High-Resolution, Low-Drift, Precision Weigh-Scale Reference Design with AC Bridge Excitation
TIPD188
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
-
TIPD188 Design File
(ZIP 2373 KB)
15 Jul 2015
- High-Resolution, Low-Drift, Precision Weigh-Scale Reference Design (Rev. A)
(PDF 1692 KB)
15 Feb 2019
Description
This precision weigh-scale reference design achieves greater than 50,000 noise-free counts of resolution. Offset and offset drift errors are nearly eliminated by ac bridge excitation. This design takes advantage of the high-resolution ADS1262 delta-sigma ADC.
Features
- >50,000 noise-free count weigh-scale solution
- Operating temperature range: -40 ᵒC to +125 ᵒC
- Less than 1 μV total error across temperature range
- ADC Supply and Bridge Excitation Voltage: 5V
- Bridge Output: 0 V to 10 mV
- Firmware provides ADS1262 example code
- This robust circuit reference design includes theory, complete error analysis, component selection, simulation, PCB design, example code, and measured data that correlates with the theory and simulation.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
