Intelligent Digital Amplifier and Sound Processor

Product Status: Mass Production


The D2-6 family (D2-71083, D2-74083, D2-71583, D2-74583, and D2-74383) digital audio processor devices are complete System-on Chip (SoC) audio processor and Class-D amplifier controllers. Integrated DSP processing and configurable audio processing algorithms provide an extremely flexible platform for feature rich and cost-effective quality audio solutions which benefit from the addition of Class-D amplifiers and DSP audio processing, meeting demands of consumer electronics applications.

The 12 integrated digital PWM controllers can be used in a variety of multi-channel audio system configurations, supporting powered as well as line outputs. Fully protected amplifier control provides efficient and clean Class-D power output support.

The D2-6 device family supports full audio decoding for formats including Dolby® Digital, Dolby® Pro Logic IIx, AAC LC™, DTS® Digital Surround, and Dolby® Digital Plus. The D2-6 family is pin-compatible and function/feature compatible with the D2-3 family devices, enabling additional decoding capability to existing designs, or providing cost optimization to lower-featured systems not requiring the additional audio processing and decode capability.


  • Advanced D2-6 family digital audio processor IC
    • Pin compatible and function/feature compatible with the D2 Audio DSP D2-3 family device
  • Total System on Chip (SoC)
    • All digital Class-D amplifier controller
    • Full 5.1/7.1/9.1-channel amplifier platform support
  • Enhanced audio processing decoders
    • Dolby® Digital/AC3
    • Dolby® Pro Logic IIx
    • AAC LC™
    • DTS® Digital Surround
    • Dolby® Digital Plus
  • D2 Audio DSP sound enhancement algorithm and virtualization
  • Expanded on-chip memory capacity
  • Integrated DSP processing
    • 12 channels of Digital Signal Processing (DSP) including equalizers, filters, mixers and other common audio processing blocks
    • Fully configurable and routable audio signal paths
  • Flexible audio input and output configurations
  • Embedded 8-channel sample rate converter
    • Sample rates from 32kHz up to 192kHz
  • Real-time amplifier control and monitoring
    • Supports bridged, half-bridged, and Bridge-Tied Load (BTL) topologies, using discrete or integrated power stages from 10W to over 500W
    • Complete fault protection with automatic recovery



  • Audio Video Receiver (AVR)
  • Multi-channel surround soundbar
  • Home Theater in a Box (HTiB)
  • Multi-channel Multi-Media (MM) systems
  • Installed steerable audio arrays
  • Bluetooth/WiFi voice-enabled speaker systems
  • Automotive trunk/amplified solutions


 Block Diagram


Basic Information
Production Status
Mass Production
Input Channels
PWM Output Channels
Signal Flow
Supported Decoders
Supported Audio Inputs
4x I2S, 2x S/PDIF, HDA, ADC (opt), 8x fault INT
Supported Audio Outputs
12x PWM, 4x I2S, 1x S/PDIF
D2 Audio PWM Engine, Graceful Fault Recovery, D2 Audio Sound Enhancement, 160 MHz DSP, 56k P-memory
D2 Audio DSP Customization GUI
Qualification Level
Temperature Range
0 to +70

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