Op-Amp and Voltage Reference Circuits

By : Vandana Tanwar

Updated : Feb 12, 2021, 9:11

For students looking for Op-Amp and Voltage Reference Circuits study material for GATE ECE, you are on the right page. Operational Amplifiers shortened as "Op-Amp" are a significant building block of the analogue electronic system. In contrast, Voltage Reference Circuit is defined as an electronic device that produces a constant voltage irrespective of the loading, power supply variations, passage of duration and temperature changes. Op-Amp and Voltage Reference Circuit is an important topic of Analogue Circuit. Analogue Circuit covers crucial sections in the given competitive examinations including GATE (Graduate Aptitude Test in Engineering), JEE (Joint Entrance Examination), SRMJEE (SRM Joint Engineering Entrance Exam), and VITEEE (VIT Engineering Entrance Exam)

Important Op-Amp and Voltage Reference Circuit Topics for GATE ECE

Some of the important topics are Amplifiers, Circuit Analysis & its applications, Op-Amp & Voltage reference Circuits, Simple Diode, Oscillators, wave shaping circuits, BJT and MOSFET Amplifiers, Operational Amplifiers, Filters & Timers

Topic	Explanation
Definition	An Operational Amplifier is defined as an integrated circuit that uses varied voltage input and produces a single-ended voltage output. A Voltage Reference Circuit is defined as an electronic circuit that produces stable voltage irrespective of temperature changes, the passage of period, power supply variations or loading on the device.
Types	Op-Amp Op-Amp is classified into four different types given below: Voltage Amplifiers: It takes voltage in and produces a voltage at the output. Transconductance Amplifiers: It converts voltage inputs to current output. Current Amplifiers: It receives current input and produces current output Transresistance Amplifiers: It converts current input and produces voltage output. Voltage Reference Circuit Generally, Voltage Reference is classified into various types in the present-day market, but the most common types are given below i.e. Shunt Voltage Reference: Shunt Voltage Reference is a 2 terminal model designed for operations within a specific range of current, where reference operates in parallel with its load. Series Voltage Reference: Series Voltage References has three or more than three terminals. Besides, it consumes a constant current supply over a broad range of voltage supply.
Function Generators and Wave Shaping Circuits	Function Generators A Function Generator can be used to generate various voltage signals, i.e. Pulse, Triangle and Sine. Sine and Pulse are those signals which are highly required and common signals in electronic circuits. Pulse Signals can be used in examining the response Wave Shaping Circuits. A wave Shaping Circuit is that circuit that can be used to alter the shape of the waveform from changing current or direct current. Most of the wave shape circuits are used to generate periodic waveforms.

Tips to Prepare Op-Amp and Voltage Reference Circuits Questions for GATE

Op-Amp and Voltage Reference Circuit is an important topic for GATE 2021. Therefore, aspirants should cover important topics based on the analysis of the previous year's exam patterns. Apart from that -

Make a proper study plan to cover Op-Amp and Voltage Reference circuits GATE syllabus.
Revise the formulas and prepare Op-Amp and Voltage Reference Circuits GATEgate notes.
Opt for Op-Amp and Voltage Reference Circuits book that helps in easy understanding of topics.
Check-out the weightage analysis of Op-Amp and Voltage Reference Circuits GATEate questions.
Practice Op-Amp and Voltage Reference Circuits online quiz, solve Op-Amp and Voltage Reference Circuits MCQ questions.

Importance of Op-Amp and Voltage Reference Circuits in GATE

Based on the analysis of the previous year's exam patterns, Op-Amp in the quantitative section has considerable relevance.

As per the previous year's GATE examination, a total of 32 questions have been asked from the Op-Amp section.
The total weightage of Op-Amp and Voltage Reference Circuit from the subject of Analogue Circuit is 11 marks.
It is a core topic therefore, it needs to be covered fundamentally.
To score good marks in this topic, focus on focusing on important topics such as like - It also tests your knowledge of important topics such as:

Circuit Analysis & its applications
Op-Amp & Voltage reference Circuits
BJT and MOSFET Amplifiers
Operational Amplifiers
Filters & Timers

Most Recommended Books for Op-Amp and Voltage Reference Circuit for GATE ECE

Some of the recommended Op-Amp and Voltage Reference Circuits books for easy understanding of topics are -

Topic	GATE Book Name	Author
Analog Circuits	Microelectronic Circuits: Theory and Applications (Edition 6)	Adel S. Sedra, Kenneth C, Smith
Digital Circuits	Digital Logic and Computer Design (Edition 1)	M. Morris Mano

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Offering complete Op-Amp and Voltage Reference Circuits study material for GATE ECE, BYJU'S Exam Prep is India’s largest and highly preferred application for Op-Amp and Voltage Reference Circuits for computer science preparation. It provides live interaction classes, mock tests, practicse sheets, Op-Amp and Voltage Reference Circuits notes for GATE PDF along with the recommended best books for preparation of Op-Amp and Voltage Reference Circuits topics for GATE ECE. Apart from that, BYJU'S Exam Prep provides Op-Amp and Voltage Reference Circuits GATE notes, previous year exams, exam patterns, and syllabus to better prepare candidates.

Frequently Asked Questions

Q. What is Op-Amp stands for?

The Op-Amp stands for Operational Amplifier.

Q. What are the top 3 characteristics of Op-Amp?

The top 3 characteristics of ideal Op-Amp are:

Zero output impedance
Infinite slew rate
Infinite voltage gain etc.

Q. Why is the Voltage Reference Circuit needed?

A Voltage Reference Circuit is a precision device that is designed to balance constant output voltage.

Q. How many types of Voltage Reference Circuit?

Voltage Reference Circuit is of two types, i.e. shunt and series.

Q. What is the weightage of Op-Amp and Voltage Reference Circuit in GATE Examination 2018?

The Op-Amp and Voltage Reference Circuit contained a total of 9 marks in GATE Examination 2018.