Description

Overview

The STA328 comprises digital audio processing, digital amplifier control and DDX® power output stage to create a high-power single-chip DDX® solution for high-quality, high-efficiency, all digital amplification.

Features

! Wide supply voltage range (10 V - 36 V)

! Three power output configurations

–2x40W + 1x80W

–2x80W

–1x160W

! PowerSO-36 package

! 2.1 channels of 24-bit DDX®

! 100-dB SNR and dynamic range

! 32 kHz to 192 kHz input sample rates

! Digital gain/attenuation +48 dB to -80 dB in 0.5-dB steps

! Four 28-bit user programmable biquads (EQ) per channel

! I2C control

! 2-channel I2S input data interface

! Individual channel and master gain/attenuation

! Individual channel and master soft/hard mute

! Individual channel volume and EQ bypass

! Bass/treble tone control

! Dual independent programmable limiters/compressors

! AutoModes

– 32 preset EQ curves

– 15 preset crossover settings

– Auto volume controlled loudness

– 3 preset volume curves

– 2 preset anti-clipping modes

– Preset night-time listening mode

– Preset TV AGC

! Input and output channel mapping

! AM noise-reduction and PWM frequency-shifting modes

! Software volume update and muting

! Auto zero detect and invalid input detect muting

! Selectable DDX® ternary or binary PWM output + variable PWM speeds

! Selectable de-emphasis

! Post-EQ user programmable mix with default 2.1 bass-management settings

! Variable max power correction for lower full power THD

! Four output routing configurations

! Selectable clock input ratio

! 96 kHz internal processing sample rate, 24 to 28-bit precision

! Video application supports 576 * fs input mode.