Hello,
Our customer use the OPA188, have a question.
In the test condition of the open-loop voltage gain, RL=10kohm.
The customer using RL as less than 10kohm.
The customer using high gain too.
Do you have the data of the Open-loop voltage gain vs RL?
Best Regards,
Naoki Aoyama
Hello,
The OPA188 datasheet includes dc Aol specifications for both 10k and 5k loads. These measurements can be used to determine the dc value for the OPA188 open-loop output impedance, which can then be used to back-calculate the expected dc Aol for other resistive load values. I've copied an image of a math file that shows the calculations for the dc open-loop output impedance (Zo/Ro) and an example calculation for the expected Aol for a 499Ohm load.
