|Noise spectral power plots of 10 devices taken from|
10 different locations across the wafer (see inset).
Any channel doping, such as Vth adjust, significantly increases 1/f and RTS noise:
|Box plots of source follower noise power spectrum plots.|
Red (Dark) boxes are doped devices.
Green (Light) boxes are undoped “native” transistors.
Few Vth adjust splits were measured:
It's not clear why S4 and S7 are not shown, but S1-S3 clearly show noise improvement:
The total read noise histogram clearly demonstrates the advantage of lightly doped source follower:
RTS Statistics shows the same: