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STMicroelectronics - 2.1-channel high-efficiency digital audio system

Numéro de référence STA382BW
Description 2.1-channel high-efficiency digital audio system
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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STA382BW fiche technique
STA382BW
Sound Terminal®
2.1-channel high-efficiency digital audio system
Datasheet preliminary data
Features
Wide-range supply voltage
– 4.5 V to 26 V (operating range)
VQFN48 (7 x 7 mm)
– 30 V (absolute maximum rating)
)I2C control with selectable device address
t(sEmbedded full IC protection
uc– Manufacturing short-circuit protection (out
dvs. gnd, out vs. vcc, out vs. out)
ro– Thermal protection
P– Overcurrent protection
te– Undervoltage protection
le1 Vrms stereo analog input
oI2S interface, sampling rate 32 kHz ~ 192 kHz,
bswith internal sampling frequency converter for
Ofixed processing frequency
-Three output power stage configurations
t(s)– 2.0 mode, L/R full bridges
– 2.1 mode, L/R two half-bridges, subwoofer
cfull bridge
du– 2.1 mode, L/R full bridges, PWM output for
roexternal subwoofer amplifier
PDriving load capabilities
te– 2 x 20 W into 8 Ω ternary modulation
le– 2 x 9 W into 4 Ω + 1 x 20 W into 8 Ω
oFFXTM 100 dB dynamic range
bsFixed output PWM frequency at any input
O sampling frequency
Headphone
– Embedded negative charge pump
– Full capless output configuration
– Driving load capabilities: 40 mW into 32 Ω
Line out
– 2 Vrms line output capability
Up to 12 user-programmable biquads with
noise-shaping technology
Direct access to coefficients through I2C
shadowing mechanism
Fixed (88.2 kHz / 96 kHz) internal processing
sampling rate
Two independent DRCs configurable as a
dual-band anticlipper or independent
limiters/compressors (B2DRC)
Digital gain/att +48 dB to -80 dB with
0.125 dB/step resolution
Independent (fade-in, fade-out) soft volume
update with programmable rate 48 ~ 1.5 dB/ms
Bass/treble tones control
Audio presets: 15 crossover filters,
5 anticlipping modes, nighttime listening mode
STSpeakerSafeTM protection circuitry
– Pre- and post-processing DC blocking
Embedded RMS meter for measuring real-time
filters
loudness
– Checksum engine for filter coefficients
Two analog outputs
– PWM fault self-diagnosis
– Selectable headphone / line out driver with
adjustable gain via external resistors
STCompressorTM dual-band DRC
– New F3XTM analog output
Table 1. Device summary
New fully programmable noise-gating function
Order code
Package
Packing
STA382BW
STA382BWTR
VQFN48
VQFN48
Tray
Tape and Reel
April 2012
Doc ID 022783 Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/172
www.st.com
1

PagesPages 30
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