Product category:
Analogue and Mixed Signal ICs
News Release from: Zetex | Subject: ZXCW8100
Edited by the Electronicstalk Editorial
Team on 27 November 2002
Amplifier claims new standards for sound
quality
In launching the Acoustar ZXCW8100 two-channel digital audio amplifier controller, Zetex claims to have created the world's first 32bit end-to-end digital audio amplifier solution.
In launching the Acoustar ZXCW8100 two-channel digital audio amplifier controller, Zetex claims to have created the world's first 32bit end-to-end digital audio amplifier solution Compatible with existing and emerging digital audio signal formats, the ZXCW8100 amplifier is claimed to set wide ranging new standards for sound quality
This article was originally published on Electronicstalk on 24 Jul 2008 at 8.00am (UK)
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Able to handle digital audio signals sampled at up to 192kHz and applying 32bit data processing, the ZXCW8100 controller supports all common digital audio formats, from SACD to DTS.
Producing pulsewidth-modulated left and right channel outputs at a PWM frequency of 1MHz means that RF switching interference is minimised, enabling significant advances to be made in audio performance.
A total harmonic distortion plus noise performance of 0.02% at 1W into a 4ohm load is achieved with the Acoustar solution, producing an audio quality better than any other comparable digital amplifier.
Where previous solutions have failed to attain a dynamic range of 90dB, the ZXCW8100 amplifier provides over 100dB and with a noise floor of 125dB, hiss is completely removed.
A complete solution, the Acoustar ZXCW8100 digital audio amplifier comprises the controller IC, gate drivers, mosfet H-bridge stage and output filters.
Driven by the ZXCW8100's dual PWM outputs, a bridge tied load output stage using Zetex' own audio performance mosfets can deliver genuine audio power levels of between 10W and 50W of music.
Connected to a host controller by a simple three-wire serial peripheral interface (SPI), the ZXCW digital audio amplifier controller is easily configured using a single 72bit control word that provides total control of all sound attributes via volume, bass, treble, mute and other functions.
To support six-channel (5.1 home theatre) domestic DVD and in-car entertainment systems, the ZXCW8100 includes a device ID that enables up to four devices to be used together in any one system.
As a result, three ZXCW8100 audio amplifiers are easily integrated for 5.1 systems, with four devices supporting emerging seven- and eight-channel systems.
Zetex is supporting the launch of the ZXCW8100 end-to-end digital audio amplifier solution with a full package of application support services.
To help minimise design cycle times, Zetex is offering qualifying customers full reference designs, PCB layouts and evaluation boards.
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