INA220BQDGSRQ1 datasheet by Texas Instruments

INA220BQDGSRQ1 Frequently Asked Questions (FAQs)

• What is the maximum voltage that can be applied to the VIN pin?
  The maximum voltage that can be applied to the VIN pin is 36V, but it's recommended to keep it below 30V for reliable operation.
• How do I calculate the current sensing resistor value for my application?
  The current sensing resistor value can be calculated using the formula: RSENSE = (VFS/ISCALE) / (ICURRENT_MAX), where VFS is the full-scale voltage, ISCALE is the current scale, and ICURRENT_MAX is the maximum current to be measured.
• What is the purpose of the RST pin, and how do I use it?
  The RST pin is an active-low reset input that resets the INA220 to its power-on state. It can be used to reset the device in case of an error or to restart the conversion cycle. Connect the RST pin to a logic low signal to reset the device.
• How do I configure the INA220 for bidirectional current measurement?
  To configure the INA220 for bidirectional current measurement, connect the SENSE pin to the load, and the VIN pin to the power supply. Set the ISCALE bit in the configuration register to select the current scale. The INA220 will then measure both positive and negative currents.
• What is the purpose of the ALERT pin, and how do I use it?
  The ALERT pin is an open-drain output that indicates an overcurrent or undervoltage condition. It can be used to trigger an interrupt or to signal an error condition. Connect a pull-up resistor to the ALERT pin and monitor its state to detect errors.