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A good Sample and Hold circuit should have
  1. High input impedance
  2. High output impedance
  3. Low input impedance 
  4. Low output impedance
  • a)
    1 and 2 only
  • b)
    2 and 3 only
  • c)
    3 and 4 only
  • d)
    1 and 4 only
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A good Sample and Hold circuit should have High input impedance High o...
Sample and Hold (S/H) circuit:
It is used with an analog to digital converter to sample the input analog signal and hold the sample signal.
Circuit:- 
Properties:
1. A S/H Circuit should have high input impedance and low output impedance because due to high input impedance loading effect [It is the degree to which a measurement instrument impact electrical properties (Voltage, Current, resistance) of a Circuit] is less and Circuit performance is better.
Conclusions:
for better circuit performance input impedance should be high and output impedance should be low.
Option 4 correct choice.
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