Analog and electronic circuits

Which metric indicates how well a circuit keeps supply-voltage fluctuations from reaching its output?

  1. ACMRR
  2. BPSRR (power supply rejection ratio)
  3. CSlew rate
Show answer and explanation

Answer: B. PSRR (power supply rejection ratio)

PSRR (power supply rejection ratio) indicates how much supply-voltage variation appears at the output; the larger it is, the less the circuit is affected by supply noise. It is important for circuits powered by switching supplies and for analog circuits that share a supply with digital circuits.

Practice this topic Back to topic

More Analog and electronic circuits questions

  1. Which metric is used to judge whether a negative-feedback amplifier operates stably without oscillating?
  2. Compared with a class A amplifier, which is a characteristic of a class B push-pull amplifier?
  3. When a current of 1 mA flows through a 10 kΩ resistor, what is the voltage across it?
  4. What is the combined resistance of two 10 kΩ resistors connected in parallel?
  5. Two 10 kΩ resistors are connected in series across a 10 V supply. What is the voltage at the point between them (relative to ground)?