STA333W Datasheet, PDF (1/42 Pages) STMicroelectronics – 2-channel high-efficiency digital audio system

STA333W
2-channel high-efficiency digital audio system
Features
! Wide supply voltage range (4.5 V - 18 V)
! 2 power output configurations
– 2 channels of binary PWM (stereo mode)
– 2 channels of ternary PWM
PowerSSO36 slug (or exposed pad) down
! Power SSO-36 slug down package
! 2 channels of 24-bit DDX^®
! 100 dB SNR and dynamic range
! Selectable 32 kHz to 192 kHz input sample
rates
! I²C control with selectable device address
! Digital gain/attenuation +48 dB to -80 dB steps
Applications
! LCD
! DVD
! Cradle
! Digital speaker
! Wireless speaker cradle
! Software volume update
! Individual channel and master gain/attenuation
! Individual channel and master software and
hardware mute
! Independent channel volume bypass
! Automatic zero-detect mute
! Automatic invalid input detect mute
! 2-channel I²S input data Interface
! Selectable clock input ratio
! Input channel mapping
! Variable max power correction for lower
fullpower
! 96 kHz internal processing sample rate, 24-bit
precision
! Advanced AM interference frequency
switching and noise suppression modes
! Thermal overload and short-circuit protection
embedded
! Video application: 576 x fs input mode support
Table 1. Device summary
Description
The STA333W is an integrated solution of digital
audio processing, digital amplifier control, and
DDX^®-power output stage, thereby creating a
high-power single-chip DDX^® solution comprising
of high-quality, high-efficiency, all digital
amplification.
The STA333W power section consists of four
independent half-bridges. These can be
configured via digital control to operate in different
modes. 2 channels can be provided by two
full-bridges, providing up to 2 x 20 W of power.
Also provided in the STA333W are new advanced
AM radio interference reduction modes. The serial
audio data input interface accepts all possible
formats, including the popular I²S format.
The STA333W is part of the Sound Terminal™
family that provides full digital audio streaming to
the speaker offering cost effectiveness, low power
dissipation and sound enrichment.
Part number
Package
Packing
STA333W
STA333W13TR
PowerSSO36 (slug down)
PowerSSO36 (slug down)
Tube
Tape and reel
May 2007
Rev 1
1/42
www.st.com
42