Sub threshold, Electrical Engineering

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

Posted Date: 1/11/2013 1:25:35 AM | Location : United States







Related Discussions:- Sub threshold, Assignment Help, Ask Question on Sub threshold, Get Answer, Expert's Help, Sub threshold Discussions

Write discussion on Sub threshold
Your posts are moderated
Related Questions
why we are going to realization of digital filter after finding the H(z).

Q. what is frequency synthesized signal generator? Describe its circuit in detail. OR Give the circuit details of frequency synthesizer also explain its working. OR

Explain in brief steps to develop a Microprocessor based computer system. The design of a microcomputer system should begin with the CPU module. It modules establishes the fund

Q. Explain about Direct-current machines? Generally speaking, conventional dc generators are becoming obsolete and increasingly often are being replaced by solid-state rectifie

Q. Explain Continuous-data and discrete-data systems? A continuous-data system is one in which the signals at various parts of the systemare all functions of the continuous-tim

Give the alternate functions for the port pins of port3? RD - Read data control output. WR - Write data control output. T1 - Timer / Counter1 external input or test pin.

cpopy 16 bit data  Register pair Example  : Copy  16 bit  data 3 E 21H  in register pair BC Solution   :The  statement  is LXI B 3E 21H 16  bit data  3E 21H in reg

Q. Draw and explain a differential circuit A differentiator is a high pass RC circuit having a very small time constant. It is a circuit which gives an output voltage proportio

Importance of Voltage Quality - KPI The voltage quality has a growing economic impact on the customer and the network operators. The costs related along with "lack of quality"

I need help designing a BJT amplifier with that meets the following parameters: voltage gain greater than 300, Ic(Vce=0)=2uA, Vcc=20V.