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Amplifiers reduce car audio system cost

Posted: 24 Oct 2008     Print Version  Bookmark and Share

Keywords:audio amplifiers  greater integration  channel flexibility 

TAS5412, TAS5422

Texas Instruments Inc. (TI) has extended its TAS54xx family of highly-efficient Class-D audio amplifiers with two new devices.

The TAS5412 with single-ended inputs and TAS5422 with differential inputs provide OEMs with improved system design flexibility when combined with TI's existing four-channel amplifier devices, the TAS5414A and TAS5424A. Now car audio system architects can optimise designs that require two or six channels by more efficiently matching the number of speakers while maintaining high levels of integration. In addition, the new TAS5412 and TAS5422 are designed to operate in car audio systems without a microcontroller, offering system-level cost savings.

The TAS5412 and TAS5422 provide superior EMC performance, a key requirement that determines whether electrical components will negatively interfere with other electronic systems within the vehicle. Both amplifiers use the same patent-pending technology from the field-proven TAS54x4A, which surpasses CISPR-25 Level 5 and many OEM-specific requirements, to ensure that high-power audio systems do not compromise vehicle operation.

In addition, the TAS5412 and TAS5422 support higher voltage and current capabilities, enabling a higher maximum output power for applications where feature densities and system configurations require reduction in heat from the audio power amplifier. The amplifiers also incorporate patented PWM designs that provide excellent power supply rejection in the harsh electrical environment common in automotive applications.

The TAS5412 is Rs.227.96 ($5.30) and the TAS5422 is Rs.249.46 ($5.80) in 1000-piece quantities, available on Q1 of 2009.

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