Digital Audio Processor

Digital Audio Processor - TAS3108
Datasheet Errata


The TAS3108 and TAS3108IA are fully programmable high-performance audio processors. The devices use an efficient, custom, multi-instruction programming environment optimized for digital audio processing algorithms. The TAS3108/TAS3108IA architecture provides high-quality audio processing by using a 48-bit data path, 28-bit filter coefficients, and a single-cycle 28 × 48-bit multiplier with a 76-bit accumulator. An embedded 8051 microprocessor provides algorithm and data control for the TAS3108/TAS3108IA. The TAS3108 is the commercial version intended for home audio and other commercial applications. The TAS3108IA is the automotive version that is qualified for use in automotive applications.


  • 8 channel Programmable Audio Digital Signal Processor (DSP)
  • 135-MHz Maximum Speed, >2800 Processing Cycles Per Sample at 48 kHz
  • Sample Rates of 32 kHz to 192 kHz
  • 48-Bit Data Path and 28-Bit Coefficients
  • Single-Cycle, 76-Bit Multiply Accumulate
  • Five Simultaneous Operations Per Clock Cycle
  • 1022 Words of 48-Bit Data Memory
  • 1022 Words of 28-Bit Coefficient Memory
  • 3K Words of 54-Bit Program RAM
  • 5.88K Words of 24-Bit Delay Memory (122.5 ms at 48 kHz)
  • 15 Stereo/TDM Data Formats
  • Independent Input/Output Data Formats
  • 16-, 20-, 24-, and 32-Bit Word Sizes
  • 64-fS, 128-fS, 192-fS, and 256-fS SCLK to Support Discrete 4 channel TDM, 6 channel TDM, and 8 channel TDM Data-Transfer Formats
  • Two I2C Ports for Slave or Master Download
  • Soft Volume Controller
  • Dither Generator
  • Efficient log2/2x Estimator
  • Single 3.3-V Power Supply
  • 38-Pin Thin Shrink Small-Outline Package (TSSOP) (DCP)
  • AEC-Q100 (Grade 2: –40°C to 105°C) Compliant for Automotive Applications (TAS3108IA)
  • Applications
    • Automotive Sound Systems
    • Digital Televisions
    • Home Theater Systems
    • Mini-Component Audio

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