wturtle
Newbie level 4
![Newbie level 4](/styles/images/ranks/blevel1.gif)
Hey guys,
I need a few suggestions. I built a bandgap that has an output of around 600mV. But now I need to use this voltage and create a current reference that is also PVT independent, or at least, tracks the bandgap voltage good enough.
I've seen a few circuits in which we simply use a amplifier with negative feedback and force the bandgap voltage across a resistor. But the single resistor varies a lot with process corners and introduces a lot of error.
I need a few sugestions!
Can you provide a few articles or something?
Thanks,
I need a few suggestions. I built a bandgap that has an output of around 600mV. But now I need to use this voltage and create a current reference that is also PVT independent, or at least, tracks the bandgap voltage good enough.
I've seen a few circuits in which we simply use a amplifier with negative feedback and force the bandgap voltage across a resistor. But the single resistor varies a lot with process corners and introduces a lot of error.
I need a few sugestions!
Can you provide a few articles or something?
Thanks,