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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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STA323W Fiches technique(PDF) 10 Page - STMicroelectronics |
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STA323W Fiches technique(HTML) 10 Page - STMicroelectronics |
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10 / 77 page  Description STA323W 10/77 1 Description The STA323W is a single-chip audio system comprising digital audio processing, digital amplifier control and a DDX® power-output stage. The STA323W uses all-digital amplification to provide high-power, high-quality and high-efficiency. The STA323W power section consists of four independent half-bridges. These can be configured, by digital control, to operate in the following modes. " Two channels, provided by two half-bridges, and a single full-bridge giving up to 2 x 10 W + 1 x 20 W of power output. " Two channels, provided by two full-bridges, giving up to 2 x 20 W of power. " A single, parallel, full-bridge channel capable of high-current operation and giving 1 x 40W output. The STA323W also provides a full set of digital processing features. This includes up to four programmable 28-bit biquads (EQ) per channel, and bass and treble tone control. AutoModes™ enable a time-to-market advantage by substantially reducing the amount of software development needed for specific functions. These includes auto volume loudness, preset volume curves and preset EQ settings. New advanced AM radio-interference reduction modes are also provided. The serial audio data input interface accepts all existing formats, including the I2S. Three channels of DDX® processing are provided. This high-quality conversion from PCM audio to DDX patented 3-state PWM switching provides over 100 dB of SNR and dynamic range. Figure 1. Block diagram Figure 2. Channel signal flow diagram through the digital core Quad half-bridge power stage DDX processing crossover, volume, limiter processing Audio EQ, mix, input, channel mapping and resampling Serial data OUT1A Power down OUT1B OUT2A OUT2B EAPD FAULT TWARN Power down System timing CLK I2C System control SCL SDA LRCKI BICKI SDI_12 Channel mapping Re-sampling ED processing I2S input Mix DDX Crossover filter Volume limiter 4x Interpol DDX output |
Numéro de pièce similaire - STA323W |
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Description similaire - STA323W |
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