STA333BW
2.1-channel 40-watt high-efficiency digital audio system
Sound Terminal®
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
PowerSSO-36
with exposed pad down (EPD)
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
Table 1. Device summary
Order code
STA333BW
STA333BW13TR
Package
PowerSSO-36 EPD
PowerSSO-36 EPD
Packaging
Tube
Tape and reel
January 2011
Doc ID 13773 Rev 3
1/67
www.st.com
67