Hello I am quite new to the Opamp business, so bare with me.
1 I am getting a -10 to 10V signal over a BNC connector 50 ohm.
2 Then I would like to use a voltage follower followed by a voltage divider to reduce the signal to -1.5 to 1.5V.
so far so good.
3 After this I would like to offset the voltage signal with a Reference of 1.5V.
I have read that using a voltage divider and a inverting opamp causes a new thevenin voltage that reduces my amplification. would it be advisable to use another Voltage follower to prevent this? just to seperate the gain and the offset circuit?
for Opamps I would like to use the AD711
You could use a restive divider to get down to +/-1.5V, go into one side of an InAmp, such as the
AD8422 with a gain of one running on +/-5V, and then put 1.5V on the REF pin.
If you want to continue w/ an op amp solution, the AD711 is verrrrrrry oooooold, so I would
look at the ADA4177-1.