Mosfet differential amplifiers (content)

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Topic 4 : MOSFET Differential Amplifiers

Part 2.2
Multi-Stage and
Differential Amplifiers
Assoc Prof Zheng Yuanjin email: yjzheng@ntu.edu.sg
EE2002 Analog Electronics

Biasing with Electronic Current Sources
• Differential amplifiers are biased using electronicV
CC
current sources to stabilise the operating pointRC RC
v
C1 vC2
and increase effective value of R to improveQ2 EEQ1
CMRR.v1
+
-
+
- v2
I
EE
- VEE
• Electronic current source has a DC current equal
to I (or I ) and an output resistance equal toV
DD
EE SS
R (or R ).EE SSRD RD
v
D2
v
D1
M1 M2
• DC model of the electronic current source is a
DC current source, I (or I ) while AC model isv1
+
-
+
v2
- EE SSI
SS
a resistance R (or R ).EE SS-VSS
EE2002 Analog Electronics Multi-Stage and Differential Amplifiers 28

Multi-Stage and
Differential Amplifiers
-End of Lecture-

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Built environment is known for its capacity, capability, role, relevance and importance to change the quality of life of the occupants and communities. Presentation focuses on options which need to be leveraged to make buildings sustainable, cost-effective, energy efficient, resource efficient, qualitative over its entire life-cycle through designing, construction, operation. It calls for making buildings green and sustainable.

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Mosfet differential amplifiers (content)

1. Part 2.2 Multi-Stage and Differential Amplifiers Assoc Prof Zheng Yuanjin email: yjzheng@ntu.edu.sg EE2002 Analog Electronics

2. Biasing with Electronic Current Sources • Differential amplifiers are biased using electronicV CC current sources to stabilise the operating pointRC RC v C1 vC2 and increase effective value of R to improveQ2 EEQ1 CMRR.v1 + - + - v2 I EE - VEE • Electronic current source has a DC current equal to I (or I ) and an output resistance equal toV DD EE SS R (or R ).EE SSRD RD v D2 v D1 M1 M2 • DC model of the electronic current source is a DC current source, I (or I ) while AC model isv1 + - + v2 - EE SSI SS a resistance R (or R ).EE SS-VSS EE2002 Analog Electronics Multi-Stage and Differential Amplifiers 28

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8. Multi-Stage and Differential Amplifiers -End of Lecture-