ISO7221BDRG4 datasheet by Texas Instruments

ISO7221BDRG4 Frequently Asked Questions (FAQs)

• What is the maximum data rate that can be achieved with the ISO7221BDRG4?
  The maximum data rate is 100 Mbps, but it can be limited by the capacitance of the isolation barrier and the signal integrity of the system.
• How do I ensure reliable operation across the isolation barrier?
  To ensure reliable operation, follow the recommended layout and routing guidelines, use a low-ESR capacitor for the VCC1 and VCC2 pins, and ensure the input signals are within the recommended voltage range.
• What is the purpose of the EN pin, and how do I use it?
  The EN (Enable) pin is used to enable or disable the device. When EN is low, the device is in shutdown mode, and when EN is high, the device is enabled. Use the EN pin to control power consumption or to implement a reset function.
• How do I handle the power-up and power-down sequences for the ISO7221BDRG4?
  Follow the recommended power-up and power-down sequences to ensure proper operation. Power up VCC1 and VCC2 simultaneously, and power down VCC1 and VCC2 simultaneously to prevent latch-up.
• What are the key considerations for PCB layout and routing when using the ISO7221BDRG4?
  Keep the signal traces short and away from noise sources, use a solid ground plane, and ensure the isolation barrier is not compromised by the PCB layout.