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LTC2324-16 Maximum Conversion Time?

Question asked by DavidLee on Jul 3, 2018
Latest reply on Jul 10, 2018 by DavidLee

I've got a few questions about the LTC2324-16 ADC.


This device does not appear to have an output that indicates that the conversion is complete.
Therefore I am assuming that we start the conversion with a pulse on /CNV and just wait around for some time period and then hope that the ADC is finished and that the MSB is available on SDO.

 

In order for this to be reliable, one must know the MAXIMUM conversion time.


The table ADC TIMING CHARACTERISTICS on page 5 of the data sheet indicate that the MINIMUM conversion time (tCONV) is 220ns. However, there is no mention of the maximum conversion time.

 

Note that there is a reference to tCONV_MAX in the Notes for Table 2 on page 27 of the data sheet.
However, tCONV_MAX is not defined in the data sheet.

 

So my questions are:
1. Is my thinking correct? Do we just hang around for a delay time and then hope the ADC is done? How long?
2. What is value for the maximum conversion time (tCONV_MAX)?

 

Cheers,

David

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