Carbon Nanotubes-Based Digitally Programmable Current Follower

Table 1

Comparison of various digital control techniques for a 3-bit digital control word.

Reference	Device	Model		Transistors	Aspect ratio
[18]	CCCII	0.25 μm CMOS	5.0 V	44	Different
[13]	CCII	0.25 μm CMOS	0.75 V	32	Different
[19]	FDCC	0.5 μm CMOS	1.5 V	44	Different
[20]	DVCC	0.5 μm CMOS	1.25 V	32	Different
This work	DVCC	32 nm CNFET	0.9 V	22	Constant