EE206 Quiz A-3

v_I = 0.5 V. Find v_O.

• 5 V

• 0 V

• 1 V

• 2.5 V

v_I = 5 V. Find v_O.

• 0.06 V

• 5 V

• 1 V

• 2.5 V

This is an I-V graph of a MOSFET inverter with a resistor load. When, v_GS = 1.25 V, find v_DS.

• 1.2 V

• 2 V

• 0 V

• 2.5 V

This is an I-V graph of a MOSFET inverter with a resistor load. When, v_GS = 1.75 V, find v_DS.

• 0.35 V

• 0 V

• 1.75 V

• 2.5 V

Choose a statement which does NOT correctly describe a practical inverter.

• The switching voltage (V_S) is exactly V_DD/2.

• There are unknown regions for both input and output.

• V_H may not reach V_DD and V_L may not reach ground.

• The VTC is composed of two low gain regions and one high gain region.

An inverter has the following characteristic voltages. Calculate the noise margins.

V_H = 5 V, V_L = 0.2 V, V_OH = 4 V, V_OL = 0.5 V, V_IH = 3 V, V_IL = 1.5 V

• NM_H = 1 V

  NM_L = 1 V

• NM_H = 2 V

  NM_L = 1.3 V

• NM_H = 2.5 V

  NM_L = 2.5 V

• NM_H = -1 V

  NM_L = -1 V

A MOSFET inverter with a resistor load has the following parametric values. Calculate the noise margins.

V_DD = 5 V, V_TN = 1.5 V, K_n = 10 mA/V², R = 100 Ω

• NM_H = 0.36 V

  NM_L = 0.67 V

• NM_H = 4 V

  NM_L = 0.67 V

• NM_H = 4 V

  NM_L = 2.5 V

• NM_H = 0.36 V

  NM_L = 2.5 V

v_I is 2.5 V. What are the operation modes of M_N and M_P?

• M_N: triode

  M_P: cutoff

• M_N: constant-current

  M_P: cutoff

• M_N: cutoff

  M_P: triode

• M_N: cutoff

  M_P: constant-current

• M_N: cutoff

  M_P: cutoff