GATE EC 2018 Set 1 — Question 13
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Analog Circuits → Feedback & Oscillators → Ideal & Non-Ideal Op-Amp
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Question
A good transimpedance amplifier has
Correct answer
(D) low input impedance and low output impedance.
Solution
A transimpedance amplifier (TIA) is a current-to-voltage converter. To accurately sense the input current without loading the source, it must have a very low input impedance (). To provide the output voltage to a subsequent stage without signal loss, it must have a very low output impedance ().
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