TI Debuts Digital Amplifier PWM Processor for Home Theater Receivers

9/14/2004 - Texas Instruments Incorporated (TI) (NYSE: TXN) is demonstrating the industry´s highest performance digital amplifier pulse-width modulator (PWM) processor at the Mount Rushmore suite at the Hyatt Regency Indianapolis in conjunction with the CEDIA conference. TI´s extensive line of digital amplifier solutions enable manufacturers to develop affordable high-power audio systems that offer high sound quality in an ultra-slim form factor. (See www.ti.com/digitalaudio8.)

The industry-leading TAS5518 PWM processor offers the highest level of integration and sound quality to consumer electronics manufacturers developing products such as A/V receivers and DVD receivers. This newest PWM processor provides up to eight speaker channels with 48-bit processing for sound field enhancement, enriching the home theater experience. The processor achieves an unmatched 110dB dynamic range on all eight channels. The TAS5518 also provides an additional 24dB dynamic range boost with an innovative power supply volume control feature, which at normal listening levels, gives an unparalleled dynamic range of 134dB. The device also offers the lowest noise floor in the digital amplifier industry, with as low as 10uV of output noise, creating astonishingly clear sound.

"Texas Instruments is the clear leader in the digital amplifier and Class D audio circuit market," said Will Strauss, founder and principal analyst, Forward Concepts, who recently released a report entitled "Emerging Markets for Class D Power Amplification." "One of the key reasons for TI's success in this market is innovation, and the TAS5518 is a great example of TI driving advanced technology, once again raising the bar in audio performance."

Advanced Digital Amplification
The new TAS5518 audio processor operates in conjunction with TI´s power stages including the TAS5182, which was the industry´s first all-digital power solution with up to 100W output drive. The TAS5182 is designed with an architecture that uses external, discrete MOSFETs for the H-bridge and achieves efficiency of more than 95 percent in high-power amplification. With its efficient architecture and thermal PowerPadTM package, the TAS5182 exceeds low heat loss and low power requirements, enabling A/V receivers to be reduced to one-quarter the height of previous systems.

"The TAS5518 is a great complement to our industry-leading product line of digital amplifier solutions," said Jeff Akgul, Home Digital Audio business manager at TI. "Sound performance is one of the key differentiators in this market, and achieving this level of clarity, while minimizing size and cost, is a benefit we are happy to pass along to our customers."

TI´s PurePath DigitalTM Audio Technology
The TAS5518 and TAS5182 are based on TI´s PurePath Digital technology, which allows consumer electronics manufacturers to build completely digital, end-to-end audio products with cutting-edge sound reproduction and the most lifelike sound in a compact form factor. Reproducing movie soundtracks or music exactly the way the artist intended, PurePath Digital technology offers the best in high-end digital entertainment to the everyday consumer. PurePath Digital technology complements other TI digital and analog products that support audio applications, such as digital signal processors (DSPs), switch mode power management devices, headphone amplifiers, digital interface and audio data converters.

Availability, Packaging and Pricing
The TAS5518 digital audio processor is now available in volume. Packaged in a 64-pin TQFP, the device is priced at $7.95 each in quantities of one thousand. The TAS5182 power stage is available today at $5.30 in quantities of one thousand.

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