jaydnul
Newbie level 6
Hello there,
I'm curious why the PN junction of a BJT transistor is still used as the CTAT voltage in a reference circuit (bandgap), while a MOSFET threshold voltage also has CTAT behavior? Is it because the BJT has exponential behavior while the MOSFET is just the square of the voltage? Why is the BJT better?
Thanks
I'm curious why the PN junction of a BJT transistor is still used as the CTAT voltage in a reference circuit (bandgap), while a MOSFET threshold voltage also has CTAT behavior? Is it because the BJT has exponential behavior while the MOSFET is just the square of the voltage? Why is the BJT better?
Thanks