INA126E/250G4 datasheet by Texas Instruments

INA126E/250G4 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the INA126E/250G4?
  Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the input and output traces as short as possible. Additionally, it's recommended to use a common-mode filter capacitor between the input pins and the ground plane to reduce noise.
• How do I ensure accurate gain setting with the INA126E/250G4?
  To ensure accurate gain setting, it's recommended to use a 1% or better tolerance resistor for the gain-setting resistors (Rg and Rf). Additionally, the gain-setting resistors should be placed close to the INA126E/250G4 to minimize parasitic capacitance and inductance.
• What is the maximum input voltage that the INA126E/250G4 can handle?
  The INA126E/250G4 can handle input voltages up to ±40V, but it's recommended to limit the input voltage to ±20V to ensure optimal performance and to prevent damage to the device.
• How do I reduce noise and EMI in my INA126E/250G4 circuit?
  To reduce noise and EMI, it's recommended to use a shielded enclosure, keep the input and output cables as short as possible, and use twisted-pair cables for the input and output signals. Additionally, a common-mode filter capacitor can be used to reduce noise and EMI.
• What is the recommended power supply decoupling for the INA126E/250G4?
  Texas Instruments recommends using a 10uF ceramic capacitor in parallel with a 1uF ceramic capacitor for power supply decoupling. The capacitors should be placed as close to the device as possible to reduce parasitic inductance.