OPA381AIDRBRG4 datasheet by Texas Instruments

OPA381AIDRBRG4 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of OPA381AIDRBRG4?
  Texas Instruments recommends a layout that minimizes parasitic inductance and capacitance, with a solid ground plane and short traces. A 4-layer PCB with a dedicated analog ground plane is recommended. See the TI application note 'AN-202' for more details.
• How do I ensure stability when using OPA381AIDRBRG4 in a high-gain configuration?
  To ensure stability, use a compensation capacitor (Cc) between the output and the inverting input. The value of Cc depends on the gain and bandwidth requirements. A good starting point is 10pF to 100pF. Additionally, ensure that the feedback resistors are matched and have a low tolerance.
• What is the maximum power dissipation of OPA381AIDRBRG4?
  The maximum power dissipation of OPA381AIDRBRG4 is 1.4W. However, this can be limited by the thermal resistance of the package and the PCB. Ensure that the device is properly heat-sinked and the PCB is designed to dissipate heat efficiently.
• Can I use OPA381AIDRBRG4 in a single-supply configuration?
  Yes, OPA381AIDRBRG4 can be used in a single-supply configuration. However, the input common-mode range is limited to VCC-1.5V to VCC+0.5V. Ensure that the input signal is within this range to maintain optimal performance.
• How do I protect OPA381AIDRBRG4 from ESD damage?
  Use ESD protection devices such as TVS diodes or ESD arrays at the input and output pins. Additionally, follow proper handling and storage procedures to prevent ESD damage. See the TI application note 'AN-146' for more details.