OPA188: OPA188 TINA simulation problem

TTG tt

Part Number: OPA188

Dear team,
I simulated this circuit diagram. The simulation result is wrong, I don't know where the problem lies. I attach the simulation file. Thank you!5238.OPA188_TEST1.TSC

over 3 years ago

0 kai klaas69 over 3 years ago

Guru 140200 points

Hi TTGtt,

you violate the common mode input voltage range of OPA188. Your input voltage must stay 1.5V below the positive supply voltage.

Kai

0 Raymond Zhang1 over 3 years ago

TI__Guru 55141 points

Hi TTG,

As Kai indicated, Vcm is outside of input voltage range, see the capture below. You have to increase Vcc or lower the input signal amplitude (remove C2 or place after R1, if this is intended).

Best,

Raymond

Amplifiers

Amplifiers forum

OPA188: OPA188 TINA simulation problem