Intelligent Digital Amplifier and Sound Processor

Product Status: Mass Production


The D2-3(S) family (D2-92633-LR, D2-92634-LR, D2-92643-LR, D2-92683-QR, D2-92684-QR) of the D2-3 and D2-3S Digital Audio Processor devices are complete System on Chip (SoC) multi-channel digital sound processors and Class-D amplifier controllers.

The integrated DSP provides efficient and configurable audio signal path processing including equalization, dynamic range compression, mixing, and filtering that is completely configurable using the D2 Audio Customization GUI v3 high level programming interface. The integrated PWM engine supports programmable and dynamic control of audio output, enabling a variety of multi-channel output configurations and output power capacity. Internal noise shaping, an embedded asynchronous sample rate converter, dynamic level-dependent timing, and high resolution operation support power stage audio performances with SNR >110dB and THD+N <0.01%.

The D2-3(S) devices are provided in two package and feature configurations which include the 128 Ld D2-3 family and the 72-pin D2-3S family. Both the D2-3 and D2-3S family provide identical performance and enable an extremely flexible platform for feature rich and cost-affordable quality audio solutions, which benefit from the addition of Class-D amplifiers and DSP audio processing.

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.


  • Advanced D2-3 family Digital Audio Processor IC family
    • D2-3 family pin compatible and function/feature compatible with the D2 Audio DSP D2-6 device family
    • D2-3S family - identical D2-3 family performance, in a 72 Ld QFN package
  • Integrated Digital Sound Processing (DSP)
    • Customizable audio path sound processing
    • Fully configurable and routable audio signal paths and hardware function assignment
    • Fully supported with the D2 Audio Customization GUI v3 Design Tool
  • Flexible audio input and output configurations
    • 12 independent PWM engine channels
    • Four independent asynchronous I2S digital inputs
    • Integrated high-performance stereo ADC (D2-3 family only)
    • S/PDIF™ digital audio inputs supporting linear IEC-61958 PCM or compressed IEC-61937 audio
    • S/PDIF digital audio PCM output
  • Embedded 8-channel sample rate converter
  • Real-time amplifier control and monitoring
    • Supports bridged, half-bridged, and Bridge-Tied Load (BTL) topologies, using discrete or integrated power stages
    • Complete fault protection with automatic recovery
  • D2 Audio DSP Sound Enhancement Algorithms and virtualization
  • Enhanced audio processing decoders and virtualization
    • Dolby® Digital/AC3
    • Dolby® Pro Logic IIx
    • Dolby® Virtual Speaker
    • DTS®(SRS) TruSurround HD4™, DTS®(SRS) WOW HD™, DTS®(SRS) TruVolume™



  • DTV and Blu-ray Soundbar
  • DVD and Blu-ray Home Theater Systems
  • Home Theater in a Box (HTiB)
  • Audio Video Receiver (AVR)
  • Multi-Channel Multi-Media (MM) Systems
  • Multi-Room Distributed Audio (MRDA)
  • Powered speaker systems
  • Automotive trunk/amplified solutions


 Block Diagram


Basic Information
Production Status
Mass Production
Input Channels
PWM Output Channels
Signal Flow
Supported Audio Inputs
4x I2S, 1x S/PDIF, 8x fault INT
Supported Audio Outputs
12x PWM, 1x I2S, 1x S/PDIF
D2Audio PWM Engine, Graceful Fault Recovery, 147 MHz DSP
D2 Audio DSP Customization GUI
Qualification Level
Temperature Range
See Datasheet