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2. Differential amplifier - Wikipedia

   en.wikipedia.org/wiki/Differential_amplifier

   Figure 5: Op-amp differential amplifier. An operational amplifier, or op-amp, is a differential amplifier with very high differential-mode gain, very high input impedance, and low output impedance. An op-amp differential amplifier can be built with predictable and stable gain by applying negative feedback (Figure 5).

3. Common-mode rejection ratio - Wikipedia

   en.wikipedia.org/wiki/Common-mode_rejection_ratio

   In electronics, the common mode rejection ratio (CMRR) of a differential amplifier (or other device) is a metric used to quantify the ability of the device to reject common-mode signals, i.e. those that appear simultaneously and in-phase on both inputs. An ideal differential amplifier would have infinite CMRR, however this is not achievable in ...

4. Fully differential amplifier - Wikipedia

   en.wikipedia.org/wiki/Fully_differential_amplifier

   A fully differential amplifier (FDA) is a DC-coupled high-gain electronic voltage amplifier with differential inputs and differential outputs. In its ordinary usage, the output of the FDA is controlled by two feedback paths which, because of the amplifier's high gain, almost completely determine the output voltage for any given input.

5. Power supply rejection ratio - Wikipedia

   en.wikipedia.org/wiki/Power_supply_rejection_ratio

   where is the voltage gain. For example: an amplifier with a PSRR of 100 dB in a circuit to give 40 dB closed-loop gain would allow about 1 millivolt of power supply ripple to be superimposed on the output for every 1 volt of ripple in the supply. This is because

6. Amplifier figures of merit - Wikipedia

   en.wikipedia.org/wiki/Amplifier_figures_of_merit

   In most amplifiers a reduction in gain takes place before hard clipping occurs; the result is a compression effect, which (if the amplifier is an audio amplifier) sounds much less unpleasant to the ear. For these amplifiers, the 1 dB compression point is defined as the input power (or output power) where the gain is 1 dB less than the small ...

7. Gain (electronics) - Wikipedia

   en.wikipedia.org/wiki/Gain_(electronics)

   A gain greater than one (greater than zero dB), that is, amplification, is the defining property of an active device or circuit, while a passive circuit will have a gain of less than one. [4] The term gain alone is ambiguous, and can refer to the ratio of output to input voltage (voltage gain), current (current gain) or electric power (power ...

8. Differential gain - Wikipedia

   en.wikipedia.org/wiki/Differential_gain

   Differential gain is a kind of linearity distortion that affects the amplification and transmission of analog signals. It can visibly affect color saturation in analog TV broadcasting . Composite color video signal

9. Gain compression - Wikipedia

   en.wikipedia.org/wiki/Gain_compression

   Power transfer curve for an ideal amplifier (green) with a linear gain of 3 and a real amplifier (red) whose gain gets more compressed as the input increases. At 2 Watts input, the ideal amplifier outputs 6 Watts while the real amplifier outputs ~5 Watts (a gain compression of 0.79 dB). Its OP1dB is just above 2 Watts.