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STMicroelectronics - 2.1-channel high-efficiency digital audio system

Numéro de référence STA350BW
Description 2.1-channel high-efficiency digital audio system
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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STA350BW fiche technique
STA350BW
Sound Terminal®
2.1-channel high-efficiency digital audio system
Datasheet production data
Features
Wide-range supply voltage
– 5 V to 26 V (operating range)
– 30 V (absolute maximum rating)
Four power output configurations(a)
– 2 channels of ternary PWM (stereo mode)
(2 x 50 W into 6 Ω at 25 V)
– 3 channels - left, right using binary and LFE
using ternary PWM (2.1 mode) (2 x 18 W +
1 x 40 W into 2 x 4 Ω, 1 x 8 Ω at 25 V)
– 2 channels of ternary PWM (2 x 50 W) +
stereo lineout ternary
– 1 channel of ternary PWM as mono-BTL
(1 x 90 W into 3 Ω at 24.5 V)
FFX100 dB SNR and dynamic range
Selectable 32 to 192 kHz input sample rates
I2C control with selectable device address
Digital gain/attenuation +42 dB to -80 dB with
0.125 dB/step resolution
Soft-volume update with programmable ratio
Individual channel and master gain/attenuation
Two independent DRCs configurable as a
dual-band anti-clipper (B2DRC) or independent
limiters/compressors
EQ-DRC for DRC based on filtered signals
Dedicated LFE processing for bass boosting
with 0.125 dB/step resolution
Audio presets:
– 15 preset crossover filters
– 5 preset anti-clipping modes
– Preset nighttime listening mode
Individual channel and master soft/hard mute
Independent channel volume and DSP bypass
PowerSSO-36
with exposed pad down (EPD)
Automatic zero-detect mute
Automatic invalid input-detect mute
I2S input data interface
Input and output channel mapping
Up to 8 user-programmable biquads per
channel
3 coefficient banks for EQ presets storing with
fast recall via I2C interface
Extended coefficient dynamic up to -4..4 for
easy implementation of high shelf filters
Bass/treble tones and de-emphasis control
Selectable high-pass filter for DC blocking
Advanced AM interference frequency
switching and noise suppression modes
Selectable high or low bandwidth
noise-shaping topologies
Selectable clock input ratio
96 kHz internal processing sample rate with
quantization error noise shaping for very low
cutoff frequency filters
Thermal overload and short-circuit protection
embedded
Video apps: 576 x Fs input mode supported
Fully compatible with STA339BW and
STA339BWS
a. Music output power with THD = 10%, using ST’s recommended board, see Section 4:
Characterization curves for more details.
April 2012
This is information on a product in full production.
Doc ID 018572 Rev 3
1/86
www.st.com
1

PagesPages 30
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