Automotive Ultrasonic Fluid Level/Quality Measurement Reference Design
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Key Document


TI reference design TIDA-00322 is an automotive liquid level and fluid identification measurement system. It is based on the dual-channel TDC1000-Q1 ultrasonic AFE and the real-time microcontroller C2000. This reference design can also be used with the TDC1000 for industrial/consumer applications. This solution supports 4.5-40V system capabilities with reverse battery protection. 

For prototyping and signal accessibility for product development, TI recommends using the TDC1000-C2000EVM as the hardware evaluation platform for automotive designs. For industrial or consumer designs, it is recommended to begin evaluation with the TDC1000-TDC7200EVM. This EVM has the ability of using the MSP430 or the TDC7200 as the stop-watch timer; usage of each depends on the time of flight accuracy requirement of the application.

  • Dual Channel Analog-front-end for ultrasonic sensing
  • High voltage circuit to drive the transducer with 30V to penetrate deeper tanks
  • Input voltage range of 6V to 40V with reverse battery protection
  • Automotive qualified Bill of Material
  • External RTD Measurement  to monitor temperature changes that affect the medium's speed of sound
  • CAN transceiver for flexibility of adding future CAN stack

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Schematic/Block Diagram

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Design Files

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
HVDA551-Q1  Automotive 5-V CAN Transceiver with I/O Level Adapting and Low-Power Mode Supply Optimization  Interface  Sample & Buy Not Available
SN74LVC1G32-Q1  Automotive Catalog Single 2-Input Positive-OR Gate  Gate  Sample & Buy View Design Kits & Evaluation Modules
TDC1000  Ultrasonic sensing analog front end for level and concentration sensing  Specialty sensors  Sample & Buy View Design Kits & Evaluation Modules
TDC1000-Q1  Automotive Ultrasonic Sensing Analog Front End for Level and Concentration Sensing  Specialty sensors  Sample & Buy View Design Kits & Evaluation Modules
TMS320F28035  C2000™ 32-bit MCU with 60 MHz, 128 KB Flash, CLA  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TPS54260-Q1  Automotive 3.5V to 60V, 2.5A Step-down Converter with Eco-Mode™  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
TPS61170-Q1  Automotive 3V to 18V Wide Input Range, 1.2A Boost Converter in 2x2mm QFN Package  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules
TPS79501-Q1  Automotive 500-mA, adjustable low-dropout voltage regulator with enable  Power management  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
HVDA551-Q1 Download Download
SN74LVC1G32-Q1 Download Download
Download Download
TDC1000 Download Download
TDC1000-Q1 Download
TMS320F28035 Download Download
Download Download
Download Download
TPS54260-Q1 Download Download
TPS61170-Q1 Download Download
TPS79501-Q1 Download Download

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Technical documentation

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User guide (2)
Title Type Size (KB) Date
PDF 489 26 May 2015
PDF 1610 23 Oct 2014
Design files (5)
Title Type Size (KB) Date
ZIP 388 23 Oct 2014
ZIP 409 23 Oct 2014
ZIP 236 23 Oct 2014
PDF 98 23 Oct 2014
PDF 205 23 Oct 2014
Related Tools & Software

Hardware development (1)

Name Part Number Tool Type
Ultrasonic Sensing for Level and Concentration Measurement Evaluation Module  TDC1000-C2000EVM  Evaluation board 

Software development (1)

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