bandgap substrate noise simulation

[tdy]

what is substrate noise

will the bandgap substrate noise affects the reference voltage value due to the two bipolar branches small signal resistance difference? and how should I simulate it? can I just tie all sub-node to a noise source and run the simulation?

Thanks..

 

[yashiro]

bandgap substrate

I don't think the noise generated will affect the reference voltage value but it will affect the other blocks you will bias with this reference voltage. The noise you generate will add-up to the noise of the block, so if the noise level of the reference voltage is not big enough to disturb you have no problem.