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Electronic Devices & CircuitsDifferential Amplifiers

An active load is often used in an integrated differential amplifier primarily because it can provide?

  • AHigh effective load resistance and increased voltage gain
  • BMechanical isolation
  • CA low-frequency clock
  • DA fixed diode forward drop only
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Correct Answer: A. High effective load resistance and increased voltage gain
Explanation: Transistor active loads can present a high small-signal resistance while occupying little IC area, which increases amplifier voltage gain.
Reference: Standard analog electronics: active loads
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