STA333ML Datasheet, PDF (1/15 Pages) STMicroelectronics – Sound Terminal TM 2 channel microless high efficiency digital audio system

STA333ML
Sound Terminal^TM
2 channel microless high efficiency digital audio system
Target Specification
Features
■ Wide supply voltage range (4.5-18 V)
■ 2 x 20 W @ 8 Ω, Vcc = 18 V
■ 3 power output configurations; 2 channels of
ternary PWM
■ PowerSSO-36 exposed pad package
■ 2 channels of 24-Bit DDX®
■ 100 dB SNR and dynamic range
■ 32 kHz to 48 kHz input sample rates
■ Soft volume update
■ Automatic zero-detect mute
■ Automatic invalid input detect mute
■ 2-channel I²S input data interface
■ Selectable clock input ratio (256 / 364 Fs)
■ Max power correction for lower full power
■ 96 kHz internal processing sample rate, 24-bit
precision
■ Thermal overload and short-circuit protection
embedded
Applications
■ LCD
■ DVD
■ Cradle
■ Digital speaker
■ Wireless speaker cradle
Order codes
PowerSSO36 slug down
Description
STA333ML is a single die embedding digital audio
processing and high efficiency power
amplification, capable of operating without the aid
of an external micro controller.
The STA333ML is part of the Sound Terminal^TM
family that provides full digital audio streaming to
the speaker offering cost effectiveness, low
energy dissipation and sound enrichment.
The STA333ML combines a unique 24-bit DDX®
digital Class-D ternary modulator together with an
extremely low RDSON stereo power Dmos stage.
The latter is capable of a total output power of
2 x 20 W with outstanding performances in terms
of efficiency (>90 %), THD, SNR and EMI.
The microless feature allows the use in low cost
applications (cradle, digital speakers, audio
terminals) where no micro controller is needed.
The serial audio data interface accepts the world
wide used I²S format; basic features (for example,
oversampling clock, gain, I²S format) can be set
using a minimal number of selection pins.
STA333ML is self-protected against thermal
overload, overcurrent, short circuit and
overvoltage conditions.
The fault condition is also exported to an external
pin (INT-LINE) for specific requirements.
Part number
STA333ML
STA333ML13TR
Package
PowerSSO36 (slug down)
PowerSSO36 (slug down)
Packing
Tube
Tape and reel
February 2007
Rev 1
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
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