Dear Steve,

I'd look at running a single rail system, and using an op-amp to generate a synthetic ground. Linear supplies in battery gear are to be avoided if possible. Your voltage requirements are determined by noise and dynamic range. Do you really need a 10V swing ?, or will 5 do ?

Thanks for your reply, Yes single supply would be easier to work with but the problem is the Integrator section. My incoming signal is ( Cosine super imposed onto exponential ) with peaks +35V to -35V. I need to integrate this signal. For this I am using split supply type opamp integrator method. I have seen deboo singal supply integrator but the performarmance is scary. Please help me how can I use a single Rail scheme with Integration operation. 10V swing is not really important.

Regards,
Prahlad Purohit