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AD7177-2, Missing conversions

ryerye129
on May 30, 2018

Hi,

I'm having a particularly weird issue where I'm not receiving half of the converted values. When streaming conversions, I will receive three (seemingly) consecutive conversions, and then three or four conversions disappear, and then I'll get another three seemingly consecutive conversions. 

I know I'm getting 3 and missing 3 (or 4) because I'm feeding a sine wave in the ADC ch0 input and plotting the converted values on my computer. Every 3 points, there's a jump. 

Does this seem like a familiar issue? Am I somehow not accounting for some cooldown period?

I'm currently operating the chip in:

Ch0 on (Ch1,2,3 are all off)

Continuous Conversion mode (Sync_en off, Err_en = 11)

10KSps

WL32

Default Setup0, Gain0, Offset0

Internal reference

IOCLK = 500Khz

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    •  Analog Employees 
    on Aug 24, 2018 12:51 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
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    •  Analog Employees 
    on Aug 24, 2018 12:51 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
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