STA370BWS Datasheet, PDF (1/5 Pages) STMicroelectronics – 2.1-channel 40-W high-efficiency digital audio system Sound Terminal™

STA370BWS
2.1-channel 40-W high-efficiency digital audio system
Sound Terminal™
Data brief
Features
„ Wide-range supply voltage, 7.0 V to 21.5 V
„ Three power output configurations:
– 2 channels of ternary PWM
(2 x 20 W into 8 Ω at 18 V) + PWM output
– 2 channels of ternary PWM
(2 x 20 W into 8 Ω at 18 V) + ternary stereo
line-out
– 2.1 channels of binary PWM (left, right,
LFE) (2 x 9 W into 4 Ω + 1 x 20 W into 8 Ω
at 18 V)
„ Load-driving capabilities:
– 11 W into 6 Ω at 14 V, ternary
– 20 W into 4 Ω at 14 V, ternary
„ FFX with 100-dB SNR and dynamic range
„ Scalable FFX modulation index (up to 100%)
„ Selectable 32- to 192-kHz input sample rates
„ I²C control with selectable device address
„ Digital gain/attenuation +48 dB to -80 dB with
step resolution:
– 0.125 dB/step from -60 dB to +48 dB
– 0.25 dB/step from -80 dB to -60 dB
„ Soft volume update with programmable ratio
„ Individual channel and master gain/attenuation
and soft/hard mute.
„ Two independent DRCs configurable as a
dual-band anti-clipper (B²DRC) or as
independent limiters/compressors with
optional global DRC capability
„ 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 night-time listening mode
„ I²S input data interface
PowerSSO-36
with exposed pad down (EPD)
„ Input and output channel mapping
„ Programmable zero-detect mute
„ Automatic invalid input-detect mute
„ Up to 8 user-programmable biquads/channel
„ Three coefficients banks for EQ presets storing
with fast recall via I²C interface
„ Extended filter dynamics +4/-4 for better sound
shaping and easier filter implementation
„ Bass/treble tones and de-emphasis control
„ Selectable high-pass filter for DC blocking
„ Advanced AM interference frequency
switching and noise suppression modes
„ F3X™ advanced PWM modulation scheme for
carrier suppression (headphone or line output)
„ Selectable high- or low-bandwidth
noise-shaping topologies
„ 96-kHz internal processing sample rate with
quantization error noise shaping for very low
cut-off frequency filters
„ Full short-circuit protection at device power-up
„ Coefficient checksum with software reset
capabilities
Table 1. Device summary
Order code
Package
Packing
STA370BWS PowerSSO-36 EPD Tube
STA370BWSTR PowerSSO-36 EPD Tape and reel
December 2009
Doc ID 16884 Rev 1
For further information contact your local STMicroelectronics sales office.
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