Ultrasonic Water Flow Measurement Reference Design
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now

See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document


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

See the Important Notice and Disclaimer covering reference designs and other TI resources.


Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
MSP430FR6972  16 MHz MCU with 64KB FRAM, 2KB SRAM, LCD, AES, 12-bit ADC , comparator, DMA, UART/SPI/I2C, timer  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC2T45  2-Bit Dual Supply Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs  Voltage level translators  Sample & Buy View Design Kits & Evaluation Modules
THS4521  Very low power rail-to-rail output fully differential amplifier  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TS5A63157  5-V, 2:1 (SPDT), 1-channel general-purpose analog switch with overshoot & undershood protection  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
MSP430FR6972 Download Download
Download Download
SN74LVC2T45 Download Download
Download Download
Download -
THS4521 Download Download
Download Download
TS5A63157 Download Download
Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guide (1)
Title Type Size (KB) Date
PDF 2151 06 Jul 2015
Design files (7)
Title Type Size (KB) Date
ZIP 129 11 Sep 2015
ZIP 81 11 Sep 2015
ZIP 214 11 Sep 2015
ZIP 399 11 Sep 2015
PDF 91 11 Sep 2015
PDF 99 11 Sep 2015
PDF 57 11 Sep 2015

Support & training

TI E2E™ forums with technical support from TI engineers

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles