
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
April 2012 Doc ID 022783 Rev 1 1/172
1
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)
– 30 V (absolute maximum rating)
■I2C control with selectable device address
■Embedded full IC protection
– Manufacturing short-circuit protection (out
vs. gnd, out vs. vcc, out vs. out)
– Thermal protection
– Overcurrent protection
– Undervoltage protection
■1 Vrms stereo analog input
■I2S interface, sampling rate 32 kHz ~ 192 kHz,
with internal sampling frequency converter for
fixed processing frequency
■Three output power stage configurations
– 2.0 mode, L/R full bridges
– 2.1 mode, L/R two half-bridges, subwoofer
full bridge
– 2.1 mode, L/R full bridges, PWM output for
external subwoofer amplifier
■Driving load capabilities
– 2 x 20 W into 8 Ωternary modulation
– 2 x 9 W into 4 Ω + 1 x 20 W into 8 Ω
■FFXTM 100 dB dynamic range
■Fixed output PWM frequency at any input
sampling frequency
■Embedded RMS meter for measuring real-time
loudness
■Two analog outputs
– Selectable headphone / line out driver with
adjustable gain via external resistors
–NewF3X
TM analog output
■New fully programmable noise-gating function
■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
filters
– Checksum engine for filter coefficients
– PWM fault self-diagnosis
■STCompressorTM dual-band DRC
Table 1. Device summary
Order code Package Packing
STA382BW VQFN48 Tray
STA382BWTR VQFN48 Tape and Reel
VQFN48 (7 x 7 mm)
www.st.com
Obsolete Product(s) - Obsolete Product(s)