- Jul 06, 2017 -
Definition and classification of indicators for amplifiers
Common Mode Rejection Ratio CMRR: Differential Mode Gain / Common Mode Gain
Input Common Mode Range ICMR: Common Mode Signal Range for Linear Amplification of Differential Mode Signal
Output offset voltage: the input terminal connected to the actual output voltage and the ideal output voltage difference, also known as zero drift.
Input offset voltage VOS: Output offset voltage divided by differential mode voltage gain
Supply Voltage Suppression Ratio PSRR: Supply voltage variation times the open loop gain, divided by the resulting output voltage change; Amplifier the gain from input to output divided by the gain from the power supply to the output
Noise figure: Input signal to noise ratio divided by output signal to noise ratio
Rated power: the maximum output power at the time of impedance matching, also known as power consumption.
AC parameters: frequency or time affected parameters, such as: differential mode voltage gain, bandwidth, slew rate, settling time, maximum differential mode input voltage, maximum common mode input voltage, maximum output current, Amplifier peak output voltage, Pole capacitance.
DC parameters: also known as 0-frequency parameters, offset voltage, bias current, offset current, voltage and current temperature drift, pinch voltage, leakage current.
Ripple Voltage Suppression Ratio: The input ripple voltage peak-to-peak value is divided by the output ripple voltage peak-to-peak value
Static parameters: DC input when input is 0, instantaneous value unchanged.
Dynamic parameters: AC parameters when an AC signal is input.
Dynamic range: no distortion range.
Linear Distortion: In the linear work area, Amplifier distortions are generated for different frequency components, including amplitude distortion and phase distortion.
Nonlinear distortion: due to distortion in the nonlinear work area, regardless of frequency, including saturation distortion, cut-off distortion.
Total Harmonic Distortion THD: Amplifier Divide the square of the amplitude of the frequency component of the frequency component other than the fundamental frequency by the square of the amplitude of the fundamental frequency component.
Nonlinearity: The characteristic curve is not a straight line but does not represent distortion.