1. Consider an nMOS transistor in a 0.6 m process with W/L= 1.2/0.6 (m/m). In this...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. Consider an nMOS transistor in a 0.6 μm process with W/L= 1.2/0.6 (μm/μm). In this process the gate oxide thickness is 100 Å and the mobility of electrons is 350 cm²/V-s. The threshold voltage is 0.7 V. Plot los versus Vos for VGs = 0, 1, 2, 3, 4 and 5 V. 2. A 90nm long transistor has a gate oxide thickness of 16 Å. What is it gate capacitance per micron of width. 3. Consider the nMOS transistor in a 0.6 um process with gate oxide thickness of 100Å. The doping level is N₁ = 2×10¹7 cm³ and the nominal threshold voltage is 0.7 V. The body is tied to ground with a substrate contact. How much the threshold voltage changes at room temperature if the source voltage is 4 V instead of 0 V. n₁ = 1.45x100 cm³. 4. An nMOS transistor has a threshold voltage of 0.4 V and a supply voltage of VDD = 1.2 V. A circuit designer is evaluating a proposal to reduce Vth by 100 mV to obtain a faster transistor. a) By what factor would the saturation current increases (at VGS-VDS-VDD), if the transistor were ideal. b) By what factor the subthreshold leakage current increase at room temperature at VGs=0? Assume n=1.4. c) By what factor would the subthreshold current increase at 120°C? Assume threshold voltage independent of temperature. 5. Find the subthreshold leakage current of an inverter at room temperature if the input A=0. Let Bn=2Bp=1 mA/V², n=1.0, and Vtn=0.4V. Assume the body effect and DIBL coefficient are zero. 6. Consider an nFET process that uses an n-type poly gate. The important processing parameter are as follows: Tox= 100Å, NA-10¹5 cm³, μn=580 cm-²/V- sec, VTON=0.7V. a) Calculate the value of the oxide capacitance per unit area Cox. Place your answer in units of F/cm² and fF/μm². b) Find the value of K,' in units of μA/V². c) Find the value of the body bias coefficient y. 7. An nFET process is described by the parameters Kn' = 110 μA/V² and VTon=0.7 V. The voltages are measured to be VGSn=2V and VSBn-OV. a) A FET with an aspect ratio of 4 has a drain current of 340 μA flowing through it. Find the drain-source voltage Vosn b) A different FET is biased with Vosn=2V and VSBn-OV, and the current is measured as 440 μA. Find the gate source voltage VGsn, if the aspect ratio is known to be 8. 8. Evaluate the output of the pass transistor, assume Vtn and Vtp as threshold voltage of nMOS and PMOS, respectively. Neglecting body effect. (a) (b) (C) VDD VDDI 2 GND Vo Vo VODI VDD VDD VDD ĀĀ VDD VDD I (d) VDO VO Vo 9. Evaluate the output of pass transistor, neglecting body effect. (a) (c) VDD AA Fu vo GND VDD GND VDD Vo (d) VDD A GND Vout GND VDD + GND Vo GND VDD 10. Suppose VDD=1.2 V and Vth=0.4V. Determine VouT in Figure below for the following input, neglect body effect. (a) Vin-OV, (b) Vin=0.6V, (c) Vin=0.9V, (d) Vin=1.2V. Vo 11. Sketch a transistor level schematic for a compound CMOS logic gates for each of the following function. i) Y=(ABC+D)' ii) Y=[(AB+C)D]' iii) Y=[AB+C(A+B)]' 12) Use transmission gate and NMOS Pass transistor to generate following function. i) Y=AB'+A'B ii) Y=A'B'+AB iii) Y=AB+BC+AC 13) Consider the design of a CMOS compound OAI gate computing F=[(A+B)C]' a) Sketch a transistor level schematic b) sketch a stick diagram c) estimate the area from the stick diagram d) layout your gate with a CAD tool unit sized transistors e) compare the layout size to the estimated area. 14) Consider the design of a CMOS compound OAI gate computing F=[(A+B)(C+D)]' a) Sketch a transistor level schematic b) sketch a stick diagram c) estimate the area from the stick diagram d) layout your gate with a CAD tool unit sized transistors e) compare the layout size to the estimated area. 1. Consider an nMOS transistor in a 0.6 μm process with W/L= 1.2/0.6 (μm/μm). In this process the gate oxide thickness is 100 Å and the mobility of electrons is 350 cm²/V-s. The threshold voltage is 0.7 V. Plot los versus Vos for VGs = 0, 1, 2, 3, 4 and 5 V. 2. A 90nm long transistor has a gate oxide thickness of 16 Å. What is it gate capacitance per micron of width. 