Figure 6.4 Circuit for a basic MOSFET constant-current source.

1
Single-Stage Integrated-Circuit Amplifiers
The Basic MOSFET Current Source
Figure 6.4 Circuit for a basic MOSFET
constant-current source.
2
MOS Current-Steering Circuits
Figure 6.7 A current-steering circuit.
3
The Common-Source Amplifier
Figure 6.17 (a) Active-loaded common-source
amplifier. (b) Small-signal analysis of the
amplifier in (a), performed both directly on the
circuit diagram and using the small-signal model
explicitly.
4
Figure 6.18 The CMOS common-source amplifier
(a) circuit (b) iv characteristic of the
active-load Q2 (c) graphical construction to
determine the transfer characteristic and (d)
transfer characteristic.
5
The Common-Gate Amplifier
Figure 6.27 (a) Active-loaded common-gate
amplifier. (b) MOSFET equivalent circuit for the
CG case in which the body and gate terminals are
connected to ground. (c) Small-signal analysis
performed directly on the circuit diagram with
the T model of (b) used implicitly. (d) Operation
with the output open-circuited.
6
Figure 6.28 (a) The output resistance Ro is
found by setting vi 5 0. (b) The output
resistance Rout is obtained by setting vsig 5 0.
7
Figure 6.29 The impedance transformation
property of the CG configuration.