akbarza
Full Member level 2
hi
I've read somewhere that for measurement of slew-rate of an op-amp with simulation, we place the op-amp in negative feedback structure and for a square wave as input signal, the transient slope from 10% to 90% of output is regarded as slew-rate.
question 1: considering a supply voltage as VDD, and considering that the input swing and output swing of op-amp are different and considering that slew-rate is a small quantity,in below picture how must we determine the amplitude of VPULSE, namely whats it's value and from which value to which value?
question 2: in a two stage amplifier as below picture, with considering slew-rate definition namely slew-rate=I/C , how can we use this to calculate slew rate and how is calculated nagative and positive slew-rate?
thanks.
I've read somewhere that for measurement of slew-rate of an op-amp with simulation, we place the op-amp in negative feedback structure and for a square wave as input signal, the transient slope from 10% to 90% of output is regarded as slew-rate.
question 1: considering a supply voltage as VDD, and considering that the input swing and output swing of op-amp are different and considering that slew-rate is a small quantity,in below picture how must we determine the amplitude of VPULSE, namely whats it's value and from which value to which value?
question 2: in a two stage amplifier as below picture, with considering slew-rate definition namely slew-rate=I/C , how can we use this to calculate slew rate and how is calculated nagative and positive slew-rate?
thanks.