OPERATIONAL AMPLIFIERS...

What is an Amplifier…?

An Amplifier is a device which takes small voltage at the input, amplifies it and produce higher voltage at the output.

The gain of an amplifier can be referred as the amount by which the signal get amplified.

OPERATIONAL AMPLIFIERS

High gain DC amplifier.Gain being the order of 100,000 of more.Supplied as an integrated circuit on si chip.

TYPES OF INPUT

Negative inverting inputPositive non-inverting inputNegative voltage supplyPositive voltage supplyOffset null inputs

Symbolic Representation..

Op-Amps Perform As:

V-I & I-V ConverterThe Signal adderSignal magnifierFilter for noise reductionAnalogue-Digital & Digital-Analogue

ConvertorInterface between sensors & Microprocessor

TYPES

INVERTING AMPLIFIERNON-INVERTING AMPLIFIERSUMMING AMPLIFIERINTEGRATING AMPLIFIERDIFFRENTIAL AMPLIFIER

Non-Inverting Amplifier

Inverting Amplifier

Summing Amplifier

Integrating Amplifier

Differential Amplifier

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