Hello Ioannis and Alain,

Thanks for your replies - exactly what I was after. I was having one of those days where I couldn't think straight and I was overlooking the obvious solution.

BTW - I have had success using the TS951/952/954 series of RRIO op-amps. The data sheet states "latch-up immunity", so they may be a suitable device in your application Ioannis. I haven't experienced any problems with them. Pricing and specs are are similar to LMC660.

Regards,

Andy