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How to design an Operational Transconductance Amplifier (OTA)?

This article explains how to design an Operational Transconductance Amplifier (OTA) in Cadence, focusing on optimizing transistor dimensions. It covers hand calculations and the gm/ID...

Prerequisits

To make it easier, I assume you have a basic knowledge of the following:

Basic circuitry knowledge; such as resistors, transistors, diodes, relays.
Basic programming knowledge in C; understand what are functions, operators, data types, and more.
Digital electronics, such as logic gates.

On some occasions I will explain it from scratch, but to understand everything, it is best to brush up on the basics so that you can follow the tutorials.

Required Software

For these tutorials we use Microchip’s own software package that includes:

MPLAB X IDE
XC8 Compiler
PICKIT3 programmer/debugger

All the tools can be downloaded at the official website of Microchip Technology

Required Hardware

The full tutorial consists of many different types of electrical components, sensors and actuators. It depends completely on your own project what you need. However, in all cases you will need a Pickit3 tool to install the software and you need at least 1 PIC16F877A microcontroller to install it on.