I am using in a project TL081 operational amplifiers and an INA118P instrumentation amplifier. Both need a ± 15 V Symmetric Power Supply, however I have seen some projects in which it uses single supply.
I intend to build a portable system that sends electrical signals to the body (sinusoidal voltage of 2 V pp with 100 kHz to 1 mA). And for this I will use the op amps TL081 to make a high pass filter, a current source and a voltage follower. With the INA118P I will amplify the signal.
I'm going to use arduino, I intend to use a single 5 V supply and GND. What's the difference between a Symmetric Power Supply and Single Supply?
The TL081 does not have much information about Single Supply Operation. For the voltage that I intend to work, is 5 V enough?