GATE EC 2016 Set 3 — Question 52
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.NAT+2 / -0HardLow & High Frequency ResponseBJT & MOSFET AmplifiersAnalog Circuits
Analog Circuits → BJT & MOSFET Amplifiers → Low & High Frequency Response
Last updated
Question
In the circuit shown in the figure, transistor M1 is in saturation and has transconductance siemens. Ignoring internal parasitic capacitances and assuming the channel length modulation to be zero, the small signal input pole frequency (in kHz) is __________
Correct answer
56 to 63
Solution
Given:
Transconductance S
Load resistance k
Source resistance k
Feedback capacitance (gate-to-drain) pFStep 1: Calculate the voltage gain of the common-source amplifier.
Step 2: Calculate the Miller capacitance at the input.
pFStep 3: Calculate the input pole frequency .
The input pole is formed by the source resistance and the total input capacitance (dominated by Miller capacitance).
kHzThe value kHz lies within the specified range of 56 to 63.
Transconductance S
Load resistance k
Source resistance k
Feedback capacitance (gate-to-drain) pFStep 1: Calculate the voltage gain of the common-source amplifier.
Step 2: Calculate the Miller capacitance at the input.
pFStep 3: Calculate the input pole frequency .
The input pole is formed by the source resistance and the total input capacitance (dominated by Miller capacitance).
kHzThe value kHz lies within the specified range of 56 to 63.
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE EC question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on BJT & MOSFET Amplifiers
2026 Set 1 Q17The ideal OP-AMP circuit shown in the Figure produces output voltage when the Switch, S,…2026 Set 1 Q18Consider the circuit shown in the Figure with and . Assume…2026 Set 1 Q50A small signal source, is applied to a BJT circuit as…2026 Set 1 Q53A circuit using an ideal OP-AMP is shown in the Figure. Which of the following options gives the…2026 Set 1 Q60An -channel MOSFET is connected as shown in the Figure. Assume ,…