ch07 - Fundamentals of Microelectronics CH1 CH2 CH3 CH4 CH5...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Fundamentals of Microelectronics CH1 Why Microelectronics? CH2 Basic Physics of Semiconductors CH3 Diode Circuits CH4 Physics of Bipolar Transistors CH5 Bipolar Amplifiers CH6 Physics of MOS Transistors CH7 CMOS Amplifiers CH8 Operational Amplifier As A Black Box
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Chapter 7 CMOS Amplifiers 7.1 General Considerations 7.2 Common-Source Stage 7.3 Common-Gate Stage 7.4 Source Follower 7.5 Summary and Additional Examples
Background image of page 2
CH7 CMOS Amplifiers 3 Chapter Outline
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
CH7 CMOS Amplifiers 4 MOS Biasing Voltage at X is determined by V DD , R 1 , and R 2 . V GS can be found using the equation above, and I D can be found by using the NMOS current equation.   S ox n TH DD TH GS R L W C V V R R V R V V V V V 1 2 1 2 1 2 1 2 1 1
Background image of page 4
CH7 CMOS Amplifiers 5 Self-Biased MOS Stage The circuit above is analyzed by noting M1 is in saturation and no potential drop appears across R G . DD D S GS D D V I R V R I
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
CH7 CMOS Amplifiers 6 Current Sources When in saturation region, a MOSFET behaves as a current source. NMOS draws current from a point to ground (sinks current), whereas PMOS draws current from V DD to a point (sources current).
Background image of page 6
CH7 CMOS Amplifiers 7 Common-Source Stage D D ox n v D m v R I L W C A R g A 2 0
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
CH7 CMOS Amplifiers 8 Operation in Saturation In order to maintain operation in saturation, V out cannot fall below V in by more than one threshold voltage. The condition above ensures operation in saturation.   TH GS DD D D V V V I R
Background image of page 8
9 CS Stage with =0 L out in L m v R R R R g A
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10 CS Stage with 0 However, Early effect and channel length modulation affect CE and CS stages in a similar manner.   O
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 40

ch07 - Fundamentals of Microelectronics CH1 CH2 CH3 CH4 CH5...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online