Is body effect an advantage or disadvantage?

[mujju433]

Having body effect is an advantage or disadvantage?
I think that it is advantage as well as disadvantage bcoz wen we consider the three series nmos transistors then bcoz of body effect that is Vsb =0 for the last transistor so the effect is les i mean the input can reach faster than the other two ttransistor bcoz there the threshold voltages are getting added right??

So my question is when the threshold voltages are getting added it means that threshold voltage is increasing so when threshold voltage is increasing thn this shud also be an advantage but y it is disadvantage when threshold voltages are getting added bcoz when threshold is increasing means the leakage is getting reduced am i right????????????????????????

 

[Sadegh.j]

Re: Body effect

Body effect is a physical phenomenon. An advantage or disadvantage? Well depends on the design, may be some one uses it to achieve the desired behavior, and if neglected, the circuit will not work properly.

 

[pbs681]

Re: Body effect

Having body effect is an advantage or disadvantage?
I think that it is advantage as well as disadvantage bcoz wen we consider the three series nmos transistors then bcoz of body effect that is Vsb =0 for the last transistor so the effect is les i mean the input can reach faster than the other two ttransistor bcoz there the threshold voltages are getting added right??

So my question is when the threshold voltages are getting added it means that threshold voltage is increasing so when threshold voltage is increasing thn this shud also be an advantage but y it is disadvantage when threshold voltages are getting added bcoz when threshold is increasing means the leakage is getting reduced am i right????????????????????????

you r right if you considering leakage current.... but, let's consider this situation, when vbs != 0, the Ids will be decreased.... so, in order to get the desired current, you have to inrease the W/L ratio which translate to bigger area, thus higher cost.....