STA3818W View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STA3818W Datasheet PDF : 174 Pages
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STA381BW
Sound Terminal®
2.1-channel high-efficiency digital audio system
Datasheet - production data
VQFN48 (7 x 7 mm)
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 ternary modulation
– 2 x 9 W into 4 + 1 x 20 W into 8
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
– New F3XTM analog output
New fully programmable noise-gating function
Headphone
– Embedded negative charge pump
– Full capless output configuration
– Driving load capabilities: 40 mW into 32
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
STA381BW
VQFN48
Tray
STA381BWTR
VQFN48
Tape and Reel
May 2013
This is information on a product in full production.
DocID018835 Rev 8
1/174
www.st.com
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