STA333BWQS13TR datasheet(10/71 Pages) STMICROELECTRONICS

10 / 71 page

Overview

STA333BWQS

10/71

Overview

The STA333BWQS is an integrated circuit comprising digital audio processing, digital

amplifier control, DDX® power-output stage and Qsound QHD® to create a high-power

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

The STA333BWQS is part of the SoundTerminalTM family that provides full digital audio

streaming to the speaker, thereby offering cost effectiveness, low power dissipation and

sound enrichment.

The IC 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 20 W of power. The IC can

also be configured as a 2.1 channels with 2 x 20 W provided by the device and external

power for DDX® power drive. Also provided in the STA333BWQS 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™ enable 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. 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 DDX patented

tri-state PWM switching waveform provides over 100 dB of SNR and dynamic range.

1.1

QSound QHD®

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

videosound) 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 immersive 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.

STA333BWQS13TR датащи(PDF) 10 Page - STMicroelectronics