Automotive Audio I2S over Coax Class D Amplifier Reference Design
TIDA-00223
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Description

This reference design is an I²S/TDM-based, low-cost, easy-to-use alternative to fiber optics/analog copper wire for connecting an automotive (sound) control panel to an output stage/power amplifier. Supporting I²S as well as TDM, it is capable of transmitting digital audio signal to 16 independent channels of speakers with each channel output of 80W at 4Ω. It also supports bidirectional communication with the control unit or processor via I²C, over a single shielded twisted pair (STP) or coaxial. Furthermore, the TIDA-00223 reference design enables fast implementation with power supply included, and it has all the protection and diagnostics requirements needed in modern cars.

Features
  • Wide input voltage range: off battery 6V to 40V power supply
  • The design consists of two boards:
    * SAT0084 (FPD-LINK III and audio amplifier)
    * SAT0085 (600W power solution)
  • Audio Serializer/Deserializer support I2S and TDM audio for up to 16 audio channels
  • Audio plus bidirectional I²C and GPIO control over a single STP or coaxial cable, eliminating the need for a local microcontroller
  • Power over Coax to run distributed microphone

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TI Devices (10)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CD4017B  CMOS Decade Counter with 10 Decoded Outputs  Specialty logic  Sample & Buy View Design Kits & Evaluation Modules
DS90UA101-Q1  Automotive Multi-Channel Digital Audio Serializer  FPD-Link SerDes  Sample & Buy View Design Kits & Evaluation Modules
DS90UA102-Q1  Multi-Channel Digital Audio Deserializer  FPD-Link SerDes  Sample & Buy View Design Kits & Evaluation Modules
LM2936Q-Q1  Ultra-Low Quiescent Current LDO Voltage Regulator  Power management  Sample & Buy Not Available
LM34919C-Q1  Automotive 4.5-50V Wide Vin 600mA 2.6MHz Ultra-Small Constant On-Time Non-Synchronous Buck Regulator  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LM5001-Q1  Automotive Grade 3.1-75V Wide Vin, 1A Current Mode Non-Synchronous Switch Mode Regulator  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
LM5122-Q1  Automotive Grade, 3-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capabili  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
MSP430F2252  16-bit Ultra-Low-Power Microcontroller, 16KB Flash, 512B RAM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
PCM5102A-Q1  Automotive Catalog 2VRMS DirectPath™, 112dB Audio Stereo DAC with 32-bit, 384kHz PCM Interface  Audio converters  Sample & Buy View Design Kits & Evaluation Modules
TPS793-Q1  Ultralow Noise High PSRR Fast RF 200-mA Low-Dropout Linear Regulators for Automotive  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CD4017B Download Download
Download -
Download Download
Download Download
Download Download
DS90UA101-Q1 Download
DS90UA102-Q1 Download
LM2936Q-Q1 Download
Download
Download Download
Download
LM34919C-Q1 Download Download
LM5001-Q1 Download
LM5122-Q1 Download
MSP430F2252 Download -
Download Download
Download -
PCM5102A-Q1 Download
TPS793-Q1 Download
Download Download

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Technical Documents

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User guides (2)
Title Type Size (KB) Date
PDF 257 29 Jul 2014
PDF 607 29 Jul 2014
Design files (15)
Title Type Size (KB) Date
ZIP 4191 29 Jul 2014
ZIP 363 29 Jul 2014
PDF 2799 29 Jul 2014
PDF 407 29 Jul 2014
PDF 376 29 Jul 2014
ZIP 11628 29 Jul 2014
ZIP 1154 29 Jul 2014
PDF 7074 29 Jul 2014
PDF 664 29 Jul 2014
PDF 721 29 Jul 2014
PDF 728 29 Jul 2014
PDF 115 29 Jul 2014
PDF 197 29 Jul 2014
PDF 231 29 Jul 2014
PDF 392 29 Jul 2014

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