I am having trouble with understanding how to design circuits involving op amps.
I need to design a circuit using as less op amps as possible which has the following characteristics:
- high input impedance (greater than 100k)
- low output impedance (smaller than 100)
- can be adjusted with a single 47k potentiometer over the range 0 to -10
- gain should vary linearly with potentiometer rotation
I really don't understand how to complete this...