PMOS type diff amplifier

[Chethan]

Hi all
does any of u have any materials or links about PMOS input differential amplifier.

thanx in advance

 

[pthoppay]

You can search in the board.

If Iam not wrong there were many questions on advantages of PMOS as input for diff amp. That will a basic idea.

Prakash.

 

[Pleiku]

do you have to design the pmos type diff amp or you need to use one?

 

[Chethan]

Yes , I am supposed to design an PMOS input differential amplifier

 

[hr_rezaee]

there is many books in diffrential amp. that their amps are PMOS input.

 

[longstar]

First,Overall dc gain is largely unaffected by the choice since both designs have both NMOS and PMOS drivers.
Secand,For a given power dissipation(bias current),having a PMOS input-pair maximizes the slew rate since PMOS will have larger Veff
Third,Flicker noise is less ofr PMOS
and Input voltage range requirements.
from ken martin