flushrat
Full Member level 3
For a conventional bandgap, if sweep temperature from -40 to 120, the bandgap output voltage is like this. In the figure, the max V is 1.206V at 35℃, the min V is 1.199V at 120℃. My question is how to decrease this variation?
Vout=Vbe+△Vbe*R2/R1=Vbe+kT/q*ln*R2/R1
Which factor will affect the variation? n or the value of R1 or others?
Vout=Vbe+△Vbe*R2/R1=Vbe+kT/q*ln*R2/R1
Which factor will affect the variation? n or the value of R1 or others?