Electronic Devices-Special-Purpose Op-Amp Circuits
Electronic Devices-Special-Purpose Op-Amp Circuits
21. An OTA has
- a bias-current input terminal.
- high output impedance.
- no fixed open-loop voltage gain.
- all of the above
22. One of the key characteristics of an instrumentation amplifier is high input impedance.
- TRUE
- FALSE
23. Instrumentation amplifiers are commonly used in environments with high common-mode noise.
- TRUE
- FALSE
24. A constant-current source delivers a load current that remains constant only when the load resistance remains constant.
- TRUE
- FALSE
26. One of the principal areas of application for an isolation amplifier is power plant instrumentation.
- TRUE
- FALSE
28. The main purpose of an instrumentation amplifier is to amplify small signals riding on large common-mode voltages.
- TRUE
- FALSE
29. In an isolation amplifier, the third op-amp is used as a unity-gain differential amplifier.
- TRUE
- FALSE
30. To construct an instrumentation amplifier, two op-amps and seven resistors are needed.
- TRUE
- FALSE