J. Mulder et al., APPLICATION OF THE BACK GATE IN MOS WEAK INVERSION TRANSLINEAR CIRCUITS, IEEE transactions on circuits and systems. 1, Fundamental theory andapplications, 42(11), 1995, pp. 958-962
Though the MOS transistor is a four-terminal device, it is most often
used as a three-terminal device. Therefore, a large number of possible
MOS circuits are overlooked. In this brief, the four-terminal point o
f view is elaborated with respect to MOS weak inversion translinear ci
rcuits, a class of circuits naturally very suitable for low-voltage an
d low-power applications. Some new circuits are described which someti
mes are more suitable for low-voltage applications than bipolar transl
inear networks performing the same function. It is also shown that, us
ing the back gate, translinear networks can be derived which cannot be
realized with bipolar transistors. These network topologies increase
the possibilities offered bg translinear technology. As an example, me
asurement results of a low input-voltage current mirror and a sin(x)ci
rcuit are shown.