18 Jul 2013 ?? ?Print Version ?Bookmark and Share

Keywords:NXP Semiconductors? audio amplifiers? GSM input? automotive?

NXP Semiconductors has enhanced its family of class-AB audio amplifiers, providing improved quiescent current reduction and decreased smart phone signal interference. The integrated GSM input filtering is built in for increased EMC robustness. The TDF8546A (4x 25W) and TDF8548A (4x 28W) are also the industry's first Class-AB amplifiers to extend line driver detection to 1k load impedance.

Designed specifically for automotive applications, the TDF8546, TDF8546A and TDF8548A amplifiers are quad-channel Class-AB amplifiers available with NXP's Best Efficiency Mode, operating as low as 6V. Both amplifiers enable a seamless audio experience during sudden supply voltage drops in hybrid electric vehicles and other cars using start-stop systems.

"These new amplifiers significantly reduce the effect that smart device signals can have on the speaker cable, while delivering superior sound performance. By improving on our best-in-class family of Class-AB audio amplifiers, NXP continues to provide robust, cost-effective, high-quality infotainment solutions to the automotive market," said Torsten Lehmann, NXP Semiconductors' senior vice president of car entertainment solutions.

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