INA126E/2K5 datasheet by Texas Instruments

INA126E/2K5 Frequently Asked Questions (FAQs)

• What is the maximum power supply voltage that can be applied to the INA126E/2K5?
  The maximum power supply voltage that can be applied to the INA126E/2K5 is 36V. Exceeding this voltage can cause damage to the device.
• How do I ensure the accuracy of the INA126E/2K5 in high-temperature applications?
  To ensure accuracy in high-temperature applications, it is recommended to use a thermocouple or thermistor to measure the temperature and compensate for the temperature drift of the INA126E/2K5. Additionally, the device should be operated within its specified temperature range of -40°C to 125°C.
• What is the recommended layout and grounding technique for the INA126E/2K5 to minimize noise and electromagnetic interference (EMI)?
  To minimize noise and EMI, it is recommended to use a multi-layer printed circuit board (PCB) with a solid ground plane, and to keep the analog and digital grounds separate. The INA126E/2K5 should be placed close to the analog-to-digital converter (ADC) and the power supply, and the input and output traces should be kept short and shielded.
• Can the INA126E/2K5 be used in a single-supply configuration?
  Yes, the INA126E/2K5 can be used in a single-supply configuration. However, the input common-mode voltage range is limited to 2.5V to 36V, and the output voltage swing is reduced. It is recommended to use a voltage divider or an op-amp to level-shift the input signal to ensure that it is within the input common-mode voltage range.
• How do I calculate the gain error and offset voltage of the INA126E/2K5?
  The gain error and offset voltage of the INA126E/2K5 can be calculated using the formulas provided in the datasheet. The gain error is typically ±0.05% and the offset voltage is typically ±0.5mV. These values can be trimmed to zero using external resistors and potentiometers.