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TIDA-00403
Ultrasonic Distance Measurement using the TLV320AIC3268 miniDSP CODEC Reference Design
TIDA-00403
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
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.
TIDUAN9.PDF (1595 K)
Reference design overview and verified performance test data
TIDUAO0.PDF (1277 K)
Reference design overview and verified performance test data
TIDRH34.PDF (544 K)
Detailed schematic diagram for design layout and components
TIDRH35.PDF (282 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRH36.PDF (1710 K)
Detailed overview of design layout for component placement
TIDRH38.ZIP (11 K)
Files used for 3D models or 2D drawings of IC components
TIDCAY3.ZIP (3899 K)
Design file that contains information on physical board layer of design PCB
TIDRH37.PDF (1839 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
Analog switches & muxes
SN74CBT3253 — 5-V, 4:1, 2-channel analog multiplexer with TTL inputs
Data sheet: PDFDigital multiplexers & encoders
SN74LVC2G157 — Single 2-Line to 1-Line Data Selector/Multiplexer
Data sheet: PDF | HTMLDirection-controlled voltage translators
SN74AVC2T245 — Dual-Bit, 2-DIR pin Dual-Supply Bus Transceiver w/ Configurable Voltage Translation, 3-State Output
Data sheet: PDF | HTMLNoninverting buffers & drivers
SN74AUP1G125 — Single 0.8-V to 3.6-V low power buffer with 3-state outputs
Data sheet: PDF | HTMLNoninverting buffers & drivers
SN74LVC1G126 — Single 1.65-V to 5.5-V buffer with 3-state outputs
Data sheet: PDF | HTMLNoninverting buffers & drivers
SN74LVC2G17 — 2-ch, 1.65-V to 5.5-V buffers with Schmitt-Trigger inputs
Data sheet: PDF | HTMLStart development
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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