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Home » NEWEST Products » New by Category » Semiconductors » Multimedia ICs » STM STA321 Digital Audio System
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STMicroelectronics STA321
4-Channel Digital Audio System

STMicroelectronics' STA321 4-Channel Digital Audio System is a single chip solution for digital audio processing applications. The STA321 4-Channel Digital Audio System 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. STMicroelectronics' STA321 4-Channel Digital Audio System input section consists of two multiplexed stereo analog inputs, a 16-bit ADC and two independent digital input interfaces. There is also a digital output interface fed by the ADC or by the digitally processed signals. The STA321 4-Channel Digital Audio System has a full assortment of digital processing features that include a sample rate converter, pre and post mixing, up to 13 programmable 28-bit biquads (EQ) per channel, bass/treble tone control and DRC.

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:
2.0
2.1
4.0
Mono
  • 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

Additional Resources

Datasheet
STA321 Product Info
Block Diagram
Block Diagram
  • STMicroelectronics
  • Semiconductors|Integrated Circuits|IC-Multimedia