OTA full swing features

[maky86]

Hello everybody!
I'm new to filter design and i've to study the feature of this OTA (the amplifier attached). I would like to ask you how can I understand:
- how many stages has the amplifier;
- what configuration of OTA is(cascode,folded cascode...);
- what feature this amplifier has to have to be considered full swing.

I know these are very general questions and if you don't want to completely answer me, please give me only an hint.

 

[maky86]

Can anybody help me?

 

[Audioguru]

Your schematic drawing software makes a negative image instead of a normal positive image. The schematic is covered in dots.
The parts are so far apart that they are too small to see.
The text is also too small to see and it blocks parts of the schematic.
We cannot see if the Mosfets are N-channel or P-channel and we cannot see their drains and sources. Google shows many symbols for Mosfets but none look like yours.

When you say "full swing" do you mean "rail-to-rail"? Cmos opamps are rail-to-rail because they use push-pull complementary common source Mosfets.

 

[maky86]

Thak you for the reply. I haven't a better drawing, but the answer you gave me is sufficient.