TIDUFC9 May   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Codec Design
      2. 2.2.2 Class-D Amplifier
        1. 2.2.2.1 Audio Filter Design
      3. 2.2.3 Power Design
      4. 2.2.4 EMC, EMI Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 TAC5312-Q1
      2. 2.3.2 TAS5441-Q1
      3. 2.3.3 LMR43620-Q1
      4. 2.3.4 TPS7A52-Q1
      5. 2.3.5 TPD2E007
  9. 3Hardware, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Board Connection
      2. 3.1.2 Configuring the Board
    2. 3.2 Software Requirements
      1. 3.2.1 Firmware for Bench Tests
    3. 3.3 Test Setup
    4. 3.4 Test Results
      1. 3.4.1 Audio Performance
      2. 3.4.2 Power Tests
      3. 3.4.3 EMI, EMC Test Results
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 Bill of Materials
      3. 4.1.3 PCB Layout Recommendations
        1. 4.1.3.1 Layout Prints
      4. 4.1.4 Altium Project
      5. 4.1.5 Gerber Files
      6. 4.1.6 Assembly Drawings
    2. 4.2 Documentation Support
    3. 4.3 Support Resources
    4. 4.4 Trademarks
  11. 5About the Author

2.3.1 TAC5312-Q1

The TAC5312-Q1 is a high-performance stereo codec with 10VRMS differential input, 104dB stereo ADC, and 2VRMS , 114dB stereo DAC channels. The TAC5312-Q1 supports a multitude of input and output configurations such as differential- and single-ended inputs and outputs, both microphone and line-in inputs on the ADC channel, input and output fault diagnostics, and either line out or headphone loads at the DAC output. These parameters enable TAC5312-Q1 to act as an interface between the MCU and speaker amplifiers in various audio applications in the infotainment and cluster fields.

The stereo audio codec supports sampling rates from 8kHz to 768kHz, integrates a programmable high-voltage microphone bias, and input diagnostic circuitry for direct-coupled inputs. The device incorporates diagnostic circuitry designed for detecting and determining the status of input and output connections. The device supports the following diagnostics:

  • Inputs shorted to ground
  • Inputs shorted to MICBIAS
  • Input open circuit
  • Input pins shorted together
  • Input overvoltage detection
  • Inputs shorted to VBAT
  • Output overcurrent detection
  • Output virtual ground detection

The codec also integrates digital volume control, a low-jitter phase-locked loop (PLL), a programmable high-pass filter (HPF), programmable EQ and biquad filters, low-latency filter modes, and secondary audio serial interface (ASI) support. The serial control bus supports the I2C and SPI protocol, whereas the serial audio data bus is programmable for I2S, left-justified or right-justified, or time division multiplexing (TDM) modes.

Where neither analog nor digital signal processing are required, the device can be put in a special analog signal bypass mode. This mode significantly reduces power consumption, because most of the device is powered down during this bypass operation. These high-performance features along with a single, 3.3V supply operation, makes TAC5312-Q1 an excellent choice for space-constrained automotive systems.

TIDA-060048 TAC5312-Q1 Functional Block DiagramFigure 2-6 TAC5312-Q1 Functional Block Diagram
TIDA-060048 TAC5312-Q1 Simplified DiagramFigure 2-7 TAC5312-Q1 Simplified Diagram