A good PCB layout for OPA360 involves keeping the input and output traces short and symmetrical, using a solid ground plane, and placing decoupling capacitors close to the device. A 4-layer PCB with a dedicated analog ground plane is recommended.
The choice of gain resistors depends on the desired gain, bandwidth, and noise requirements. A good starting point is to use the gain resistor calculator tool provided by Texas Instruments or to consult the application notes for guidance.
The maximum power dissipation of OPA360 is 750mW. However, this can be limited by the thermal resistance of the package and the PCB. It's essential to ensure proper thermal management to prevent overheating.
While OPA360 can be used as a comparator, it's not the most suitable device for this application. The OPA360 is an op-amp optimized for high-speed and low-noise applications, and its output stage is not designed for high-current drive. A dedicated comparator like the TLV7031 would be a better choice.
To filter out noise and interference, use a combination of passive and active filtering techniques. Add bypass capacitors to the power supply lines, use a low-pass filter at the input, and consider adding a noise filter like a ferrite bead or a common-mode choke.
OPA360AIDCKT datasheet
by Texas Instruments
