10.1 Layout Guidelines

Figure 19 shows the basic connection of the INA1x8-Q1 in the TSSOP-8 package. Connect input pins V_IN+ and V_IN− as closely as possible to the shunt resistor to minimize any resistance in series with the shunt resistance. Output resistor R_L is shown connected between the OUT pin and ground. Best accuracy is achieved with the output voltage measured directly across R_L. Measuring directly across R_L is especially important in high-current systems where load current could flow in the ground connections and affect measurement accuracy.

No power-supply bypass capacitors are required for stability of the INA1x8-Q1. However, applications with noisy or high-impedance power supplies may require decoupling capacitors to reject power-supply noise. Connect bypass capacitors close to the device pins.