ST pumps up car radio sound with digital-input audio amplifier

Geneva—STMicroelectronics has started to sample what it is calling the industry's first car audio-amplifier with digital input. Direct connection to the digital audio player eliminates the need for signal conversion, resulting in what ST says is higher sound quality, better noise immunity, simpler system design and greater system reliability.

According to ST, the TDA7801 raises the bar in car-audio sound quality, in both dynamic range and signal-to-noise ratio (from around 90dB to more than 105dB), and delivers intrinsically pop-free operation without clicks or noises during car battery transitions. The elimination of analog lines on the car-radio board also results in high noise immunity.

The TDA7801 is the first member of ST's Digital Automotive Audio amplifier family. ST is currently readying further additions to the family: a Class-SBi (ST's patented efficiency class for the lowest power dissipation possible outside Class-D) version of the TDA7801 and a digital-input Class-D product that will deliver further increase in power savings.

Pricing: $6 for 1000 pieces.
Availability: Sampling with volume production scheduled for Q2 2009.
Datasheet: Click here.


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