Capacitances in NAND2 depletion mode nmos logic

In summary, depletion mode NMOS logic is a type of logic circuit that uses depletion mode NMOS transistors, which require a negative gate voltage to turn off. A NAND2 depletion mode NMOS logic circuit is a specific type that uses two depletion mode NMOS transistors in a NAND gate configuration. In this type of logic, capacitance refers to the amount of charge stored on the gates of the transistors and can affect the speed and power consumption of the circuit. To minimize capacitance, smaller gates and optimized circuit layout can be used.
  • #1
reddvoid
119
1
Why we are not writing Cgs Cdb in depletion mode nmos here
why no Csb in bottom nmos
Can somebody please explain how to write which components of Cload or provide some links from where i can understand it better
?temp_hash=b7db7cc13cc7a15ef535142fbb7807fc.jpg
?temp_hash=b7db7cc13cc7a15ef535142fbb7807fc.jpg

thank you,
this picture is from http://books.google.co.in/books?id=XUruXhP2s6gC&lpg=PP1&pg=PA285#v=onepage&q&f=false
 

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  • #2
There is so CsbB because the body is shorted to the source of the bottom transistor (in this circuit the substrate is connected to ground).
 

Related to Capacitances in NAND2 depletion mode nmos logic

What is depletion mode NMOS logic?

Depletion mode NMOS logic is a type of logic circuit that uses depletion mode NMOS transistors, which have been designed to operate in the depletion mode. This mode of operation allows for a more efficient use of the transistor, but also requires a negative gate voltage to turn it off.

What is a NAND2 depletion mode NMOS logic circuit?

A NAND2 depletion mode NMOS logic circuit is a specific type of depletion mode NMOS logic circuit that uses two depletion mode NMOS transistors in a NAND gate configuration. This circuit is commonly used in digital logic circuits to perform the NAND function.

What is capacitance in relation to NAND2 depletion mode NMOS logic?

In NAND2 depletion mode NMOS logic, capacitance refers to the amount of charge that can be stored on the gates of the depletion mode NMOS transistors. This capacitance affects the speed and power consumption of the circuit, and must be carefully managed for optimal performance.

How does capacitance affect the performance of NAND2 depletion mode NMOS logic?

The capacitance in NAND2 depletion mode NMOS logic can affect the performance in two main ways. First, it can slow down the switching speed of the circuit, as it takes time for the charge to build up or dissipate on the gates. Second, it can increase the power consumption of the circuit, as the capacitive charge must be constantly replenished.

How can the capacitance in NAND2 depletion mode NMOS logic be minimized?

To minimize the capacitance in NAND2 depletion mode NMOS logic, the transistors should be designed with smaller gates and shorter channels. Additionally, the circuit layout should be optimized to reduce the parasitic capacitance between transistors. This can help improve the speed and efficiency of the logic circuit.

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