STA323WQS13TR View Datasheet(PDF) - STMicroelectronics
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STA323WQS13TR Datasheet PDF : 78 Pages
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Description
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Description
STA323WQS
The STA323WQS is a single-chip audio system comprising digital audio processing, digital
amplifier control, a DDX® power-output stage and QSound QHD®. The STA323WQS uses
all-digital amplification to provide high-power, high-quality and high-efficiency.
The STA323WQS power section consists of four independent half-bridges. These can be
configured, by digital control, to operate in the following modes.
" Two channels, provided by two half-bridges, and a single full-bridge giving up to
2 x 10 W + 1 x 20 W of power output.
" Two channels, provided by two full-bridges, giving up to 2 x 20 W of power.
" A single, parallel, full-bridge channel capable of high-current operation and giving
1 x 40W output.
The STA323WQS also provides a full set of digital processing features. This includes up to
four programmable 28-bit biquads (EQ) per channel, and bass and treble tone control.
AutoModes enable a time-to-market advantage by substantially reducing the amount of
software development needed for specific functions. These includes auto volume loudness,
preset volume curves and preset EQ settings. New advanced AM radio-interference
reduction modes are also provided.
The serial audio data input interface accepts all existing formats, including the I2S.
Three channels of DDX® processing are provided. This high-quality conversion from PCM
audio to DDX patented 3-state PWM switching provides over 100 dB of SNR and dynamic
range.
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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