LM148JB datasheet by Texas Instruments

LM148JB Frequently Asked Questions (FAQs)

• What is the maximum power dissipation of the LM148JB?
  The maximum power dissipation of the LM148JB is 670mW, which is calculated based on the maximum junction temperature (Tj) of 150°C and the thermal resistance (RθJA) of 125°C/W.
• Can I use the LM148JB as a comparator?
  While the LM148JB is an op-amp, it can be used as a comparator in a pinch. However, it's not the best choice due to its relatively slow slew rate (0.5V/μs) and limited bandwidth (1MHz). A dedicated comparator like the LM339 would be a better choice.
• How do I ensure stability when using the LM148JB in a feedback loop?
  To ensure stability, make sure to follow proper compensation techniques, such as adding a capacitor in the feedback loop to reduce the gain at high frequencies. Additionally, ensure that the op-amp is not operated at a gain greater than 10, and that the feedback resistors are properly matched.
• What is the input impedance of the LM148JB?
  The input impedance of the LM148JB is typically around 2MΩ, which is relatively high. This makes it suitable for use in high-impedance applications, such as audio circuits.
• Can I use the LM148JB in a single-supply configuration?
  Yes, the LM148JB can be used in a single-supply configuration. However, the input common-mode voltage range is limited to within 2V of the positive supply rail. Ensure that the input signals are properly biased to stay within this range.