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Description

The STA333BW is an integrated solution of digital audio processing, digital amplifier controls and power output stages to create a high-power single-chip FFX digital amplifier with high-quality and high-efficiency. Three channels of FFX processing are provided. The FFX processor implements the ternary, binary and binary differential processing capabilities of the full FFX processor.

The STA333BW is part of the Sound Terminal? family that provides full digital audio streaming to the speakers and offers cost effectiveness, low power dissipation and sound enrichment

Features

■ Wide-range supply voltage, 4.5 V to 21.5 V

■ Three power output configurations:

– 2 channels of ternary PWM (2 x 20 W into 8 ? at 18 V) + PWM output

– 2 channels of ternary PWM (2 x 20 W into 8 ? at 18 V) + ternary stereo line-out

– 2.1 channels of binary PWM (left, right, LFE) (2 x 9 W into 4 ? +1 x 20 W into 8 ? at 18 V)

■ FFX with 100-dB SNR and dynamic range

■ Scalable FFX modulation index

■ Selectable 32- to 192-kHz input sample rates

■ I2C control with selectable device address

■ Digital gain/attenuation +48 dB to -80 dB with 0.5-dB/step resolution

■ Soft volume update with programmable ratio

■ Individual channel and master gain/attenuation

■ Dynamic range compression (DRC) or anticlipping mode

■ Audio presets:

– 15 preset crossover filters

– 5 preset anticlipping modes

– Preset night-time listening mode

■ Individual channel soft/hard mute

■ Independent channel volume and DSP bypass

■ I2S input data interface

■ Input and output channel mapping

■ Automatic invalid input-detect mute

■ Up to 5 user-programmable biquads/channel

■ Three coefficients banks for EQ presets storing with fast recall via I2C interface

■ Bass/treble tones and de-emphasis control

■ Selectable high-pass filter for DC blocking

■ Advanced AM interference frequency switching and noise suppression modes

■ Sub channel mix into left and right channels

■ Selectable high- or low-bandwidth noise-shaping topologies

■ Selectable clock input ratio

■ 96-kHz internal processing sample rate

■ Thermal overload and short-circuit protection technology

■ Video apps: 576 x fS input mode supported

■ Pin and SW compatible with STA335BW, STA339BW, STA339BWS, STA559BW and STA559BWS