STA335BWQS13TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STA335BWQS13TR

2.1 channels high efficiency digital audio system with QSound QHD

STMicroelectronics 

Description

1

Description

STA335BWQS

The STA335BWQS is an integration of digital audio processing, digital amplifier control,

DDX® power-output stage and QSound QHD® technology to create a high-power

single-chip DDX solution comprising high-quality, high-efficiency and all digital amplification.

The STA335BWQS is part of the Sound Terminal™ family that provides full digital audio

streaming to the speaker offering cost effectiveness, low energy dissipation and sound

enrichment.

The STA335BWQS power section consists of four independent half-bridges. These can be

configured via digital control to operate in different modes. 2.1 channels can be provided by

two half-bridges and a single full-bridge, providing up to 2 x 9 W + 1 x 20 W of power output.

Two channels can be provided by two full-bridges, providing up to 2 x 37 W of power. The IC

can also be configured as 2.1 channels with 2 x 30 W provided by the device and external

power for DDX® power drive.

Also provided in the STA335BWQS are a full assortment of digital processing features. This

includes up to four programmable 28-bit biquads (EQ) per channel, and bass/treble tone

control. AutoModes™ enables a time-to-market advantage by substantially reducing the

amount of software development needed for certain functions. This includes auto volume

loudness, preset volume curves and preset EQ settings. There are also new advanced AM

radio-interference reduction modes. The serial audio data input interface accepts all

possible formats, including the popular I2S format. Three channels of DDX® processing are

provided. This high-quality conversion from PCM audio to the DDX-patented 3-state PWM

switching waveform provides over 100 dB SNR and dynamic range.

1.1

QSound® QHD®

Normally, reduced audio clarity is experienced due to the digital compression of music (and

video-sound) combined with various audio processing techniques used in broadcast

transmission. This is most apparent in products such as digital televisions and audio

players. These devices are faced with a multitude of audio challenges, primarily associated

with the small speakers, that are limited in location and cabinet housing, plus economized

speaker drivers and components. As such, digital televisions and audio players are ideal

candidates to benefit from stereo soundfield enhancement in order to deliver a full

surround-like experience.

QSound QHD® and its industry recognized QXpander® technology is a field-proven stereo

soundfield enhancement technology that provides a broader stereo image width with greater

separation and depth for stereo signals and synthesizes a 3-D stereo soundfield. QHD®

removes the small centralized audio sweet spot by creating a very wide stereo image with

full surrounding audio. QHD® and its QXpander® technology have been incorporated into

hundreds of QSound and third party hardware and software products, with total shipments

in the millions.

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