Hi Darwin:
Thanks very much for your reply. After reading the article you provided, I summarized it as follows:
1, large resistors are needed to increase the power efficiency;
2, large feedback resistors affect the output-voltage accuracy;
3, more noise are generated by resistors and coupled into the device;
4, with the same feed forward capacitor, smaller resistors may lead the system into unstable.
I am using power supply to power my PCB so the efficiency is not a big concern while I want to keep a low noise level for the whole PCB. I have attached my design using two devices. The input voltage is +/- 10V and the desired output voltage is +/- 5V. The feed forward capacitor is 10 nF. Could you please check if the system is stable for the values of resistors as shown below?
Thank you very much!
Ruo