# Design and Analysis of Digitally Tunable Transconductance Amplifier (DTTA) Using CNTFETs

## TL;DR

This paper presents a digitally tunable amplifier design using carbon nanotube transistors, enabling flexible performance adjustments without hardware changes.

## Contribution

The novelty lies in using CNTFETs to create a digitally tunable transconductance amplifier with no hardware modifications.

## Key findings

- CNTFET-based DTTA design allows transconductance tuning without hardware changes.
- The design was verified using a 32 nm CNTFET model and HSPICE simulations.
- CNTFET modeling techniques were detailed for realistic circuit simulations.

## Abstract

Carbon nanotube-FETs (CNTFETs) have become a potential challenger because of their exceptional electrical properties and compatibility with conventional CMOS technology. The design and study of digitally tunable transconductance amplifiers (DTTAs) using CNTFETs are the main topics of this work. By utilizing the special characteristics of CNTFETs, the suggested DTTA design makes transconductance tunable, providing a versatile method of adjusting amplifier settings without requiring modifications to the hardware architecture. This study provides a complete description of the CNTFET modeling techniques utilized for realistic circuit simulations, along with a detailed analysis of the DTTA based on CNTFETs. The circuit is implemented using a 32 nm CNTFET model and verified results with HSPICE.