The PCB layout design for the OPT4060 requires a couple of considerations. Bypass the power supply with a capacitor placed close to the device. Note that optically reflective surfaces of components also affect the performance of the design. Make sure to consider the three-dimensional geometry of all components and structures around the sensor to prevent unexpected results from secondary optical reflections. Placing capacitors and components at a distance of at least twice the height of the component is usually sufficient. The best optical layout is to place all close components on the opposite side of the PCB from the device. However, this approach is not practical for the constraints of every design.

An example PCB layout with the OPT4060 is shown in Figure 9-4.