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
Applications
! LCD
®
! 2 channels of 24-bit DDX
! 100 dB SNR and dynamic range
! DVD
! Selectable 32 kHz to 192 kHz input sample
! Cradle
rates
2
! Digital speaker
! Wireless speaker cradle
! I C control with selectable device address
! Digital gain/attenuation +48 dB to -80 dB steps
! Software volume update
Description
! Individual channel and master gain/attenuation
The STA333W is an integrated solution of digital
audio processing, digital amplifier control, and
! Individual channel and master software and
hardware mute
®
DDX -power output stage, thereby creating a
! Independent channel volume bypass
! Automatic zero-detect mute
®
high-power single-chip DDX solution comprising
of high-quality, high-efficiency, all digital
amplification.
! Automatic invalid input detect mute
2
! 2-channel I S input data Interface
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.
! Selectable clock input ratio
! Input channel mapping
! Variable max power correction for lower
fullpower
Also provided in the STA333W are new advanced
AM radio interference reduction modes. The serial
audio data input interface accepts all possible
! 96 kHz internal processing sample rate, 24-bit
precision
2
formats, including the popular I S format.
! Advanced AM interference frequency
switching and noise suppression modes
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.
! Thermal overload and short-circuit protection
embedded
! Video application: 576 x fs input mode support
Table 1. Device summary
Part number
Package
PowerSSO36 (slug down)
Packing
STA333W
Tube
STA333W13TR
PowerSSO36 (slug down)
Tape and reel
May 2007
Rev 1
1/42
www.st.com
42