The maximum power dissipation of the LF351N is 670mW, which is calculated based on the maximum junction temperature (Tj) of 150°C and the thermal resistance (Rthja) of 125°C/W.
To ensure stability in a unity-gain configuration, it's recommended to add a capacitor (typically 10-100pF) between the output and the inverting input to prevent oscillations.
The recommended operating voltage range for the LF351N is ±2V to ±18V, although the absolute maximum rating is ±22V. Operating outside the recommended range may affect the op-amp's performance and reliability.
While the LF351N can be used as a comparator, it's not the most suitable choice due to its relatively slow slew rate (0.5V/μs) and limited bandwidth (4MHz). A dedicated comparator like the LM339 or LM2901 would be a better option.
To minimize noise and oscillations, use a well-regulated power supply, decouple the power pins with capacitors (e.g., 10μF and 100nF), and keep the layout clean and compact. Additionally, consider adding a noise-reducing capacitor (e.g., 10pF) between the output and the inverting input.
LF351N datasheet
by STMicroelectronics
