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TIDA-00403

Ultrasonic Distance Measurement using the TLV320AIC3268 miniDSP CODEC Reference Design

Design files

TIDA-00403

Design files

Overview

The TIDA-00403 reference design uses off-the-shelf EVMs for ultrasonic distance measurement solutions using algorithms within the TLV320AIC3268 miniDSP. In conjunction with TI’s PurePath Studio design suite, a robust and user configurable ultrasonic distance measurement system can be designed with the click of a mouse. The ultrasonic burst generation characteristics as well as detection algorithms can be user modified to fit specific use cases in industrial and measurement applications allowing users to overcome the limitations of other fixed function sensors while simultaneously increasing reliability of the measurements. Two GPIOs on the TLV320AIC3268 are automatically triggered indicating a transmitted and received ultrasonic burst. With a host MCU monitoring these GPIOs, the time of flight can be extracted.

Features
  • Prototyping using off-the-shelf EVMs with host computer for low cost evaluation and design
  • miniDSP with Pure Path Studio for high level of flexibility and fast time to market
  • 40KHz ultrasonic generation at 96KHz Fs Sample Rate; 192KHz Fs available for higher ultrasonic frequencies
  • Detection path inducing Chebychev filter and peak detector eliminates false triggering due to background noise
  • Automatic GPIO triggering for Time of Flight (TOF) calculation with host MCU
  • Includes a getting started/design guide and tested Pure Path Studio Process flow example for getting started
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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.

download Design guide — TIDA-00403
TIDUAN9.PDF (1595 K)

Reference design overview and verified performance test data

download Design guide — TIDA-00403
TIDUAO0.PDF (1277 K)

Reference design overview and verified performance test data

download Schematic — TIDA-00403
TIDRH34.PDF (544 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-00403
TIDRH35.PDF (282 K)

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

download Assembly drawing — TIDA-00403
TIDRH36.PDF (1710 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-00403
TIDRH38.ZIP (11 K)

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

download Gerber file — TIDA-00403
TIDCAY3.ZIP (3899 K)

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

download PCB layout — TIDA-00403
TIDRH37.PDF (1839 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Audio CODECs

TLV320AIC3268 — TLV320AIC3268 Ultra Low Power Stereo Audio Codec

Data sheet: PDF
Analog switches & muxes

SN74CBT3253 — 5-V, 4:1, 2-channel analog multiplexer with TTL inputs

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Audio DACs

PCM5242 — 4.2-VRMS DirectPath™, 32-bit, 384-kHz, 114-dB Audio Stereo DAC

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Auto-direction voltage translators

TXB0101 — 1-Bit Bidirectional Voltage-Level Shifter With Auto Direction Sensing and +/-15-kV ESD Protect

Data sheet: PDF | HTML
Auto-direction voltage translators

TXB0102 — 2-Bit Bidirectional Voltage-Level Shifter with Auto Direction Sensing and +/-15-kV ESD Protect

Data sheet: PDF | HTML
Auto-direction voltage translators

TXS0104E — Four-bit bidirectional voltage-level shifter for open-drain and push-pull applications

Data sheet: PDF | HTML
Digital multiplexers & encoders

SN74LVC2G157 — Single 2-Line to 1-Line Data Selector/Multiplexer

Data sheet: PDF | HTML
Direction-controlled voltage translators

SN74AVC2T245 — Dual-Bit, 2-DIR pin Dual-Supply Bus Transceiver w/ Configurable Voltage Translation, 3-State Output

Data sheet: PDF | HTML
I2C & I3C level shifters, buffers & hubs

PCA9306 — 2-bit bidirectional 400-kHz I2C/SMBus voltage level translator

Data sheet: PDF | HTML
I2C & I3C level shifters, buffers & hubs

TCA9517 — 2-bit level-translating 400-kHz I2C/SMBus buffer/repeater with powered-off high-impedance

Data sheet: PDF | HTML
I2C general-purpose I/Os (GPIOs)

TCA9539 — 16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, reset & config registers

Data sheet: PDF | HTML
Inverting buffers & drivers

SN74LVC2G04 — 2-ch, 1.65-V to 5.5-V inverters

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS735 — 500-mA, low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS736 — 400-mA, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable

Data sheet: PDF | HTML
Noninverting buffers & drivers

SN74AUP1G125 — Single 0.8-V to 3.6-V low power buffer with 3-state outputs

Data sheet: PDF | HTML
Noninverting buffers & drivers

SN74LVC1G126 — Single 1.65-V to 5.5-V buffer with 3-state outputs

Data sheet: PDF | HTML
Noninverting buffers & drivers

SN74LVC2G17 — 2-ch, 1.65-V to 5.5-V buffers with Schmitt-Trigger inputs

Data sheet: PDF | HTML
Sample rate converters

SRC4392 — High-end Combo Sample Rate Converter

Data sheet: PDF

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Software

Technical documentation

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Type Title Date
* Design guide TIDA-00403 Test Results Sep. 21, 2015
Design guide Ultrasonic Distance Measurement Using TLV320AIC3268 miniDSP CODEC Design Guide Sep. 21, 2015

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