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4-channel digital audio system with FFX driver
  • active 活性

The STA321 is a single chip solution for digital audio processing applications of up to 4.0 channels.

The STA321 is part of the Sound Terminal™ family that together with the digital power stage provides full digital audio streaming to the speaker, offering cost effectiveness, low energy dissipation and sound enrichment.

The STA321 input section consists of two multiplexed stereo analog inputs, a 16-bit ADC and two independent digital input interfaces. The serial audio data input interface accepts all possible formats, including the popular I2S format. There is also a digital output interface fed by the ADC or by the digitally processed signals.

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Errata Sheet
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Key Features

  • High efficiency FFX™ class-D modulator
  • 100-dB dynamic range
  • Two stereo channels with I2S input/output data interface
  • 16-bit stereo ADC input with PGA and microphone biasing
  • Analog and digital muxing/mixing capability
  • 4-channel input sample rate converter (8 kHz to 192 kHz)
  • Four channels of 24-bit audio processing
  • Flexible channel mapping and routing
  • Output configurations:
  • Embedded CMOS bridge: up to 0.5 W/channel
  • pfStart™ for pop-free single-ended operations
  • Play and record simultaneous operation
  • Pre and post mix stages
  • Individual channel and master gain/attenuation
  • Digital gain/attenuation -105 dB to +36 dB in 0.5-dB steps
  • Soft volume update and muting
  • DC-blocking selectable high-pass filter
  • Selectable de-emphasis filter
  • Up to 13 28-bit user programmable biquads (EQ) per channel
  • Bass/treble tone control
  • Ternary, binary or phase shift modulation
  • PWM output
  • Headphone output with jack detector
  • I2C control.

线路 图表

图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DS6082: 4-channel digital audio system with FFX™ driver
3.1 2,127 KB

Application Notes

描述 版本 大小
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

Publications and Collaterals


描述 版本 大小
ST’s solutions for mobile devices
3.2 3,176 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**
STA321TRActiveTQFP 64 10x10x1.4Tape And Reel_-3.199No availability reported, please contact our Sales officeEcopack2-

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(**) 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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