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Home » NEWEST Products » New by Manufacturer » STMicroelectronics » STA311B Multichannel Digital Audio Processor - STM
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STMicroelectronics STA311B Multichannel Digital Audio Processor

STMicroelectronics STA311B Multichannel
Digital Audio Processor

STMicroelectronics STA311B Multichannel Digital Audio Processor is a single-chip solution for digital audio processing and control in multichannel applications and provides output capabilities for FFX™ (full flexible amplification). In conjunction with an FFX™ power device, it provides high-quality, high-efficiency, all digital amplification. The device is extremely versatile, allowing for input of most digital formats including 6.1/7.1-channel and 192kHz, 24-bit DVD-audio, and DSD/SACD. In the 5.1 application the additional 2 channels can be used for audio line-out or headphone drive.

Features
  • 8 channels of 24-bit FFX™
  • >100 dB SNR and dynamic range
  • Selectable 32kHz-192kHz input sampling rates
  • 6 channels of DSD/SACD
  • Digital gain/attenuation +58dB to -100dB in 0.5dB steps
  • Advanced "pop-free" operation
  • Digital "pop-free" operation for single-ended mode
  • Soft volume update
  • Individual channel and master gain/attenuation plus channel trim (-10dB to +10dB)
  • Up to 10 independent 32-bit user-programmable biquads (EQ) per channel
  • Bass/treble tone control
  • Pre- and post-EQ full 8-channel input mix on all 8 channels
  • Dual independent limiters/compressors
  • Dynamic range compression or anti-clipping modes
  • AutoModes
    • 5-band graphic EQ
    • 32 preset EQ curves (rock, jazz, pop, etc.)
    • Automatic volume-controlled loudness
    • 5.1 to 2-channel downmix
    • Simultaneous 5.1- and 2-channel downmix outputs
    • 3 preset volume curves
    • 2 preset anti-clipping modes
    • Preset movie nighttime listening mode
    • Preset TV channel/commercial AGC mode
    • 5.1, 2.1 bass management configurations
    • AM frequency automatic output PWM frequency shifting
    • 8 preset crossover filters

  • Individual channel and master soft/hard mute
  • Automatic zero-detect and invalid input mute
  • Automatic amplifier power-down on clock loss
  • Advanced AM interference frequency switching and noise suppression modes
  • I2S output channel mapping function
  • Independent channel volume and DSP bypass
  • Channel mapping of any input to any processing/FFX channel
  • Selectable per-channel FFX damped ternary or binary PWM output
  • Max power correction for lower full-power THD
  • Variable per-channel FFX output delay control
  • 192kHz internal processing sampling rate, 24-bit to 36-bit precision
Block Diagram
Block Diagram
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