Special-Purpose Op-Amp Circuits 2 Questions and Answers

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Showing 10 of 30 questions
Q21
An OTA has
  • A a bias-current input terminal.
  • B high output impedance.
  • C no fixed open-loop voltage gain.
  • D all of the above
Answer: Option D
Q22
One of the key characteristics of an instrumentation amplifier is high input impedance.
  • A TRUE
  • B FALSE
Answer: Option A
Q23
Instrumentation amplifiers are commonly used in environments with high common-mode noise.
  • A TRUE
  • B FALSE
Answer: Option A
Q24
A constant-current source delivers a load current that remains constant only when the load resistance remains constant.
  • A TRUE
  • B FALSE
Answer: Option B
Q25
An OTA is primarily a current-to-voltage amplifier.
  • A TRUE
  • B FALSE
Answer: Option B
Q26
One of the principal areas of application for an isolation amplifier is power plant instrumentation.
  • A TRUE
  • B FALSE
Answer: Option A
Q27
An isolation amplifier provides ac isolation between input and output.
  • A TRUE
  • B FALSE
Answer: Option B
Q28
The main purpose of an instrumentation amplifier is to amplify small signals riding on large common-mode voltages.
  • A TRUE
  • B FALSE
Answer: Option A
Q29
In an isolation amplifier, the third op-amp is used as a unity-gain differential amplifier.
  • A TRUE
  • B FALSE
Answer: Option B
Q30
To construct an instrumentation amplifier, two op-amps and seven resistors are needed.
  • A TRUE
  • B FALSE
Answer: Option B

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