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STA309A

Multi-channel digital audio processor with DDX®
  • active Active

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.

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Errata Sheet
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Datasheet

Key Features

  • 8 channels of 24-bit DDX® (direct digital amplification)
  • >100 dB of SNR and dynamic range
  • Selectable 32 kHz - 192 kHz input sample rates
  • 6 channels of DSD/SACD input
  • Digital gain/attenuation +58 dB to -100 dB in 0.5-dB steps
  • Soft volume update
  • Individual channel and master gain/attenuation plus channel trim (-10 dB to +10 dB)
  • 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
  • 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
  • Individual channel and master soft/hard mute
  • Automatic zero-detect and invalid input mute
  • Automatic invalid input detect mute
  • Advanced PopFree operation
  • 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/DDX® channel
  • DC blocking selectable high-pass filter
  • Selectable per-channel DDX® damped ternary or binary PWM output
  • Max power correction for lower full-power THD
  • Variable per channel DDX® output delay control
  • 192 kHz internal processing sample rate, 24-bit to 36-bit precision

Circuit Diagram

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS5443: Multi-channel digital audio processor with DDX®
4.1 592 KB

Application Notes

Description Version Size
pdf
AN2874: BQD filter design equations
1.1 65 KB
pdf
AN3340: Loudspeaker characterization and compensation
1.2 3,944 KB
pdf
AN4118: APWLink USB interface board for Sound Terminal® demonstration boards
2.0 1,029 KB

User Manual

Description Version Size
pdf
UM1545: Using the Audio Processor Workbench (APWorkbench)
1.0 3,221 KB

Presentations & Training Material

Training Material

Description Version Size
pdf
Learn the basics about STSpeakerSafe technology
1.0 181 KB

Publications and Collaterals

Brochure

Description Version Size
pdf
ST’s solutions for mobile devices
1.0.0 2,217 KB

Sample & Buy

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Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STA309AActiveLQFP 64 10x10x1.4Tray_-3No availability reported, please contact our Sales officeEcopack1PDF
XML
STA309A13TRActiveLQFP 64 10x10x1.4Tape And Reel_Free Samples3Distributor reported inventory date: 2014-09-15
Distributor NameRegionStockMin. order
DIGIKEYOrder NowWORLDWIDE26541
MOUSEROrder NowWORLDWIDE5941
Ecopack1PDF
XML

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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