11.1 Layout Guidelines
Comparators are very sensitive to input noise. For best results, maintain the following layout guidelines:
- Use a printed circuit board (PCB) with a good, unbroken low-inductance ground plane. Proper grounding (use of ground plane) helps maintain specified performance of the TLV1805 family of devices.
- To minimize supply noise, place a decoupling capacitor (0.1-μF ceramic, surface-mount capacitor) as close as possible to VS as shown in Figure 73.
- On the inputs and the output, keep lead lengths as short as possible to avoid unwanted parasitic feedback around the comparator. Keep inputs away from the output.
- Solder the device directly to the PCB rather than using a socket.
- Run the ground pin ground trace under the device up to the bypass capacitor, shielding the inputs from the outputs.