Ultrasonic sensing subsystem reference design for gas flow measurement
TIDM-02003
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Key Document
Description
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.
Features
- 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
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Schematic/Block Diagram
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Design Guide
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TI Devices (10)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| MSP430FR5041 |
Ultrasonic Sensing MCU with 32KB FRAM, 12KB RAM for gas and water metering applications |
Microcontrollers (MCU) |
Not Available |
View Design Kits & Evaluation Modules |
| MSP430FR5043 |
Ultrasonic Sensing MCU with 64KB FRAM, 12KB RAM for gas and water metering applications |
Microcontrollers (MCU) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| MSP430FR50431 |
Ultrasonic Sensing MCU with 64KB FRAM, 12KB RAM, I2C Boot Loader for flow meters |
Microcontrollers (MCU) |
Not Available |
View Design Kits & Evaluation Modules |
| MSP430FR6041 |
Ultrasonic Sensing MCU with 32KB FRAM, 12KB RAM, LCD for gas and water metering applications |
Microcontrollers (MCU) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| MSP430FR6043 |
Ultrasonic Sensing MCU with 64KB FRAM, 12KB RAM, LCD for gas and water metering applications |
Microcontrollers (MCU) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| MSP430FR60431 |
Ultrasonic Sensing MCU with 64KB FRAM, 12KB RAM, LCD, I2C Bootloader for flow meters |
Microcontrollers (MCU) |
Not Available |
View Design Kits & Evaluation Modules |
| OPA836 |
Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp |
Operational amplifiers (op amps) |
Sample & Buy |
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| OPA838 |
1-mA, 300-MHz Gain Bandwidth, Voltage-Feedback Op Amp |
Operational amplifiers (op amps) |
Sample & Buy |
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| TPS22860 |
Ultra-low leakage load switch |
Power switches |
Sample & Buy |
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| TPS61240 |
5V, 400mA, 4MHz Step-Up DC/DC Converter |
Step-up (boost) |
Sample & Buy |
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CAD/CAE symbols
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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
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.
Step 3: Open the .bxl file with the Ultra Librarian software.
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Technical Documents
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User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 4404 |
10 Jan 2019
|
Design files (6)
| | ZIP | 3555 |
24 Jan 2019
|
| | ZIP | 2694 |
24 Jan 2019
|
| | PDF | 3249 |
24 Jan 2019
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| | PDF | 531 |
24 Jan 2019
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| | PDF | 80 |
24 Jan 2019
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| | PDF | 670 |
24 Jan 2019
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