GATE EC 2023 Set 1 — Question 64
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Analog Circuits → Current Mirrors & Diff Amps → Current Mirror (BJT & MOS)
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Question
In the circuit below, the voltage is ____________ V (rounded off to two decimal places).
Correct answer
2 to 2
Solution
1.The reference current is established in the first branch with a PMOS transistor of .
2.This current is mirrored to the second branch with a PMOS transistor of . The current in this branch is .
3.This current flows through an NMOS transistor with . This NMOS transistor acts as a reference for another NMOS mirror with . The current in the NMOS mirror is .
4.Simultaneously, the reference current is mirrored to the output branch by a PMOS transistor with . The current provided by this PMOS is .
5.The net current flowing into the load resistor is the difference between the PMOS source current and the NMOS sink current: .
6.The voltage is calculated using Ohm's law: .
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