This reference design helps designers develop an ultrasonic gas-metering subsystem using an integrated, ultrasonic sensing solution (USS) module, which provides superior metrology performance with low-power consumption and maximum integration. The design is based on the 64KB MSP430FR6043 microcontroller (MCU) with integrated high-speed, ADC-based signal acquisition and an integrated low-energy accelerator (LEA) to optimize digital signal processing.
- Best-in-class metrology performance: +/-250ps zero flow drift (ZFD) and 500ps single-shot standard deviation (STD)
- Low power consumption: <20 uA across 200-kHz to 500-kHz transducers with one set of comprehensive results per second
- ±1% flow accuracy up to 12,000 lph with dynamic range of 200:1
- Three lph minimum detectable flow rate
- Robust performance against variation of transducer characteristics over temperature
Design files & products
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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
PCB layer plot file used for generating PCB design layout
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MSP430FR5041 — 16-MHz MCU with 32 KB FRAM, 12-bit high speed 8 MSPS sigma-delta ADC and integrated sensor AFEData sheet: PDF | HTML
MSP430FR5043 — 16-MHz MCU with 64 KB FRAM, 12-bit high speed 8-MSPS sigma-delta ADC and integrated sensor AFEData sheet: PDF | HTML
MSP430FR50431 — Ultrasonic Sensing MCU with 64KB FRAM, 12KB RAM, I2C Boot Loader for flow metersData sheet: PDF | HTML
MSP430FR6041 — 16-MHz MCU with 32-KB FRAM, LCD, 12-bit high speed 8-MSPS sigma-delta ADC and integrated sensor AFEData sheet: PDF | HTML
MSP430FR6043 — Ultrasonic Sensing MCU with 64KB FRAM, 12KB RAM, LCD for gas and water metering applicationsData sheet: PDF | HTML
MSP430FR60431 — 16-MHz MCU with 64-KB FRAM, LCD, 12-bit high speed 8-MSPS sigma-delta ADC and integrated sensor AFEData sheet: PDF | HTML
|*||Design guide||Ultrasonic Sensing Subsystem Reference Design for Gas Flow (TIDM-02003) (Rev. A)||PDF | HTML||Jul. 13, 2022|
|Application note||Gas Meter Design Guide||Oct. 28, 2020|
|Application note||Oxygen Concentration Sensing||PDF | HTML||Oct. 14, 2020|
|Application note||High-Resolution Anemometers||Oct. 02, 2020|
|Application note||Ultrasonic Surface Sensing||Sep. 25, 2020|
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