3. Consider the nMOS transistor in a 0.6 um process with gate oxide thickness of 100Å. The doping level is N₁ = 2×10¹7 cm³ and the nominal threshold voltage is 0.7 V. The body is tied to ground with a substrate contact. How much the threshold voltage changes at room temperature if the source voltage is 4 V instead of 0 V. n₁ = 1.45x100 cm³. 4. An nMOS transistor has a threshold voltage of 0.4 V and a supply voltage of VDD = 1.2 V. A circuit designer is evaluating a proposal to reduce Vth by 100 mV to obtain a faster transistor. a) By what factor would the saturation current increases (at VGS-VDS-VDD), if the transistor were ideal. b) By what factor the subthreshold leakage current increase at room temperature at VGs=0? Assume n=1.4. c) By what factor would the subthreshold current increase at 120°C? Assume threshold voltage independent of temperature. 5. Find the subthreshold leakage current of an inverter at room temperature if the input A=0. Let Bn=2Bp=1 mA/V², n=1.0, and Vtn=0.4V. Assume the body effect and DIBL coefficient are zero. 6. Consider an nFET process that uses an n-type poly gate. The important processing parameter are as follows: Tox= 100Å, NA-10¹5 cm³, μn=580 cm-²/V- sec, VTON=0.7V. a) Calculate the value of the oxide capacitance per unit area Cox. Place your answer in units of F/cm² and fF/μm². b) Find the value of K,' in units of μA/V². c) Find the value of the body bias coefficient y. 7. An nFET process is described by the parameters Kn' = 110 μA/V² and VTon=0.7 V. The voltages are measured to be VGSn=2V and VSBn-OV. a) A FET with an aspect ratio of 4 has a drain current of 340 μA flowing through it. Find the drain-source voltage Vosn b) A different FET is biased with Vosn=2V and VSBn-OV, and the current is measured as 440 μA. Find the gate source voltage VGsn, if the aspect ratio is known to be 8. 8. Evaluate the output of the pass transistor, assume Vtn and Vtp as threshold voltage of nMOS and PMOS, respectively. Neglecting body effect. (a) (b) (C) VDD VDDI 2 GND Vo Vo VODI VDD VDD VDD ĀĀ VDD VDD I (d) VDO VO Vo 9. Evaluate the output of pass transistor, neglecting body effect. (a) (c) VDD AA Fu vo GND VDD GND VDD Vo (d) VDD A GND Vout GND VDD + GND Vo GND VDD 10. Suppose VDD=1.2 V and Vth=0.4V. Determine VouT in Figure below for the following input, neglect body effect. (a) Vin-OV, (b) Vin=0.6V, (c) Vin=0.9V, (d) Vin=1.2V. Vo 11. Sketch a transistor level schematic for a compound CMOS logic gates for each of the following function. i) Y=(ABC+D)' ii) Y=[(AB+C)D]' iii) Y=[AB+C(A+B)]' 12) Use transmission gate and NMOS Pass transistor to generate following function. i) Y=AB'+A'B ii) Y=A'B'+AB iii) Y=AB+BC+AC 13) Consider the design of a CMOS compound OAI gate computing F=[(A+B)C]' a) Sketch a transistor level schematic b) sketch a stick diagram c) estimate the area from the stick diagram d) layout your gate with a CAD tool unit sized transistors e) compare the layout size to the estimated area. 14) Consider the design of a CMOS compound OAI gate computing F=[(A+B)(C+D)]' a) Sketch a transistor level schematic b) sketch a stick diagram c) estimate the area from the stick diagram d) layout your gate with a CAD tool unit sized transistors e) compare the layout size to the estimated area.
