I am designing a circuit which means getting sinusoidal signal as as Input and pass it to an ADC. Since the ADC supports tensions from 0V to 5V and my input 5Vpp, then I need to escalate it properly (to 2.5Vpp)then shift it 2.5V
The first AmpOp (IC1A) is to isolate the input from the circuit from the protection zeners. The second AmpOp (IC1D) is to escalate it to 2.5Vpp. The third AmpOp (IC1B) is to sum the input with 2.5V provided by the tension divider.
Which leads me to concern about (R5 series R6)//(R9 series R8) unintentionally; Problem solved adding a forth (IC1C) AmpOp between them.
But I got concerned about how the slew rate would be affected by associating so many AmpOps. I mean, my idea is to run it with ideally 1Mhz, and my SR is 2.9V/us. Any ideas?
(Actually I tried to reconsider each one of this ampOps, so things stay stable. The first one I could substitute by a really big resistor, and the second one for a tension divider, it'd be better maybe?)
I appreciate any thought about it