Differential input and differential output amplifier circuit composed of INA102

As shown in the figure, it is a differential input and differential output amplifier circuit. In some applications, the signal source and output voltage are not allowed to be grounded. In this case, differential input and differential output should be used. This circuit can be composed of INA102 and INA105. The circuit shown in the figure is an amplifier circuit composed of two INA102s. It does not require external components. The voltage magnification of each INA102 is 100, but the phase is different (the voltage magnification is one positive and one negative). The total voltage magnification is 200, and the total output voltage is: Vo=200Vi.