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Texas Instruments TAC5311-Q1 Automotive Mono Audio Codec

Texas Instruments TAC5311-Q1 Automotive Mono Audio Codec is a low-power mono codec with 10VRMS differential input, 104dB ADC, and 2VRMS differential output, 114dB DAC. This audio codec supports both differential and single-ended inputs and outputs. The TAC5311-Q1 codec offers an integrated high-voltage, programmable microphone bias and input diagnostic circuitry connecting microphone-based automotive systems with full fault diagnostic capability for direct-coupled inputs. This audio codec operates at a 3V to 10V programmable microphone bias with an integrated efficient boost converter or an external high voltage HVDD supply. The TAC5311-Q1 devices are AEC-Q100 qualified for automotive applications. Typical applications include emergency call-e-call, telematics control units, automotive active noise cancellations, and automotive head units.

The TAC5311-Q1 codec supports Time-Division Multiplexing (TDM), I2S, or Left-justified (LJ) audio formats and can be controlled with I2C or SPI. This device includes low-latency and ultra-low-latency decimation/interpolation filter options.

Features

  • AEC-Q100 qualified for automotive applications
    • -40°C ≤ TA ≤ +125°C temperature grade 1
  • Mono audio ADC channel:
    • Performance:
      • 104dB line/microphone differential input dynamic range
      • -95dB differential input THD+N
      • Channel summing mode supports high SNR: 107dB
    • Input voltage:
      • Differential, 10VRMS full-scale inputs
      • Single-ended, 5VRMS full-scale inputs
    • ADC sample rate (fS) = 4kHz to 768kHz
    • Programmable microphone bias (3V to 10V):
      • With an integrated efficient boost converter, or
      • With external high voltage HVDD supply
    • Programmable microphone input fault diagnostics:
      • Open inputs or shorted inputs
      • Short to ground, MICBIAS or VBAT
      • MICBIAS over current protection
  • Mono audio DAC channel:
    • Performance:
      • 114dB DAC to differential line-out DR
      • 108dB DAC to single-ended headphone-out DR
      • -96dB THD+N
    •  Headphone/Line-out output voltage:
      • Differential, 2VRMS full-scale
      • Single-ended, 1VRMS full-scale
    • 4kHz to 768kHz DAC sample rate (fs)
  • Low-latency and ultra-low-latency decimation/ interpolation filter options
  • Programmable HPF and Biquad filters– I2C or SPI control interface
  • Audio serial interface:
    • TDM, I2S, or left-justified (LJ) format
    • 16, 20, 24, or 32-bits word length
  • Programmable PLL for flexible clocking
  • Low power modes
  • 3.3V single supply operation AVDD
  • 1.2V, 1.8V, or 3.3V I/O supply operation

Applications

  • Emergency call-e-call
  • Telematics control unit
  • Automotive active noise cancellation
  • Automotive head units

Simplified Block Diagram

Block Diagram - Texas Instruments TAC5311-Q1 Automotive Mono Audio Codec

Additional Resource

Published: 2025-01-28 | Updated: 2025-05-06