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)
■
I
2
C 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
■
I
2
S 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
Ω
ternary modulation
– 2 x 9 W into 4
Ω
+ 1 x 20 W into 8
Ω
■
FFX
TM
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
– New F3X
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 I
2
C
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 (B
2
DRC)
■
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
■
STSpeakerSafe
TM
protection circuitry
– Pre
-
and post
-
processing DC blocking
filters
– Checksum engine for filter coefficients
– PWM fault self-diagnosis
■
STCompressor
TM
dual-band DRC
Table 1.
Device summary
Order code
Package
Packing
STA382BW
VQFN48
Tray
STA382BWTR
VQFN48
Tape and Reel
VQFN48 (7 x 7 mm)
Obsolete Product(s) - Obsolete Product(s)
