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AD7190 looses clock

Question asked by Thomas123456 on May 27, 2016
Latest reply on May 29, 2016 by JellenieR

Hello,

 

we are running 4 AD7190 under the contitions belpow.

 

after two or trhee days one of the AD convertes semms to losse clock or something.

he just returns 0xFFFFFF and has to be resettet

after the reset he runs normal for another two or three days

 

conditions

Configuratioin register value: 0x100118 (Ext. reference, CH0, unipolar, Gain=1)

mode register value:  0x180C01(Send Status Register with Data, Internal clock-pin tristated, SINC 4 filter, single cycle conversion 4800Hz

SPI clock=32MHz

 

any idea why we get this issue? and how to solve ist (insted of resetting the ADC)?

 

i even tried it with a lower SPI speed(8MHZ but still got this issue)

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