a kind of differential amplifier with additional input buffer stages. The addition of input buffer stages makes it easy to match (impedance matching) the amplifier with the preceding stage.
Output: 0 - 5V.
For deferential input of [-30mV, +30mV], use 100Ohm resistor.
For deferential input of [-300mV, +300mV], use 2.34kOhm resistor.
