3. An op-amp is connected in the inverting amplifier configuration. The gain of the amplifier is set to -50 by using 100k2 and 2 k2 resistors in the feedback circuit. A 2 k resistor is used to connect the v+ terminal to ground. The op-amp is non-ideal and has parameters IBIAS 10uA, Io 0, Vio +10 mV and slew rate 1 V/us. Find the dc offset component at the output voltage caused by the non-ideal parameters. 4. A high-gain op-amp circuit is formed by cascading two inverting amplifiers in series. Both op-amps are connected to ±15V power supplies. The first stage has a gain of -20. The cascade is to be designed so that the peak output voltage of the second stage comes no closer than IV to either power supply voltage. The cascade is built from non-ideal op-amps with Vio-2mVand IBIAS 0, I10-0. a) If both stages remain in the linear region, find an expression for the output voltage that includes the effect of Vio. Express the gain of each stage in terms of the ratio of its resistor values. (Stage 1 gain--R/R; stage 2 gain = -R4/R3.) b) If VIN is a sinusoid of 25mV peak magnitude, what is the maximum gain of the second stage if your is to remain within the specified swing limits? 5. An op-amp is connected in the inverting amplifier configuration. The gain of the amplifier is set to -50 and the op-amp has a slew rate = 1 V/us. a) If the input voltage is a 10-mV peak sinusoid, what is the maximum frequency that can be applied before the slew rate limitation is reached? 1