The maximum power dissipation of the LF347DR is 670mW, which is calculated based on the maximum junction temperature (TJ) of 150°C and the thermal resistance (θJA) of 125°C/W.
While the LF347DR is an op-amp, it can be used as a comparator in certain applications. However, it's not recommended as it's not optimized for comparator applications and may not provide the best performance. TI recommends using a dedicated comparator like the LM339 or LM2901 for comparator applications.
To minimize noise and oscillations, keep the input and output traces short and away from each other, use a solid ground plane, and decouple the power supply with capacitors. Also, consider using a ferrite bead or a resistor in series with the output to reduce oscillations.
A 0.1uF ceramic capacitor is a good starting point for decoupling the power supply of the LF347DR. However, the optimal value may vary depending on the specific application and PCB layout.
The LF347DR is rated for operation up to 125°C, but its performance may degrade at high temperatures. If you need to operate the device in a high-temperature environment, consider using a more temperature-stable op-amp like the OPA277 or OPA827.
LF347DR datasheet
by Texas Instruments
