Analog Electronics
IGFET is a

  half - power device.
  3 / 2 power - low device .
  square - law device.
  linear device.

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Analog Electronics
The typical input stage of an opamp has a

  differential input and differential output.
  differential input and single - ended output.
  single - ended input and differential output.
  single - ended input and single-ended output.

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