Features
„ Wide supply-voltage range (4.5 V - 20 V)
„ 2 power output configurations
– 2 channels of binary PWM (stereo mode)
– 2 channels of ternary PWM (stereo mode)
„ PowerSSO-36 with exposed pad down
„ 2 channels of 24-bit DDX®
„ 100-dB SNR and dynamic range
„ Selectable 32- to 192-kHz input sample rates
„ I2C control with selectable device address
„ Digital gain -80 dB to +48 dB in 0.5-dB steps
„ 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
„ Automatic volume control for limiting maximum power
„ 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 * fS input mode support

Applications
„ LCD
„ DVD
„ Cradle
„ Digital speaker
„ Wireless-speaker cradle

Description
The STA333W is an integrated circuit comprising
digital audio processing, digital amplifier control
and DDX® power output stage to create a highpower, single-chip DDX® solution for all-digital
amplification with high quality and high efficiency.
The STA333W power section consists of four
independent half-bridges stages. These can be
configured via digital control to operate in different
modes. 2 channels can be provided by two full
bridges, providing up to 20 W + 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. Three
channels of DDX® processing are provided.
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.