The gain of the INA146 is set by using two external resistors, R_G1 and R_G2, according to the equation:

G = 0.1 × (1 + R_G2/R_G1)

For a total gain of 0.1, A2 is connected as a buffer amplifier with no R_G1. A feedback resistor, R_G2 = 10 kΩ, must be used in the buffer connection. This provides bias current cancellation (in combination with internal R₅) to assure specified offset voltage performance. Commonly used values are shown in the table of Figure 6-1. Resistor values for other gains must be chosen to provide a 10-kΩ parallel resistance.