Electronic Devices and Circuits

8.

Multistage Amplifiers

8.1.

Cascaded Amplifier Systems

8.1.1.

Overall Gain Calculation

8.1.1.1.

Voltage Gain Product

8.1.1.2.

Current Gain Product

8.1.1.3.

Power Gain Product

8.1.2.

Loading Effects

8.1.2.1.

Interstage Loading

8.1.2.2.

Input and Output Loading

8.1.3.

Impedance Matching

8.2.

Coupling Methods

8.2.1.

8.2.1.1.

Capacitive Coupling

8.2.1.2.

Frequency Response Effects

8.2.1.3.

8.2.2.

Transformer Coupling

8.2.2.1.

Impedance Transformation

8.2.2.2.

Frequency Response

8.2.2.3.

Center-Tapped Configurations

8.2.3.

Direct Coupling

8.2.3.1.

DC Amplification

8.2.3.2.

Level Shifting Requirements

8.2.3.3.

8.3.

Cascode Amplifiers

8.3.1.

BJT Cascode Configuration

8.3.1.1.

Common-Emitter Common-Base Cascade

8.3.1.2.

High Frequency Performance

8.3.1.3.

Miller Effect Reduction

8.3.2.

FET Cascode Configuration

8.3.2.1.

Common-Source Common-Gate Cascade

8.3.2.2.

High Input Impedance

8.4.

Darlington Pair

8.4.1.

Configuration and Operation

8.4.2.

High Current Gain

8.4.3.

Input Impedance Characteristics

8.5.

Differential Amplifiers

8.5.1.

BJT Differential Pair

8.5.1.1.

Circuit Configuration

8.5.1.2.

Differential-Mode Operation

8.5.1.3.

Common-Mode Operation

8.5.2.

Common-Mode Rejection Ratio (CMRR)

8.5.2.1.

Definition and Importance

8.5.2.2.

CMRR Calculation

8.5.2.3.

Improvement Techniques

8.5.3.

Current Mirror Load

8.5.3.1.

Active Load Benefits

8.5.3.2.

8.5.4.

FET Differential Pair

8.5.4.1.

Circuit Configuration

8.5.4.2.

Advantages over BJT Version

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7. Single-Stage Amplifiers

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9. Frequency Response of Amplifiers