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Multi-channel digital audio processor with DDX®
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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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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

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图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DS5443: Multi-channel digital audio processor with DDX®
4.1 592 KB

Application Notes

描述 版本 大小
AN2874: BQD filter design equations
1.1 65 KB
AN3340: Loudspeaker characterization and compensation
1.3 3,944 KB
AN4118: APWLink USB interface board for Sound Terminal® demonstration boards
2.0 1,029 KB

User Manual

描述 版本 大小
UM1545: Using the Audio Processor Workbench (APWorkbench)
1.0 3,221 KB

Presentations & Training Material

Training Material

描述 版本 大小
Learn the basics about STSpeakerSafe technology
1.0 181 KB

样品 & 购买

产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STA309A13TRActiveLQFP 64 10x10x1.4Tape And Reel_Free Samples3Distributor reported inventory date: 2015-11-26
Distributor NameRegionStockMin. order

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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