7 Figure P8.27 shows a simple practical amplifierthat uses the 741 op-amp. Pin numbers are asindicated. Assume the input resistance is R=2 M2,the open-loop gain Av(OL) = 200,000, and outputresistance R, = 50 2. Find the exact gain Ay = vo/vj.+15 V1 k2ww111049.Vị10 k2-15 V100 k21 k2

The circuit diagrams are shown below: Since the open-loop gain of the op-amp is very large also the…

Answered: 7 Figure P8.27 shows a simple practical…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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4. PD FB IN- 1 2 3 IN+ 4 8 VS+ 7 6 5 OUT NC VS- Using the Op-Amp diagram shown above, draw a line to create: 4.a. non-inverting amplifier 4.b. Inverting amplifier
Figure 6 (a) shows the circuit diagram for a differential amphfier. You may assume that M and M, have identical parameters. Referring to Figure 6 (a): (a) What kind of amplifier is it? What is its role in a three-stage op amp? Draw the small signal equivalent eircuit and derive the differential voltage gain Aag. For the analysis consider RDI RD2 >>Rp State any assumption. (b) RD. gml gm gm, and r re=r What is the new Adr in the circuit of Figure 6 (b), where a PMOS current source has replaced the two drain resistors Ror R Rp and a NMOS current sink has replaced the source resistor Rs? (c) What are the advantages in using the circuit of Figure 6 (b) instead of Figure 6 (a) to realize an op amp? (d) Ven Ms Mg Rp1 Rpa Vo HM, My M Ma M3 Vss 0 V Vss 0 V Figure 6(b) Figure 6 (a)
+Vcc Vin VI Vo Vref VN -Vcc Ry RxL Figure Q.A2(e). Inverting Schmitt-trigger circuit. (ii) The operational-amplifier (op-amp) of the inverting Schmitt-trigger in Figure Q.A2(e) has saturation voltages of +Vsat = +11 V and -Vsat = -11 V. The voltage divider circuit has the relationship of Rx = 2RY with the value of RY being 100 kn. Using the relationships derived above: (a) Calculate the values of the upper threshold point (UTP or Vi*), lower threshold point (LTP or Vr). (b) Now, sketch the input-output characteristic of the inverting Schmitt- trigger. Clearly label axes, the threshold voltages and the saturation voltages in your sketch.
A certain op-amp has three internal amplifier stages with midrange gains of 30 dB, 40 dB, and 20 dB. Each stage also has a critical frequency associated with it as follows: fc1 = 600 Hz, fc2 = 50 kHz, and fc3 = 200 kHz. (a) What is the midrange open-loop gain of the op-amp, expressed in dB? (b) What is the total phase shift through the amplifier, including inversion, when the signal frequency is 10 kHz?
2. Suppose we have an op-amp that is powered by a ±15 V supply (assume Vout max is ±14V), and has a maximum output current of 50 mA. The maximum slew rate of the op amp is 107 V/s. In the circuit below where Vin=5sin(100t). a. What would the output voltage Vout be if the op amp were ideal? b. Compute and draw the actual output voltage if a load resistor of Rload=100 N is attached to Vout. Vin ww 1 ΚΩ ww 4 ΚΩ + +15V Op-Amp -15V Vout

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