INA122P datasheet by Texas Instruments

INA122P Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the INA122P can handle?
  The INA122P can handle input voltages up to ±40V, but it's recommended to keep the input voltage within ±20V for optimal performance and to prevent damage to the device.
• How do I ensure accurate gain settings on the INA122P?
  To ensure accurate gain settings, use a 1% or better tolerance resistor for the gain-setting resistors (Rg) and make sure they are matched to within 0.1% of each other. Also, keep the gain-setting resistors close to the INA122P to minimize parasitic capacitance and inductance.
• What is the recommended layout and placement for the INA122P?
  For optimal performance, place the INA122P close to the signal source, and keep the input traces as short as possible. Use a ground plane under the device to reduce noise and electromagnetic interference (EMI). Also, keep the power supply decoupling capacitors close to the device.
• How do I filter out noise and EMI in my INA122P circuit?
  Use a low-pass filter (LPF) or a band-pass filter (BPF) at the input stage to filter out high-frequency noise and EMI. You can also use shielding, grounding, and decoupling capacitors to reduce noise and EMI.
• What is the maximum output current that the INA122P can drive?
  The INA122P can drive up to 10mA of output current, but it's recommended to keep the output current below 5mA for optimal performance and to prevent overheating.