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The STA328 is an integrated solution of digital au-
dio processing, digital amplifier control, and DDX-
Power Output Stage, thereby creating a high-pow-
er single-chip DDX廬 solution comprising of high-
quality, high-efficiency, all digital amplification.
The STA328 power section consists of four inde-
pendent half-bridges. These can be configured via
digital control to operate in different modes. 2.1
channels can be provided by two half-bridges and
a single full-bridge, providing up to 2x40W +
1x80W of power output. 2 Channels can be provid-
ed by two full-bridges, providing up to 2x80W of
power. The IC can also be configured as a single
paralelled full-bridge capable of high-current oper-
ation and 1x160W output.
Also provided in the STA328 are a full assortment
of digital processing features. This includes up to
4 programmable 28-bit biquads (EQ) per channel,
Rev. 3
1/41
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Input and Output Channel Mapping
AM Noise Reduction and PWM Frequency
Shifting Modes
Soft Volume Update and Muting
Auto Zero Detect and Invalid Input Detect
Muting Selectable DDX廬 Ternary or Binary
May 2006
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