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Unformatted text preview: LARGE-SIGNAL OPERATION OF OP-AMPS Output Voltage Saturation Op-Amp with Rated Output Voltage of 13V a) For Vp = 1 and R L = 1kohm, specify the signal resulting at the output of the amplifier. b) For Vp = 1.5 and R L = 1kohm, specify the signal resulting at the output of the amplifier. c) For R L = 1kohm what is the maximum value of Vp for undistorted output? d) For Vp = 1V what is the lowest value of R L for undistorted output? Output Current Limits As an example the 741 op amp has a current limit of 20 mA. If the circuit is required to exceed this current, the output voltage will saturate at the voltage that produces the current limit. The circuit above has a current limit of 20 mA. Find output vor Vp=1 an 1.5 Volts. For R L = 1kohm find maximum Vp without saturation. For Vp = 1V find minimum R L without saturation. Slew Rate max dt dv SR = Usually expressed in s V / Slew Rate Without Slew rate; t i s V V / 1 1 + = , and ) 1 ( ) ( t w t e V t v- = The slope of the last function is...
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