Voltage measurement only

Hi TosseK ,

Good day. The onboard ADC can be access through the I2C capability of this part. The ADC continuously monitors three voltages in sequence: the differential voltage between Sense+ and Sense-, the Vdd or V_sense+ and V_ADIN. The sense pins can be biased independently of the part's supply voltage. Hence, you can monitor it using the onboard ADC.  Here is a the general data transfer for this part:

To access the reading, you can set the CONTROL register's A5 and A6 to 10 respectively while enabling A2 pin for sense+ voltage monitoring. As shown in the table 3 of the datasheet:

You can use the default configurations for the remaining bits. Based on this you can directly input the voltage on the sense+ pin. However, there should be no violation of the absolute max rating to avoid damaging the part. With this, I want to know your application's input voltage and current. I hope this helps.

Regards,
Gilbeys

Hi Gilbeys,

Thanks for your answer. 

To make sure I understand correct. If I connect the Sense- to reference/GND and then read the differential voltage between Sense+ and Sense- I should get the value I need. The input voltage will be between 10 and 40V, so should be well within specification.

/Torbjörn

Hi TosseK ,

Good day. That should be the case. 

Regards,
Gilbeys