How to measure a negative signal?

[pushekm_21]

 I have seen customers doing mistake when connecting a negative signal to PSoC. Since, PSoC works only on positive supply, so negative signal can not be connected directly to any of the digital or analog block.

       

There is a very nice blog written by Ganesh Raaja on how to measure Negative Voltage using PSoC1, it can be accessed using this link: http://www.cypress.com/?rID=50815&cache=0

       

Happy working with PSoC.

       

Best regards,

   

Pushek

[AuKa_264411]

I did a design idea on this in Electronic Design that will allow you to calculate the resistors needed to shift the voltage using Excel

   

see

   

      http://electronicdesign.com/article/analog-and-mixed-signal/use-excel-to-calculate-a-d-level-shifter...