MC3487DR datasheet by Texas Instruments

MC3487DR Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for the MC3487DR?
  The MC3487DR can operate from -40°C to 125°C, but the recommended operating temperature range is -20°C to 85°C for optimal performance.
• How do I ensure the MC3487DR is properly powered?
  The MC3487DR requires a 5V ±10% power supply, and it's essential to decouple the power pins with 0.1 μF and 10 μF capacitors to minimize noise and ensure stable operation.
• What is the purpose of the internal voltage regulator, and how does it affect the device's operation?
  The internal voltage regulator generates a 3.3V supply for the internal circuitry. It helps to reduce power consumption and noise, but it's essential to ensure the input voltage is within the recommended range to maintain regulator stability.
• How do I configure the MC3487DR for low-power operation?
  To minimize power consumption, set the device in low-power mode by pulling the SHDN pin low. This reduces the quiescent current to approximately 10 μA. Additionally, consider using the power-down mode to further reduce power consumption.
• What are the key considerations for PCB layout and design when using the MC3487DR?
  To ensure optimal performance, keep the analog and digital grounds separate, use a solid ground plane, and minimize trace lengths and widths to reduce noise and electromagnetic interference (EMI).