chungming
Full Member level 1
![Full Member level 1](/styles/images/ranks/elevel1.gif)
Hi ~~
I have a question about bandgap reference
Like attached picture
This is my transient analysis result (simulate vdd off and on conditions)
Why the bandgap voltage overshoot is so large?
(regardless there has start up circuit or not……)
My opamp is well designed.
(gain 80dB, phaseMargin 70, UGF 700kHz ,slew rate 0.8M V/s
and bandgap loop gain 80dB, loop phaseMargin 65, loop UGF 350KHz)
Thanks ~!!!!!
I have a question about bandgap reference
Like attached picture
This is my transient analysis result (simulate vdd off and on conditions)
Why the bandgap voltage overshoot is so large?
(regardless there has start up circuit or not……)
My opamp is well designed.
(gain 80dB, phaseMargin 70, UGF 700kHz ,slew rate 0.8M V/s
and bandgap loop gain 80dB, loop phaseMargin 65, loop UGF 350KHz)
Thanks ~!!!!!