A slew rate enhancement circuit is disclosed for increasing a slew rate in
a two stage CMOS amplifier. The slew rate enhancement circuit detects an
input signal transition in the two stage CMOS amplifier. Depending on the
polarity of the input signal transition the slew rate enhancement circuit
turns on either (1) a first current source to charge a first compensation
capacitor, or (2) a second current source to charge a second compensation
capacitor. The slew rate enhancement circuit increases the slew rate by a
factor of four to five and decreases the settling time of a voltage
transition by a factor of three.