Calculate the required open loop gain A to achieve the closed-loop gain within 2 % of its ideal value.

Question

Want to see the full answer?

Answer 1

Question

Chapter 6, Problem 49E

To determine

Calculate the required open loop gain A to achieve the closed-loop gain within 2% of its ideal value.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

For the signal and circuit of Figure 6, the op-amp has a slew rate of SR=0.75 V/µs. a) Calculate the maximum frequency that may be used. b) Determine if the signal will be an amplified duplicate at the output.

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)

Figure 6 (a) shows the circuit diagram for a differential amplifier. You may assume that M1 and M2 have identical parameters. Referring to Figure 6 (a): (а) What kind of amplifier is it? What is its role in a three-stage op amp? Draw the small signal equivalent circuit and derive the differential voltage gain Adiff. For the analysis consider RD1 = RD2 = RD, gml = gm2 gm, and rol = ro2 =r >>Rp. State any assumption. (b) What is the new Adiff in the circuit of Figure 6 (b), where a PMOS current source has replaced the two drain resistors RpI = RD2 = RD 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) VDD VDD M6 Vo M5 RB Rp1 Rp2 Vo M1 M2 V12 Vil M1 M2 Vi2 Vi1 M4 M3 Rs Vss = 0 V %3D Vss = 0 V Figure 6(b) Figure 6 (a)