Junction Noise

[Martin Czech]

MOS FET sounds reasonable. The main chagrin if you
have to do analog circuitry in CMOS (pure CMOS).
Bipolar transistors are so much quieter.

I think it has to to with the surface below the gate oxide
and gate oxide purity itself. Very high impedance, so
any dirt effect current will matter. Bipolars have conducting
junctions, so dirt currents don't really matter.
Same applies for JFETs.

Is pink noise really identical to 1/f noise?
I alsways thought pink noise was in the audio band or above
(by definition) and 1/f below -say- 10Hz.
One would be usefull for audio, the other  for DC offset
or error.

m.c.