Hi there,
I just built up a two-stage operational amplifier circuit using 0.18 um CMOS process in LTspice. When making an AC analysis, I was expecting that the output gain would decrease as the frequency increases, but instead, the gain increases with frequency.
You can see the image of the circuit and bode plot here: http://imgur.com/RlHr1FX
The 0.18 um CMOS library file is here: http://www.ee.iitm.ac.in/~nagendra/cadinfo/tsmc018.lib
Am I doing something wrong?
Thanks!
I just built up a two-stage operational amplifier circuit using 0.18 um CMOS process in LTspice. When making an AC analysis, I was expecting that the output gain would decrease as the frequency increases, but instead, the gain increases with frequency.
You can see the image of the circuit and bode plot here: http://imgur.com/RlHr1FX
The 0.18 um CMOS library file is here: http://www.ee.iitm.ac.in/~nagendra/cadinfo/tsmc018.lib
Am I doing something wrong?
Thanks!