Hi,
I have designed a single input single output  amplifier for low power applications. It has dynamic biasing and has two phases: biasing phase and amplifying phase and has clocks. I want to measure the slew rate, settling time, input reffered noise, input comon mode range, output common range, offset. How can i measure them systematically.

For slew rate measurement, i know that opamp is configured as voltage follower and then step input is given. What should i do in case single input single output case?

Should i use any feedback?

Yes the bias current changes and more important is that the amplifier has a biasing phase where it is switched to biasing circuitry and gets biased. During amplifying phase input is applied and biasing circuit is cut off. There are capacitors to keep it biased.