Software
Firmware
TIDA-00765
1g Resolution over 15kg Range Sub-100nVpp Noise Front-End Reference Design
TIDA-00765
Overview
TIDA-00765 is a less than 100nVpp analog front end for resistive strain gauge bridge load cell-based weight and vibration measurement. It is ideally suited for appliances, which require high-resolution due to large dynamic range or have considerable weight offset. In the face of significant levels of switching supply noise and rapid temperature changes, drift and interference are common issues in harsh environments. The design’s high integration, AC excitation, and robust filtering suppress drift and interference to ensure consistent performance in tough environments.
Features
- Captures outputs of both multiple and single resistive strain gauge-based load cell bridges simultaneously
- Consistent <100nVpp low-noise performance
- <5-μV total error from 0ᵒC to 85ᵒC
- AC excitation robustly eliminates drift introduced by parasitic thermocouples and other causes
- Highly robust to >500mVpp 100-kHz switching-supply noise
- Captures vibrations up to 500 Hz with sample rate ≤2 kSps
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.
TIDUBL0A.PDF (2475 K)
Reference design overview and verified performance test data
TIDRL52.PDF (690 K)
Detailed schematic diagram for design layout and components
TIDRL53.PDF (63 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRL54.PDF (250 K)
Detailed overview of design layout for component placement
TIDRL56.ZIP (3319 K)
Files used for 3D models or 2D drawings of IC components
TIDCC12.ZIP (434 K)
Design file that contains information on physical board layer of design PCB
TIDRL55.PDF (1764 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | High-Resolution Low-Noise Front-End Weight Vibration Measurement Design Guide (Rev. A) | Jun. 14, 2016 | |
| Technical article | The real secret to become a better cook. Integrate smart scale technology in kitch | PDF | HTML | Oct. 25, 2016 |
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