OP-AMP is a circuit which can perform logical mathematical operations.

+

inverting input

non-inverting input

V

output

V+

Characteristics of an Characteristics of an Ideal OP-AMPIdeal OP-AMP

•Infinite Voltage Gain

•Infinite Bandwidth

•Infinite Input Resistance

• Zero Output Resistance

•Zero Offset Voltage

• Infinite CMRR

InputStage

Inter-mediate

stage

LevelShiftingstage

Outputstage

Emitter follower With constant Current source

Complementary

Push Pull

amplifier

Dual input

Balanced

Output

Diff.Amp

Dual input

Unbalanced

Output

Diff.Amp

•Inverting •Non-Inverting

A summing amplifier sums several (weighted) voltages:

Output is Inverted

When and Rf independent

When

To study applications of OP-AMP as Subtracting and Summing amplifier.

OP-AMP designer kit consisting of-

• Inbuilt 741-IC.

• Inbuilt resistors of different values.

•