Question

Notify Me Bookmark

For a prototype OpAmp, given VDD = 8 V, -VSS = -8 V, and given gm2 = gm6 = gm7 = gm8 = 5mS, gmg = 1.2mS. VTN = 1.3 V, VTP = -1.0 V VGS1 = VGS2 = VGS5 = VGS6 = 2 V, VGS7 = VGS8 = 2.1 V, VSG10 = VSG11 = 1.7 V. Determine the minimum voltage for the common mode input

For a prototype OpAmp, given VDD = 8 V, -VSS = -8 V, and given gm2 = gm6 = gm7 = gm8 = 5mS, gmg = 1.2mS. VTN = 1.3 V, VTP = -1.0 V VGS1 = VGS2 = VGS5 = VGS6 = 2 V, VGS7 = VGS8 = 2.1 V, VSG10 = VSG11 = 1.7 V. Determine the minimum voltage for the common mode input

Image text
For a prototype OpAmp, given VDD = 8 V, -VSS = -8 V, and given gm2 = gm6 = gm7 = gm8 = 5mS, gmg = 1.2mS. VTN = 1.3 V, VTP = -1.0 V VGS1 = VGS2 = VGS5 = VGS6 = 2 V, VGS7 = VGS8 = 2.1 V, VSG10 = VSG11 = 1.7 V. Determine the minimum voltage for the common mode input

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

For a prototype OpAmp below (differential amplifier cascaded with Common-emitter and Common-Drain), given VDD = 5 V, −VSS = −5 V, IREF = 0.8 mA, (W/L)1 = (W/L)5 = 5. design requires IO2 = 1.1 mA, IO3 = 2 mA, IO4 = 10 mA, assume all MOSFET transistors have λ = 0.02/V, and given gm2 = gm6 = gm7 = gm8 = 5 mS, gm9 = 1.1 ms. For MOSFET ro = (1/λ + |VDS|)/IDS At quiesent condition (v1 = v2 = vo = 0), VGS1 = VGS2 ≅ 2 V, Vds6 ≅ 3 V, Vds3 ≅ 6 V, and Vds4 = 5 V. For PNP transistor Q12, assume |VBE| ≅ 0.7 V, β = 100, VA = 50 V. Determine the CMRR for the OpAmp in dB if RD = 0.9 Kohm, rpi12 = 1.2 Kohm, ro8 = 56 Kohm, ro6 = 22 Kohm, ro2 = 27 Kohm.
Solution
0 0

For the differential amplifier shown here, VDD = VSS = 5 V, the load resistance R = 80 kΩ. The biasing current is provided by a MOSFET current mirror, IREF = 250 μA. For MOSFETs, Kn1,2,8,9 = 0.25 mA/V2, Kp3,4 = 0.20 mA/V2, VTN = VTP = 1.0 V, λ1−4 = 0.01 V−1. Channel length modulation is neglected for M8,9, i.e. λ8,9 = 0. Here VDS is neglected in the calculation of ro. (a) Find the Q points of M1, M3, M8 and M9. (24 pts) (b) Find the differential mode voltage gain and the output resistance. (12 pts) (c) Find the input resistances for the differential mode and common mode. (12 pts)
Solution
1 0

Consider the CMOS inverter given. KN = KP = 10 uA/V2, VTN = 1.3 V, VTP = -1.25 V, VDD = 5 V i. Determine the input voltage VI = VIt, where both transistors PMOS are in SAT. ii. Determine the range of VO where both transistors are SAT. iii. Determine the range of VI such that NMOS is OFF. What is the output voltage then? iv. Determine the range of VI such that PMOS is OFF. What is the output voltage then? v. Determine the points (VIL, VOH) and (VIH, VOL,) vi. Determine the noise margins vii. Calculate the average power dissipation.

Solution
1 0