The bandwidth at maximum capacity - this is the frequency at which the gain of voltage feedback is 3 dB below the gain feedback on the zero frequency at maximum amplitude and slew rate signal.

The various components of the scheme OC are sources of noise. This noise is amplified along with the useful signal and appears at the output. The influence of internal noise OC expressed through the equivalent noise Voltage applied between the two entrances OC. The equivalent input voltage noise, vt (n) - a random voltage with a dc component equal to zero, with non-zero standard deviation. Voltage noise is proportional to the square root of the bandwidth of the amplifier (with feedback), ie, to assess and "(") need to know the frequency range of the amplifier. Very often to describe the voltage noise spectral density is used, which is equal to the voltage noise per unit bandwidth (ie 1 Hz) and is usually expressed in units of nV/Gts1/2.

Input current (bias current) OC - DC, but there are slight fluctuations in the input current having a random nature. Fluctuations can be regarded as a noise current which is superimposed on a constant input current, and provide in the form nsshnego to OU current source. Input current noise is usually expressed in terms of its spectral density, usually in units of pA/Gts1/2.

Gain of the differential napryaokeniya, A change in the ratio of output voltage to a change in voltage between the two inputs OC, VDM - VA - VB. The gain of the differential voltage is absolutely identical to the gain of the voltage OU without feedback, ADM = AOL = AV0/AVW

Gain common-mode voltage, the AFM, the ratio of change of output voltage to the common-mode input voltage OC, LPC = AV0/AVCM- common-mode input voltage - the arithmetic mean of the two input voltages OC, VCM = (VA + VB) / 2.