Sub threshold, Electrical Engineering

Assignment Help:

Sub Threshold

The sub threshold I-V curve depends exponentially on the threshold voltage, introducing a strong reliance on any manufacturing variation that influences threshold voltage; for instance: differences in oxide thickness, junction depth/body doping which change the degree of drain-induced barrier lowering. The resultant sensitivity to fabricational variations complicates optimization for leakage and performance.

1618_sub threshold 1.png

Figure: MOSFET drain current vs. drain-to-source voltage for various values of VGS - Vth; the boundary in between linear (Ohmic) and saturation (active) modes is pointed out by the upward curving parabola.

 

2100_sub threshold 2.png

Figure: Cross section of a MOSFET that is operating in the linear (Ohmic) region; strong inversion region exist even near drain

 

939_sub threshold 3.png

Figure: Cross section of a MOSFET operating in the saturation (active) region; channel shows pinch-off near drain


Related Discussions:- Sub threshold

Find the forced component of the current, Q. Consider an RC parallel circui...

Q. Consider an RC parallel circuit excited by (a) i(t) = 20e -2t A, and (b) i(t) = 20 A. Find the forced component of the current through the capacitor for R = 2  and C = 2F.

Various characterstics of a dc shunt generator. , Q.   Draw the various cha...

Q.   Draw the various characterstics of a DC shunt generator and explain critical resistance.   Sol.  Following are three most important characterstics or curves of a d.

Sketch the depletion mosfet drain characteristics, Q. Sketch the depletion ...

Q. Sketch the depletion MOSFET drain characteristics The depletion-type MOSFET has a structure similar to that of the enhancement-type MOSFET with one important difference: The

What is the desirable properties of an insulation material, What is the des...

What is the desirable properties of an insulation material? Insulation materials have the desirable properties are as follows: 1. Very fine dielectric strength such as of mi

For the low-pass filter configuration calculate cf, Q. For the low-pass fil...

Q. For the low-pass filter configuration of Figure, with R i = R f = 1M, calculate C f such that the 3-dB point is at 1 kHz.

Node-voltage method to find the current, Q. Use the node-voltage method to ...

Q. Use the node-voltage method to find the current I through the 5- resistor of the circuit of Figure.

Clipper and clamper circuit, Clipper Circuits: Clipper circuit have ab...

Clipper Circuits: Clipper circuit have ability to Clipper of portions of the input signals without distorting the remaining part of the alternating wave form. Clamper net

Central energy conservation fund, Central Energy Conservation Fund Thi...

Central Energy Conservation Fund This fund is to be set up at the Centre to develop the delivery mechanism for large-scale adoption of energy efficiency services like as perfo

Electricity hazards in the laboratory, ELECTRICITY HAZARDS IN THE LABOR...

ELECTRICITY HAZARDS IN THE LABORATORY : You've probably read about, or heard of, people falling onto high voltage rails or cables and surviving thousands of volts. As a contra

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd