Product category: Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TAS5182/TAS5110/TAS5026/TAS5036
Edited by the Electronicstalk Editorial Team on 19 June 2002
Digital amplifiers sound "as good as
analogue"
Texas Instruments has introduced a new line of cost-effective digital audio amplification products, enabling new opportunities for all-digital audio systems.
Texas Instruments has introduced a new line of cost-effective digital audio amplification products, enabling new opportunities for all-digital audio systems Among the new products is the industry's first 100W all-digital audio amplifier, which enables a manufacturer to shrink the height of an A/V receiver to one quarter of the typical size
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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TI's latest product lines will increase digital amplifier power output, number of channels available and sound quality, while reducing power consumption, system cost and form factor size in targeted audio devices, ranging from DVD and A/V receivers to mini-component systems.
TI's new TAS5182 digital amplifier power stage controller efficiently manages the delivery of a full 100W at 6ohm for driving speakers in home theatre applications.
With the TAS5182's high-efficiency amplification, a typical heatsink's size is reduced by 90% and power supply requirements are reduced by 50%, saving both space and cost.
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"The Texas Instruments digital amplifier is wonderful technology", said Katsuhiko Iida of Lpro System, a Japanese audio consulting firm.
"The tonal balance is so natural that it sounds like the original analogue sound.
It produces an accurate and focused sound, realising a pure and vivid reproduction of the original music or soundtrack".
Katsuhiko Iida has over 30 years of experience as an audio tuning specialist.
For maximum flexibility in the early product design phase, TI offers a modular approach for the digital amplifier evaluation module (EVM) where the full product line of digital power stages can be combined with a broad range of digital PWM modulators in any configuration.
In addition, to ensure fast time to market, TI's digital amplifiers are also available in optimised reference designs targeting specific products, such as DVD receivers.
These reference designs leverage TI's audio product portfolio and provide complete solutions including TI switching power supply designs and compliance with EMI regulations and AM interference requirements.
TI's new power stage products include: the TAS5182, controlling two channels of up to 100W (6ohm) of high-efficiency output each; and the TAS5110 amplifier, providing a 50W integrated single-chip solution for DVD receivers and other high quality home theatre applications.
TI's single-chip, six-channel PWM processors contain all the post-processing necessary for a typical DVD receiver plus provide high quality, 24bit volume control and fourth-order noise-shaping.
These new products include: the TAS5026, offering a high SNR of 96dB for DVD receivers and DVD mini-component systems; and the TAS5036, the highest performing six-channel PWM processor in the market, featuring high-dynamic range for outstanding sound fidelity and a very high SNR of 102dB for A/V and high-end DVD receivers.
The launch of the TAS5182 digital amplifier power stage controller marks the industry's first all-digital power solution to provide up to 100W (6ohm) output drive.
The device is designed with a new architecture that uses external, discrete mosfets for the H-bridge and achieves efficiency of more than 95% in high-power amplification.
With its efficient architecture and thermal PowerPad package, the TAS5182 achieves low heat loss and low power requirements, enabling A/V receivers to be reduced to one-third the height of previous systems.
This product will extend the typical power level of a DVD receiver to levels currently only attained in A/V receivers.
This high power stereo device also enables digital amplifiers in the A/V receiver market, since it can address the typical requirement of 100W per channel.
The TAS5182 also integrates features that help protect the system and simplify the design in high-power audio applications, including overcurrent protection, overtemperature sensing and undervoltage lockout.
TI's new TAS5110 digital amplifier can supply 50W amplification for a wide range of end equipment, such as speakers in DVD and A/V receivers, mini- and micro-component systems, Internet appliances, automotive systems and other mid-power applications.
With efficiencies greater than 90%, the TAS5110 provides an excellent low thermal dissipation solution for systems that require both high audio performance and space constraints.
To ease thermal design, the TAS5110 is available in two PowerPad package options: one with a thermal pad on the bottom for sinking heat into the board, and the other with a thermal pad on top for more traditional methods of heat dissipation.
This flexibility in thermal design makes it easier for manufacturers to transition their speaker and component products to digital technology.
TI's PWM processors support all sample rates currently used in the market, including DVD-audio's 192kHz requirement.
Its first multichannel digital amplifier, the six-channel TAS5026 PWM audio processor, breaks new ground to extend the Equibit digital amplification technology and is targeted specifically at reducing the implementation costs of digital amplifiers in multichannel systems.
In addition to its advanced digital signal processing and fourth-order noise-shaping, the device provides independent 24bit volume control for each channel and employs a patented soft-volume algorithm that provides a smooth, analogue-like sound when volume is changed.
With a high signal-to-noise ratio (SNR) of 96dB, the TAS5026 brings a vivid, clean sound to DVD and A/V receivers, mini- and micro-combos, automotive systems, Internet appliances and other multichannel applications.
The six-channel TAS5036 PWM audio processor adds to the features of the TAS5026 with an even higher SNR of 102dB.
Combined with the inherent advantages of digitally produced sound, the TAS5036 is targeted at high-performance A/V and DVD receivers.
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