Digital Audio System 36-Pin PowerSO Slug Down T/R

The STA323W is a single-chip audio system comprising digital audio processing, digital amplifier control and a DDX power-output stage. The STA323W uses all-digital amplification to provide high-power, high-quality and high-efficiency.The STA323W 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 STA323W 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.

Wide supply voltage range (10 V - 36 V)

Three power output configurations

2 x 10 W + 1 x 20 W

2 x 20 W

1 x 40 W

Thermal protection

Under-voltage protection

Short-circuit protection

PowerSO-36 slug down 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 and hard mute

Individual channel volume and EQ bypass

DDX® POP free operation

Bass/treble tone control

Dual independent programmable limiters/compressors

AutoModes™ settings for:

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

Soft volume update and muting

Auto zero detect and invalid input detect muting selectable DDX® ternary or binary PWM output plus 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