CMOS transistor pair mismatch

[invent]

kinget mismatch

I have been studying through simulations the effects of transistor pair mismatch for op-amps and comparators. Books that i have come across so far have only mention about effects about mismatch on the differential pair. How can I get more information on the effects of mismatching other transistor pairs?

 

[nassim_el85]

Hi

I really can't underestand what you mean of other transistors pair. what is your application?

 

[invent]

Sorry for not being clear. The transistor pair I am refering to are any pair or transistors in the op-amp which are equal size. For example current source. Hope you can help.

 

[hr_rezaee]

Hi
I think the main effects of mismatch can be seen on the differential pairs.
regards

 

[wenadinho]

each mismatch in opamp (differential pair, current mirror) will create an offset referred to the input (or output) of the amplifier after the chip has been fabricated.

 

[pit1000]

There can be this paper will useful.

Peter R. Kinget - Device Mismatch and Tradeoffs in the Design of Analog Circuits
IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 40, NO. 6, JUNE 2005

h**p://www.cparity.com/jpdfs/ieee/ssc/jssc/2005040/06jun/1212king.pdf