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Single-Stage Integrated- Circuit Amplifiers. IC Biasing 6.3.1 The Basic MOSFET Current Source SATURATION.

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Presentation on theme: "Single-Stage Integrated- Circuit Amplifiers. IC Biasing 6.3.1 The Basic MOSFET Current Source SATURATION."— Presentation transcript:

1 Single-Stage Integrated- Circuit Amplifiers

2 IC Biasing 6.3.1 The Basic MOSFET Current Source SATURATION

3 IC Biasing MOS Current-Steering Circuits Effect of V o on I o Difference Q 2 and Q 5 Current Source, Current Sink

4 IC Biasing BJT Circuits Current Transfer Ratio Case 1: m = 1 Case 2: Output Resistance

5 IC Biasing BJT Circuits – Current Steering Effect of V o on I o

6 High-Frequency Response The High-Frequency Gain Function S  0, F(s)  1

7 High-Frequency Response Determining the 3-dB Frequency f H A dominant pole exits if the lowest frequency pole is at least two octaves (a factor of 4) away from the nearest pole or zero.

8 High-Frequency Response Determining the 3-dB Frequency f H (cont.)

9 High-Frequency Response Determining the 3-dB Frequency f H (cont.)

10 High-Frequency Response Using Open-Circuit Time Constants for the Approximate Determination of f H Difficult to obtain poles and zeros R io : Seen by C i when reducing all other capacitance to zero and reducing the input signal to zero

11 High-Frequency Response Example 6.6 Small Signal Equivalent Circuit for CS Amplifier Frequency Response for CS Amplifier Triode Saturation

12 High-Frequency Response Example (cont.)

13 High-Frequency Response Example (cont.)

14 High-Frequency Response Example (cont.)

15 High-Frequency Response Example (cont.)

16 High-Frequency Response Miller’s Theorem

17 High-Frequency Response Miller’s Theorem --- Example

18 High-Frequency Response Miller’s Theorem --- Example (cont.)

19 High-Frequency Response Miller’s Theorem --- Example (cont.)

20 The CS and CE Amplifiers with Active Loads

21

22 Homework 6.34, 6.36, 6.40, 6.41, 6.45, 6.54, 6.57


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