Hi,
To be clear, I mentioned Bandgap reference circuits. In that circuit we employ both PTAT and CTAT voltages.
The temperature independence is obtained bycancelling the higher order terms which causes voltage drift with temperature. I understood this. But I want to be clear on what is exactly mentioned by zero, first or superior order curvature correction.?
Hope this explains my situation. I studied zero order curvature corrected voltage reference but i couldn't figure out the difference between zero and first order curvature correction techniques.
thanks