https://community.nxp.com/t5/Processor-Expert-Software/S12ZVC-ADC-Problem/m-p/1326661#M4804 <P>Hi,</P><P>I am using S12ZVC for my project. I use one ADC component and 5 channel.</P><P>I have a current sensor which give output between 2.5-5 Volt. When current sensor output is 2.5 V ADC value is 139. Thats mean current is equal to zero. I am mapping according to this value.<BR />When current sensor output increased ADC value increased. But ADC is very slowly. For example 2.5V is equal to 139(bit value), current sensor output is increasing ADC value increasing but very very slowly and current sensor output is decreasing ADC value very very slowy decreasing. I dont understand why.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot_1.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/153528i8925BF2F1DB7119B/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot_1.png" alt="Screenshot_1.png" /></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot_2.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/153529i6041F42212EDF5FE/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot_2.png" alt="Screenshot_2.png" /></span></P><P>  </P> Fri, 20 Aug 2021 06:13:43 GMT maximillion 2021-08-20T06:13:43Z https://community.nxp.com/t5/Processor-Expert-Software/S12ZVC-ADC-Problem/m-p/1326661#M4804 <P>Hi,</P><P>I am using S12ZVC for my project. I use one ADC component and 5 channel.</P><P>I have a current sensor which give output between 2.5-5 Volt. When current sensor output is 2.5 V ADC value is 139. Thats mean current is equal to zero. I am mapping according to this value.<BR />When current sensor output increased ADC value increased. But ADC is very slowly. For example 2.5V is equal to 139(bit value), current sensor output is increasing ADC value increasing but very very slowly and current sensor output is decreasing ADC value very very slowy decreasing. I dont understand why.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot_1.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/153528i8925BF2F1DB7119B/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot_1.png" alt="Screenshot_1.png" /></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot_2.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/153529i6041F42212EDF5FE/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot_2.png" alt="Screenshot_2.png" /></span></P><P>  </P> Fri, 20 Aug 2021 06:13:43 GMT https://community.nxp.com/t5/Processor-Expert-Software/S12ZVC-ADC-Problem/m-p/1326661#M4804 maximillion 2021-08-20T06:13:43Z https://community.nxp.com/t5/Processor-Expert-Software/S12ZVC-ADC-Problem/m-p/1327774#M4806 <P>Hi <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/188570">@maximillion</a>,</P> <P>I understand you use the 8bit mode.</P> <P>Can you post other results at different input voltages?</P> <P>Can you please use a longer sample time and compare/post the results?</P> <P>What sensor do you use? Can you share the schematic?</P> <P>&nbsp;</P> <P>Thank you,</P> <P>BR, Daniel</P> <P>&nbsp;</P> Mon, 23 Aug 2021 12:04:49 GMT https://community.nxp.com/t5/Processor-Expert-Software/S12ZVC-ADC-Problem/m-p/1327774#M4806 danielmartynek 2021-08-23T12:04:49Z