FFX is the evolution and the enlargement of ST’s ternary technology: the new processor can be wtr software b.v to work in ternary, binary, binary differential and phase-shift PWM modulation schemes. The STA350Bx contains the ternary, binary and binary differential implementations, a subset of the full capability of the FFX processor. The STA350Bx power section consists of four independent half-bridges. These can be configured via digital control to operate in different modes.
1 x 40 W of music output power, by using standard 4 and 8 Ω speakers. Two channels can be provided by two full-bridges, providing up to 2 x 50 W of music power, by using standard 6 Ω speaker or 2 x 40 W by using 8 Ω speakers at 25 V. Also provided in the STA350Bx are a full assortment of digital processing features. Special digital signal processing techniques are available in order to manage low-frequency quantization noise in case of very low frequency cutoff filter thresholds. 4 allows the easy implementation of high shelf filters.
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The serial audio data input interface accepts all possible formats, including the popular I2S format. Three channels of FFX processing are provided. This high-quality conversion from PCM audio to FFX PWM switching waveform provides over 100 dB SNR and dynamic range. 1 x 90 W into 3 Ω at 24.
42 dB to -80 dB with 0. Dedicated LFE processing for bass boosting with 0. Extended coefficient dynamic up to -4. Target: Product is in design feasibility stage. Proposal: Marketing proposal for customer feedback. NRND: Not Recommended for New Design. Product is in volume production only to support customers ongoing production.
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