EE 4BD4 Lecture 6

Amplifiers and Other Analog Circuits

1

Need for Amplifiers

2

Operational Amplifiers(Important Specifications)

• Input Impedance• Gainbandwidth Product (GBWP)• Unit Gain Frequency Response• Slew Rate• Noise (Referred to Input)• Power Consumption• Offset Voltage• Power Supply Range

3

Rules for Circuit Design

• In the linear operating range voltages at each input terminal are equal

• Input impedance at each terminal = ∞

4

Typical Circuits

• Inverting Amplifier• Voltage Follower• Non Inverting Amplifier• Summing Amplifier• Active Filters• Differential Amplifier• Comparator

5

Active Filters

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Comparator with Hysteresis

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Monolithic Instrumentation Amplifier

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