Ultrasonic Water Flow Measurement Reference Design


Design files


This Ultrasonic Water Flow Measurement system is ideal for providing highly accurate measurement across wide flow ranges as low as 1.4gpm. The design is based on a single MCU with discrete analog components. It uses a unique propriety algorithm that improves robustness and performance in flow measurement across wide range of operating conditions. This design is fully compatible with TI RF plug-in evaluation modules for wireless AMI networks.

  • Ultra low power ~ 20 years lifetime with battery
  • ADC based approach, meets ISO 4064-1 EEC applicable norms
  • Robust to signal amplitude variations – insensitive to received signal amplitude
  • Allows low power implementation with optimized signal processing
  • Supports Sub-1GHz and 2.4GHz RF wireless communication modules
  • Integrated low-power segment LCD controller
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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.

TIDUA10A.PDF (2151 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement


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


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


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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430FR697216 MHz MCU with 64KB FRAM, 2KB SRAM, LCD, AES, 12-bit ADC , comparator, DMA, UART/SPI/I2C, timer

Data sheet: PDF | HTML
Analog switches & muxes

TS5A631575-V, 2:1 (SPDT), 1-channel general-purpose analog switch with overshoot & undershood protection

Data sheet: PDF | HTML
Direction-controlled voltage translators

SN74LVC2T452-Bit Dual Supply Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs

Data sheet: PDF | HTML
Fully differential amplifiers

THS4521Very low power rail-to-rail output fully differential amplifier

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Ultrasonic Water Flow Measurement Design Guide (Rev. A) Jul. 06, 2015
Technical article Go differential to differentiate your precision design PDF | HTML Aug. 11, 2016

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