STA309A

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Multi-channel digital audio processor with DDX®

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Overview

Product overview

Description

Description

The STA309A is a single chip solution for digital audio processing and control in multi-channel applications. It provides output capabilities for DDX®. In conjunction with a DDX® power device, the STA309A provides high-quality, high-efficiency, all digital amplification. The device is extremely versatile, allowing inputs of most digital formats including 6.1/7.1-channel and 192 kHz, 24-bit DVD-audio, DSD/SACD. In 5.1 applications the additional 2 channels can be used for audio line-out or headphone drive. In speaker mode, with 8 channel outputs in parallel, the STA309A can deliver more than 1 W.

  • All features

    • Pre and post EQ full 8-channel input mix on all 8 channels
    • Bass/treble tone control
    • Dynamic range compression
    • Dual independent limiters/compressors
    • Individual channel and master soft/hard mute
    • Automode™:5-band graphic EQ32 preset EQ curves (rock, jazz, pop, etc.)Automatic volume controlled loudness5.1 to 2-channel downmixSimultaneous 5.1- and 2-channel downmix outputs3 preset volume curves2 preset anti-clipping modesPreset movie nighttime listening modePreset TV channel/commercial AGC mode5.1, 2.1 bass management configurations8 preset crossover filters
    • Automatic invalid input detect mute
    • Automatic zero-detect and invalid input mute
    • Advanced PopFree operation
    • I2S output channel mapping function
    • Advanced AM interference frequency switching and noise suppression modes
    • Channel mapping of any input to any processing/DDX® channel
    • Independent channel volume and DSP bypass
    • Selectable per-channel DDX® damped ternary or binary PWM output
    • DC blocking selectable high-pass filter
    • Variable per channel DDX® output delay control
    • Max power correction for lower full-power THD
    • 192 kHz internal processing sample rate, 24-bit to 36-bit precision
    • Individual channel and master gain/attenuation plus channel trim (-10 dB to +10 dB)
    • Soft volume update
    • 8 channels of 24-bit DDX® (direct digital amplification)
    • Selectable 32 kHz - 192 kHz input sample rates
    • >100 dB of SNR and dynamic range
    • Digital gain/attenuation +58 dB to -100 dB in 0.5-dB steps
    • Up to 10 independent 32-bit user programmable biquads (EQ) per channel
    • 6 channels of DSD/SACD input

Circuit Diagram

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The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Marketing description of the package type.Compliancy of the device with industry requirement domains (IRD)The RoHS status of a product:
ECOPACK 1: Initial grade to identify European RoHS compliant products.
ECOPACK 2: New grade to identify brominated chlorinated and antimony oxide flame retardant free products.
ECOPACK 3: Halogen free RoHS exemptions free products.
(*): ECOPACK 2 version available upon request.
(**): Some versions still existing in ECOPACK 1 or not compliant.The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Budgetary PriceMarketing description of the package type.Storage method used to contain product.Main country of assembly or fabrication of the product.ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes. ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.