ADS7830I

Hello,

Are you monitoring the data, in this case the voltage at the power supply being measured by the ADC, as well as the measured ADC output data?  Is it possible the input was at that voltage?

Regards

Cynthia

Cynthia said:

hi，

1、you see  the log ，70 messages  voletage is ok，just one message is abnormal；the system voletage is 4.2，After passing through the divider, then the voltage is fed to the ADC。

2、we measured the input voltage through Multimeter  and  oscilloscope  no abnormal findings；

2、how to measured ADC output data？

are you monitoring the data, in this case the voltage at the power supply being measured by the ADC, as well as the measured ADC output data?  Is it possible the input was at that voltage?

Regards

Have you been able to reproduce this, or has it only happened once through multiple testing? It is periodic?

Debugging a stand alone abnormality that cannot be reproduced is extremely difficult as it could be a magnitude of things.

While making readings, on the I2C communications, were the NACK and ACK being verified, to see if it was a possible digital read out error?

Regards

Cynthia

hi;

Have you been able to reproduce this, or has it only happened once through multiple testing? It is periodic?

--》》》It is difficult to reproduce this anomaly 。this issue  happened in mass producion . it is Randomly generated

Debugging a stand alone abnormality that cannot be reproduced is extremely difficult as it could be a magnitude of things.

While making readings, on the I2C communications, were the NACK and ACK being verified, to see if it was a possible digital read out error?

--》》》It is not that the voltage value has not been read, but that the voltage value has been shifted

Reading the NACK and ACK confirms that it was not a digital read out error, for example timing error causing the wrong measurement.

Has this only happened the one time? have you seen it happen again?

Regards

Cynthia