need an Active Voltage divider for the circuit

[zhaoxhts]

Hello.
I'm trying to design a circuit using active voltage divider(with op amps) instead of a passive one, because i'm use the same channel for both CAN signal and Programming voltage, and the passive voltage is in this channel, and is somehow messing with CAN signal. i already fixed the problem for now, but still need an active solution. any help?

 

[KlausST]

Hi

Can you show us a schematic about your problem?
And a more detailed description. Feel free to use values like volts, amperes and ohms rather than a textual description.


Klaus

 

[chuckey]

Use a fixed series resistor followed by a selection of shunt resistors, each being switched in by a CMOS transmission gate t(4066). This sort of arrangement can deal with 0 to +15V signals with a impedances of say, 100 ohms to 1M ohm ay 10s of KHZ
Frank