STA335BWSQS中文資料意法半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

Features

! Wide supply voltage range

– 4.5 V to 21.5 V operation

– 23-V absolute maximum rating

! 3 power output configurations

– 2 channels of ternary PWM (stereo mode)

(2 x 20 W into 8 Ω at 18 V)

– 3 channels - left, right using binary and LFE

using ternary PWM (2.1 mode) (2 x 9 W +

1 x 20W into 2 x 4 Ω, 1 x 8 Ω at 18 V)

– 2 channels of ternary PWM (2 x 20 W) +

stereo line out ternary

! 2.1 channels of 24-bit DDX?

! 100-dB SNR and dynamic range

! Selectable 32 kHz to 192 kHz input sample

rates

! I2C control with selectable device address

! Digital gain/attenuation +48 dB to -80 dB in

0.5-dB steps

! Soft volume update

! Individual channel and master gain/attenuation

! Dual independent limiters/compressors

! Dynamic range compression or anti-clipping

modes

! AutoModes

– 15 preset crossover filters

– 5 preset anti-clipping modes

– Preset night-time listening mode

! Individual channel and master soft and hard

mute

! Independent channel volume and DSP bypass

! Automatic zero-detect mute

! Automatic invalid input detect mute

! 2-channel I2S input data interface

! Input and output channel mapping

! 4 x 28-bit user programmable biquads (EQ) per

channel

! Up to 3 different EQ coefficients settings can

be stored and selected using I2C interface

! DC blocking selectable high-pass filter

! Selectable de-emphasis

! Sub channel mix into left and right channels

! Advanced AM interference frequency

switching and noise-suppression modes

! Selectable high or low bandwidth

noise-shaping topologies

! Variable max power correction for lower

full-power THD

! Thermal overload and short-circuit protection

! Video application supports 576 * fS input mode

! QSound QHD?

– Field proven stereo soundfield

enhancement technology

– Provides improved audio image width,

separation and depth for stereo signals

– Synthesizes a 3-D stereo soundfield

! PowerSSO-36 slug down package.

Description

The STA335BWSQS 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 STA335BWSQS is part of the SoundTerminal? family that provides full digital audio

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

enrichment.

The STA335BWSQS 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 STA335BWSQS 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 3-state PWM

switching waveform provides over 100 dB of SNR and dynamic range.