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.

特性 Features

■ Wide supply voltage range (4.5 to 20 V)

■ 3 power output configurations

– 2 channels of ternary PWM (stereo mode) (2 x 20 W @ 8 ?, 18 V).

– 3 channels - left, right using binary and LFE using ternary PWM (2.1 mode) (2 x 9 W + 1 x 20 W @ 2 x 4 ?, 1 x 8 ?, 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

– 2 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

■ Bass/treble tone control

■ 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 x fs input mode

■ QSound QHD?

– Field proven stereo soundfield enhancement technology

– Provides improved audio image width, seperation and depth for stereo signals

– Synthesizes a 3-D stereo soundfield

■ PowerSSO-36 slug down package