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
what is the difference between statically and dynamically induced emf''s

Fermi Dirac level: Sol. The Fermi level is simply a reference energy level. It is the energy level at which the probability of finding an electron n energy unit above it in

The Three-phase alternator In this case, three separate sets of coils are wound on the stator and connected to produce three separate outputs. Because of the physical displace


Q. A table for the direct 3-bit binary decoding is given. Show a block diagram for a 3-to-8 decoder and suggest a method for its implementation.

Program counter holds the address of also the first byte of the next instruction to be fetched for implementation or the address of the next byte of a multi byte instruction, which

Voltage divider with AC bypasses capacitor: Figure: Voltage divider with capacitor The standard voltage divider circuit that is discussed above faces a drawback - A

A battery having of five cells in series. Each cell is 2.5V and internal resistance is 0.05 Ω. A battery is linked to the load resistance of 15Ω. Verify: i.  Total e.m.f

Disconnection of Supply: An Appellate Tribunal has been created over the Commissions for speedy dispute resolution. It is assumed to adjudicate appeals against orders of the a

The five stages of DLX pipeline is:- ? Operand location ? Number of explicit operands per instruction ? Operand storage in the CPU ? Operations ? Type and size of o