Timeline for ADC chip for multiple simultaneous conversions
Current License: CC BY-SA 4.0
4 events
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| Jul 13, 2022 at 12:29 | comment | added | TonyM | @ASG, it's OK :-) strain gauges (that) barely respond to anything beyond ~20Hz Then you can definitely use a cheap ADC with muxed inputs. There's no return on the expense of simultaneous ADC circuits. MHz level oversampling creates spurious digital artefacts It doesn't here, don't get that comment. Taking 15 samples at 1 Msps then pausing for 400 us won't cause digital artifacts. It also allows the far better solution of oversampling and averaging each input by an MCU, using a very fast and simple moving average filter, to greatly improve the input noise immunity for more reliable samples. | |
| Jul 13, 2022 at 3:13 | comment | added | ASG | The senors are strain gages. They barely respond to anything beyond ~20Hz. The forces to be measured are human scale - so cannot be more than ~10Hz. At such low frequencies drifts start becoming a problem. MHz level oversampling creates spurious digital artefacts. That said, as someone suggested - simultaneous sampling ADCs! The answer to my question were the keywords in my question. A real chump I feel like now! Oh! Well! Engineering certainly provide many opportunities for that. | |
| Jul 11, 2022 at 15:03 | history | edited | TonyM | CC BY-SA 4.0 |
Clarifications.
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| Jul 11, 2022 at 14:58 | history | answered | TonyM | CC BY-SA 4.0 |