●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 Ω at 18 V) + PWM output
● – 2 channels of ternary PWM (2 x 20 W into 8 Ω at 18 V) + ternary stereo line-out
● – 2.1 channels of binary PWM (left, right, LFE) (2 x 9 W into 4 Ω +1 x 20 W into 8 Ω 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
