LF347D datasheet by Texas Instruments

LF347D Frequently Asked Questions (FAQs)

• What is the maximum power dissipation of the LF347D?
  The maximum power dissipation of the LF347D is 670mW, which is calculated based on the maximum junction temperature (150°C) and the thermal resistance (θJA) of the package.
• How do I ensure stability when using the LF347D in a high-gain configuration?
  To ensure stability, it's essential to follow proper layout and grounding techniques, use a low-ESR capacitor for decoupling, and consider adding a compensation capacitor (e.g., 10-100pF) between the output and the inverting input.
• What is the recommended input impedance for the LF347D?
  The recommended input impedance for the LF347D is between 1kΩ and 100kΩ. This range ensures optimal performance and minimizes the effects of input bias current.
• Can I use the LF347D as a comparator?
  While the LF347D can be used as a comparator, it's not the most suitable choice due to its relatively slow slew rate (13V/μs) and limited output current (±20mA). A dedicated comparator like the LM339 or LM2901 would be a better option.
• How do I protect the LF347D from overvoltage?
  To protect the LF347D from overvoltage, use a voltage clamp or a transient voltage suppressor (TVS) diode to limit the input voltage to the recommended maximum rating (±16.5V).