ehsanaiman
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Hello,
Im doing schematic and simulation of opamp circuit using Synopsys Hspice 90nm technology, . For input, Im using 8mV, 500Hz as V+ input (AC 1V and 0 deg phase) and -8mV, 500Hz as V- input (AC 1V and 180 deg phase). So after transient, DC and AC simulation, the gain obtained is correct according to the value of Vpeaktopeak which is 55.1dB, but the shape of transient waveform is wrong (not in sinusoidal shape, refer the picture attached. What is the cause of that phenomenon?
I think that shape is not cause by signal clipping because the gain calculated from Vpp output and Vpp input equal to 55.1dB which is gain of that circuit.
I also attached the schematic diagram of opamp and feedback circuit for reference.
Thank you.
Im doing schematic and simulation of opamp circuit using Synopsys Hspice 90nm technology, . For input, Im using 8mV, 500Hz as V+ input (AC 1V and 0 deg phase) and -8mV, 500Hz as V- input (AC 1V and 180 deg phase). So after transient, DC and AC simulation, the gain obtained is correct according to the value of Vpeaktopeak which is 55.1dB, but the shape of transient waveform is wrong (not in sinusoidal shape, refer the picture attached. What is the cause of that phenomenon?
I think that shape is not cause by signal clipping because the gain calculated from Vpp output and Vpp input equal to 55.1dB which is gain of that circuit.
I also attached the schematic diagram of opamp and feedback circuit for reference.
Thank you.