The STA333BW is an integrated solution of digital audio processing, digital amplifiercontrols and power output stages to create a high-power single-chip FFX digital amplifierwith high-quality and high-efficiency. Three channels of FFX processing are provided. TheFFX processor implements the ternary, binary and binary differential processing capabilitiesof the full FFX processor.The STA333BW is part of the Sound Terminal® family that provides full digital audiostreaming to the speakers and offers cost effectiveness, low power dissipation and soundenrichment.The power section consists of four independent half-bridges. These can be configured viadigital control to operate in different modes.For example, 2.1 channels can be provided by two half-bridges and a single full-bridge,supplying up to 2 x 9 W + 1 x 20 W of output power or two channels can be provided by twofull-bridges, supplying up to 2 x 20 W of output power.The IC can also be configured as 2.1 channels with 2 x 20 W supplied by the device plus adrive for an external FFX power amplifier, such as STA533WF or STA515W.The serial audio data input interface accepts all possible formats, including the popular I²Sformat. The high-quality conversion from PCM audio to FFX PWM switching provides over100 dB of SNR and of dynamic range.Also provided in the STA333BW are a full assortment of digital processing features. Thisincludes up to 5 programmable biquads (EQ) per channel. Available presets enable atime-to-market advantage by substantially reducing the amount of software developmentneeded for functions such as audio preset volume loudness, preset volume curves andpreset EQ settings. There are also new advanced AM radio interference reduction modes.The DRC dynamically equalizes the system to provide a linear frequency speaker responseregardless of output power level.