Switching Transient Artifacts of Current Measurement Circuit

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Peter Luo
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Switching Transient Artifacts of Current Measurement Circuit

Hi Dialog,

The document: https://www.dialog-semiconductor.com/sites/default/files/um-b-114_da1453... says: 

9.1 Switching Transient Artifacts of Current Measurement Circuit
When the current measurement circuit changes scale, it presents some small or large voltage step
on the A/D converter inputs. An ideal converter (infinite bandwidth) would produce a single spike at
the point of switching. But since the converter is not ideal, it produces a ringing like waveform (Figure
52).

How about DA1469X Development Kit – Pro? It adopts simliar current measurement circuit, has same issue? 

Thanks, Peter

Device: 
PM_Dialog
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Joined: 2018-02-08 11:03
Hi Peter Luo,

Hi Peter Luo,

Please check out the UM-B-093 User Manual: DA14695 Pro Kit.  In section 3.7 Current Measurement Section in DA1469x DK PRO, you will find that the only known limitation is that the measurement accuracy between 500 µA and 1 mA is worse than the typical 1% we have in all other cases (from 1 µA to 250 mA).

Thanks, PM_Dialog

Peter Luo
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Last seen: 1 month 3 weeks ago
Joined: 2016-01-17 13:37
Hi Dialog,

Hi Dialog,

Very happy to hear DA1469X Development Kit Pro has no switching transient artifacts issue.

Thank you so much!

 Peter