Advanced
AdvancedCurrentMirrorsand
Opamps
Hossein Shamsi
WideSwingCurrentMirrors
It is proven that if both of the following conditions are satisfied, then all
transistors will be biased in the saturation region.
Vout (n + 1)Veff
Vtn nVeff
Typically n is c
Basic
BasicOpampDesignand
Compensation
Hossein Shamsi
TwoStageopamp
opampGain
A V1 = g m1 (rds2 rds4 )
A 0 = A V1 A V2 A V3
SlewRate
dVo
I D5
SR =
=
dt max C C
DescriptionoftheSystematicOffset
Assume that a designer has made a
mistake and has not chosen i
Basic
BasicCurrentMirrorsandSingle
StageAmplifiers
Hossein Shamsi
SimpleCurrentMirror
rout = rds 2
I out
W
L 2
=
I in
W
L 1
Vout Veff
CommonSourceAmplifier
SourceFollowerorCommonDrainAmplifier
gs1 denotes the body effect. (gs1 =gmb1)
denotes
body effe