Analog Diablog is the place to comment on the articles found in Analog Dialogue (or those that you'd like to see). It can also be used as a discussion forum on products, applications, technology, and techniques for analog, digital, and mixed-signal processing using Analog Devices components.
The accuracy required by weigh scales is not initially obvious. Their typical resolution is only 1:3,000 to 1:10,000, so a 12- to 14-bit ADC would seemingly be adequate. A closer examination shows that this is not case, however, and that a 20-bit ADC is really required. This article introduces weigh scale system specifications and design considerations, including noise, dynamic range, offset drift, gain drift, and filtering.
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