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How repeatable is sample-to-sample Delta Sigma ADC timing?
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Topic: How repeatable is sample-to-sample Delta Sigma ADC timing? (Read 894 times)
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741
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How repeatable is sample-to-sample Delta Sigma ADC timing?
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on:
March 02, 2018, 05:45:36 pm »
I get the impression that there seems to be uncertainly over 'when' a sample is taken with delta sigma.
Basically I need precise sample-to-sample timing, 240 SPS or better. How can I work this out from a typical DS?
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MasterT
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Re: How repeatable is sample-to-sample Delta Sigma ADC timing?
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Reply #1 on:
March 02, 2018, 07:24:37 pm »
Depends on a part number. Microchip says for MCP3422 & MCP3550 there is no timing to settle Sinc filter, so basically its easy to use. Sample is timestamped at the request. But TI and almost anyone else specify in DS 5-6 samples to settle Sinc. TI has app. note on this matter.
http://www.ti.com/lit/an/slyt264/slyt264.pdf
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danadak
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Re: How repeatable is sample-to-sample Delta Sigma ADC timing?
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Reply #2 on:
March 03, 2018, 08:49:52 pm »
Do you need resultant to be in synch or the time the S/H in A/D takes its sample ?
Regards, Dana.
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How repeatable is sample-to-sample Delta Sigma ADC timing?
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