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LTC2400 Intermittent SDO Output

I have a LTC2400 ADC and am attempting to connect it to a TI TM4C1294NCPDT micro-controller. I have configured the micro-controller to use external serial clock, single cycle operation. The ADC is isolated from the micro-controller through a digital isolator.

The SDO output on the ADC is not producing an output that looks correct. This signal is not consistent.


CH2 => CS


Any advice would be appreciated.

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  • Hi

        With F0 tied to GND, each conversion will take a minimum of 130ms. From the scope capture it appears that CSn is only high for about 200us - meaning the conversion hasn't finished…