analog_wiz wrote on Nov 30th, 2012, 7:37pm:To Optimize a BG for noise will include reducing both (thermal as well as flicker). You can use (on chip rc using special techniques) to get cutoffs as low as 500hz(3db).Loose electron, have you used any other techniques other than those discussed here.
After you got a BG adjusted where you wanted (curvature correction, offsets and all that)
To the best of my knowledge you got:
Bigger W & L for lower flicker
Lower impedance, higher currents for lower White-thermal-johnson noise.
Chopping to up-convert the near DC noise flicker noise
Bipolar design to get away from MOS flicker noise. (reminder - BJT
devices have flicker noise as well, just orders of magnitude
smaller than MOS devices)
Filtering output
Filtering select nodes in the BG
That's what I am aware of.