Hi Anston,
Thank you very much for the schematic. It is exactly what I was looking for. I'm really looking forward to try it out. However, I would be very happy if you or one of your colleagues could review my pcb layout once I have finished it. Can I replace the polymer capacitors by ceramic or low ESR tantalum capacitors? A high long term reliability is important in my application and I think that ceramic and tantalum have a higher lifetime than polymer capacitors have. Please correct me if this is wrong. Can I use the schematic also for +5V -> -5V? Is there any modification beside the gain resistor of the Opamp necessary?
Maybe one final question concerning the LM22670: Can I use 100nF (0603 or 0402) for the boot-capacitor instead of 10nF?
Best regards,
Christian