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Q#1 MOSFET GATE EC 2024 MCQ +1 mark -0.33 marks

For the closed loop amplifier circuit shown below, the magnitude of open loop low frequency small signal voltage gain is 40. All the transistors are biased in saturation. The current source  is ideal. Neglect body effect, channel length modulation and intrinsic device capacitances. The closed loop low frequency small signal voltage gain  (rounded off to three decimal places) is________.

0.976

1.000

1.025

0.488

Explanation:

Given open loop gain  

For the given differential amplifier with current mirror as active load.

Closed Loop gain

 

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