Department: EEE

Submitted to:Nusrat Alim Lecturer, GUB Submitted by:

Mehedi KahharID # 143010001

Course Title: Electronics II

Basic of an OP-AMP

IntroductionWhat is OP-AMP?History of OP-AMPCharacteristics of OP-AMPTypes of OP-AMPApplications of OP-AMP

What is an Op-Amp? (The Surface)

An Operational Amplifier (Op-Amp) is an integrated circuit that uses external voltage to amplify the input through a very high gain.

FIG-1: What an Op-Amp looks like to a lay-person

What is an Op-Amp? (Pin Diagram)

There are 8 pins in a common Op-Amp IC, like the IC741 which is used in many instructional courses.

FIG-2: What an Op-Amp looks like to an engineer

Op-Amp Characteristics Infinite open-loop gain G = vout / vin

Infinite input impedance

Infinite output voltage range

Zero output impedance 

Zero noise

Infinite power supply rejection ratio.

Types of Op-Amps  Inverting

Non-inverting

Summing amplifier

The voltage follower

 Integrator

Differentiator

Applications of Op-Amps Comparator Integration and differentiation Charge amplifier Capacitance multiplier Oscillators Filters Audio and video preamplifiers and buffers Voltage regulator and current regulator Digital-to-analog converter

THANKS TO ALL