uranyumx
Advanced Member level 4
Hi,
I have a voltage-to-current converter and try to add a DC offset voltage to voltage on the load at the output of the converter. The supply voltage of the opamp +/-5V and there is a 2kOhm load for verification of the converter output. The conversion output is matching with my calculation (Iout=Vin/25k). The problem is that offset voltage which is not added to the voltage on the load. I expect to measure a positive shifted signal from the buffer output. I have attached my design and measurement with the attached file.
Note: I placed the 4MOhm resistor to not lose the current output of the converter.
Thank you,
I have a voltage-to-current converter and try to add a DC offset voltage to voltage on the load at the output of the converter. The supply voltage of the opamp +/-5V and there is a 2kOhm load for verification of the converter output. The conversion output is matching with my calculation (Iout=Vin/25k). The problem is that offset voltage which is not added to the voltage on the load. I expect to measure a positive shifted signal from the buffer output. I have attached my design and measurement with the attached file.
Note: I placed the 4MOhm resistor to not lose the current output of the converter.
Thank you,