Special Purpose Op Amp Circuits » Exercise – 1
1. 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
2. Instrumentation amplifiers are normally used to measure
(a) small differential signal voltages.
(b) signals superimposed on a common-mode voltage often much larger than the signal voltage.
(c) both of the above
(d) none of the above
3. Refer to given circuits. Which circuit is known as an OTA?
(a) a
(b) b
(c) c
(d) d
4. Refer to given circuits. Which circuit is known as a current-to-voltage converter?
(a) a
(b) b
(c) c
(d) d
5. A(n) ________ amplifier provides “a barrier” between the input and output for the protection of human life or sensitive equipment.
(a) instrumentation
(b) isolation
(c) operational transconductance
(d) voltage-to-current
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