ARUN MUCHHALA ENGINEERING COLLEGE- DHARI ANALOG ELECTRONICS Vaghamshi Jayshri 130960109036 ELECTRICAL DEPARTMENT.

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Presentation transcript:

ARUN MUCHHALA ENGINEERING COLLEGE- DHARI ANALOG ELECTRONICS Vaghamshi Jayshri ELECTRICAL DEPARTMENT

Topics Non-Inverting Amplifier Inverting Amplifier Integrator Differentiator 2ANALOG ELECTRONICS

Non-Inverting Amplifier (Ideal) (Assumption: A o is infinite) 3ANALOG ELECTRONICS

Non-Inverting Amplifier (Practical) 4ANALOG ELECTRONICS

Approximation (Taylor series approximation) (Large, since Ao is large) 5ANALOG ELECTRONICS

6

Application of Inverting Amplifier Analog Filters Control Systems 7ANALOG ELECTRONICS

Inverting Amplifier Input impedance: R 2 Trade off: Input impedance versus voltage gain. 8ANALOG ELECTRONICS

Virtual Ground Versus An Ordinary Ground Node X is a virtual ground, but not an ordinary ground. If X were an ordinary ground, current from Vin would be diverted from R1since R1 represents a path of high impedance. 9ANALOG ELECTRONICS

Practical Inverting Amplifier (Equating current in R1 and R2) 10ANALOG ELECTRONICS

11ANALOG ELECTRONICS

Generalized Inverting Amplifier 12ANALOG ELECTRONICS

Integrator Analysis in the Frequency Domain (Pole at the origin) 13ANALOG ELECTRONICS

Frequency Response of Integrator (Pole at the origin) (Pole frequency is obtained by setting the denominator to zero) 14ANALOG ELECTRONICS

Integrator Analysis in the Time Domain 15ANALOG ELECTRONICS

16ANALOG ELECTRONICS

Active Integrator Versus Passive Integrator Current decreases as Vout rises, leading to a slower increase in Vout. Passive integrator approximates the behavior of an active integrator. (Active integrator) (Passive integrator) 17ANALOG ELECTRONICS

An Integrator with Finite Gain 18ANALOG ELECTRONICS

19ANALOG ELECTRONICS

Frequency Domain Analysis of Differentiator Frequency Domain Analysis 20ANALOG ELECTRONICS

Time Domain Analysis of a Integrator Time Domain Analysis 21ANALOG ELECTRONICS

Example 22ANALOG ELECTRONICS

Active Differentiator Circuit Versus Passive Differentiator Circuit Node X is not pinned to ground. Capacitor can not charge instantaneously. Therefore, Vout rises rapidly to V1 initially. 23ANALOG ELECTRONICS

Practical Differentiator 24ANALOG ELECTRONICS

25ANALOG ELECTRONICS

Voltage Adder (Application: Noise Cancellation) 26ANALOG ELECTRONICS