What is Voltage follower?
A unity-gain op-amp circuit with the output tied directly to the inverting input. With high input impedance and low output impedance, it is used as a buffer.
Voltage follower in the explanations
A voltage follower is a non-inverting amplifier with the output tied directly to the inverting input (gain 1), so the output equals the input.
Which correctly describes a voltage follower using an op-am…Its gain cannot be less than 1 (R2 = 0 gives a voltage follower).
In a non-inverting amplifier using an ideal op-amp, with in…So when measuring with a microcontroller's ADC, for instance, the divider resistors are chosen to minimize loading or the output is buffered with a voltage follower.
Two 10 kΩ resistors are connected in series across a 10 V s…
Questions that mention Voltage follower (3)
- Which correctly describes a voltage follower using an op-amp?
- In a non-inverting amplifier using an ideal op-amp, with input-side resistor R1 = 10 kΩ and feedback resistor R2 = 90 kΩ, what is the voltage gain?
- 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)?
Related terms
Operational amplifier (op-amp) Phase margin Microcontroller 1/f noise (flicker noise) Bandgap voltage reference CMRR (common-mode rejection ratio) Comparator Cutoff frequency Differential amplifier Gain-bandwidth product (GBW)