Expert Answer:
Answer rating: 100% (QA)
Given n mos transistor tox 1001 V 07 B My con co L 1 B VgV... View the full answer
Related Book For
Analysis and Design of Analog Integrated Circuits
ISBN: 978-0470245996
5th edition
Authors: Paul R. Gray, ? Paul J. Hurst Stephen H. Lewis, ? Robert G. Meyer
Posted Date:
Students also viewed these physics questions
-
Consider an NMOS transistor with W = 2 µm, L= 0.5 µm, k =194 µA/V 2 , λ = 0, V t0 = 0.6V, and ° c = 1.5 à 10 6 V/m. Compare the drain current predicted by...
-
Consider an NMOS transistor with the gate connected to a voltage source, its source connected to ground, bulk also connected to ground and the drain connected a variable voltage source. The NMOS...
-
1. Consider an nMOS transistor in a 0.6 m process with W/L= 1.2/0.6 (m/m). In this process the gate oxide thickness is 100 and the mobility of electrons is 350 cm/V-s. The threshold voltage is 0.7...
-
You have just been given a $454,000, which you decide to invest at an APR of 6.7 percent. If you were to withdraw $38,500 at the end of each year, starting at the end of this year, how many years...
-
The more the Fed accommodates shocks to money demand, the larger the (government) spending multiplier.
-
If the company wants to complete the project in 40 weeks, which activities should be crashed? Calculate the additional cost incurred to complete the project in 40 weeks.
-
Research the California Code of Civil Procedure Section 86, and list five types of cases that limited civil courts in California can hear. Your research can be completed by examining the California...
-
The net income (after income tax) of McCants Inc. was $2 per common share in the latest year and $6 per common share for the preceding year. At the beginning of the latest year, the number of shares...
-
Find bearing forces, draw shear force, normal force and moment diagrams and look at characteristic values for the beam
-
You designed the new database for City Jail. Now you need to create all the tables for the database. First, create all the tables using the information outlined in Section A. Second, make the...
-
You are undertaking the audit of a medium-sized company which has been operating since 1997 and specialises in the sale of jewellery from local designers. The balance date for the company is 30 th...
-
1. As an Austrian-Thai company, Red Bull has done a remarkable job of positioning itself internationally by coming across as a local company in every country where Red Bull is sold. Would you be more...
-
Greeny Company is an eco - friendly manufacturing company. It provided the following information regarding its first year of operations: Administrative salaries $ 9 4 , 7 2 0 Factory depreciation $ 2...
-
Find inverse Fourier transform of: X(jw)= (3 jw + jw)
-
A billing efficiency report allows for careful monitoring of follow - up bills; that is , whether they were paid, if the insurance has paid, and an assessment of the patient s responsibility for...
-
2. Write a Python program that plots the following two functions in one graph for x betwee and 2 with 100 samples. yl = 2.5x - 2 y2=x^4-6
-
Mike, who is 67 years of age, is employed as a judge, and his terms of employment includes guaranteed employment till he is 70 years of age. A major law firm (Law Partners) approaches him and as an...
-
The activities listed in lines 2125 serve primarily as examples of A) Underappreciated dangers B) Intolerable risks C) Medical priorities D) Policy failures
-
For the circuit in Fig. 5.34, assume that the input voltage V i is high enough that M 1 operates in the active region but M 2 is cut off. Using the same assumptions as in the derivation of (5.116),...
-
For the BiCMOS circuit of Fig. 3.78, use the zero-value time-constant method to estimate the first and second most dominant poles of the circuit. Assume an input voltage drive. Use bipolar transistor...
-
Calculate the output resistance of the circuit of Fig. 4.9, assuming that I IN =100 A and the devices have drawn dimensions of 100 m/1 m. Use the process parameters given in Table 2.4, and assume for...
-
Researchers collected a simple random sample of 36 children who had been identified as gifted in a large city. The following histograms show the distributions of the IQ scores of mothers and fathers...
-
It is hypothesized that the blue-green color of the eggshells of many avian species represents an informational signal as to the health of the female that laid the eggs. To investigate this...
-
A diamond's price is determined by various measures of quality, including carat weight. The price of diamonds increases as carat weight increases. While the difference between the size of a 0.99...
Study smarter with the SolutionInn App