LM393MX datasheet by Texas Instruments

LM393MX Frequently Asked Questions (FAQs)

• What is the maximum voltage that can be applied to the input pins?
  The maximum voltage that can be applied to the input pins is 30V, but it's recommended to keep it below 15V to ensure proper operation.
• How do I ensure that the output is not oscillating when using the LM393MX as a comparator?
  To prevent oscillation, ensure that the input voltage difference is greater than the input offset voltage (typically 2mV), and add a small capacitor (e.g., 10nF) between the output and the inverting input to filter out high-frequency noise.
• Can I use the LM393MX as an amplifier?
  While the LM393MX can be used as a simple amplifier, it's not recommended due to its limited bandwidth (1.3MHz) and high open-loop gain (100dB). Instead, consider using a dedicated op-amp like the LM324 or OP07.
• What is the minimum input voltage required for the LM393MX to operate correctly?
  The minimum input voltage required for the LM393MX to operate correctly is 2V, but it's recommended to use a minimum of 4V to ensure proper operation and minimize input offset voltage.
• How do I reduce the power consumption of the LM393MX?
  To reduce power consumption, consider using a lower supply voltage (e.g., 5V instead of 12V), reducing the input voltage swing, or using a lower-power comparator like the TLC393.