Automotive Ultrasonic Sensing Module Reference Design for Park Assist


Design files


This reference design provides hardware architecture for a Park Assist System (PAS) using three highly integrated, system-on-chip (SoC) ultrasonic transducer drivers. These ultrasonic transducer drivers have an integrated signal conditioner with an advanced digital signal processor (DSP) core. Using these integrated features, object detection from 25cm to 2.5m is achieved. The distance data is sent over a one-wire interface (OWI) to a local electronics control unit (ECU) where the data can be aggregated and processed. The sensor initialization, object detection algorithm, and software described in this design guide provide a basic framework to help engineers working on PAS for automotive or collision avoidance.

  • Combines three PGA460-Q1 devices to detect objects from 25cm to 2.5m
  • Provides system diagnostic information
  • Circuitry for level USART and TCI interface option included
  • 22mm diameter solution size
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUDO4.PDF (1909 K)

Reference design overview and verified performance test data

TIDRW76.PDF (165 K)

Detailed schematic diagram for design layout and components

TIDRW77.PDF (54 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRW78.PDF (56 K)

Detailed overview of design layout for component placement

TIDRW80.ZIP (373 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRW79.PDF (44 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Ultrasonic sensor AFEs

PGA460-Q1Automotive ultrasonic signal processor and transducer driver

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Automotive Ultrasonic Sensing Module Reference Design for Park Assist May 01, 2018
White paper Automated parking made possible with TI mmWave radar and ultrasonic sensors (Rev. B) Jun. 23, 2023

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