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Frequent questions

  • [FAQ] INA250: Where can I find the user's guide for the INA250EVM with just one A2 device?

    Other Parts Discussed in Thread: INA250EVM I have a version of the INA250EVM from TI that is different than the one shown on the product page. The board I have has a single INA250A2 unit installed on it. Is there a user's guide for this board?

  • [FAQ] INA210: What is the difference between the INA21xA, INA21xB, and INA21xC devices?

    Part Number: INA210 There are various INA21xA/B/C devices. Why are the trailing letters different?

  • [FAQ] INA199: What is the difference between the INA199A, INA199B and INA199C devices?

    Part Number: INA199 There are multiple versions of the INA199, ending with A#, B#, and C#. What is different between versions?

  • [FAQ] INA199: Some plots in the data sheet are noted as only for INA199A3. What about INA199A1 and INA199A2?

    Part Number: INA199 The INA199 data sheet says typical characteristic plots were measured with the INA199A3. Are curves for the INA199A1 and INA199A2 identical?

  • [FAQ] INA3221: Input Bias Current & Impedance Specs for Bus Voltage Monitors

    Part Number: INA3221 Other Parts Discussed in Thread: INA219 , INA231 , INA230 , INA226 , INA220 Some power monitors contain "input bias current || input impedance" specifications. How do these properties affect design and implementation of these devices…

  • [FAQ] INA190: How Offset (Vos) and Bias Currents (IB) Affect Low Current Measurements

    Part Number: INA190 Other Parts Discussed in Thread: INA240 , INA138 , INA216 , INA270 , INA193 , INA203 , INA200 , INA226 , INA170 , LMP8645 , INA223 , INA282 , INA210 , INA199-Q1 , INA180 , INA181 , INA121 What are the design considerations when making…

  • [FAQ] INA199: Does power sequencing for my current shunt monitor matter?

    Part Number: INA199 I expect that when I turn on my system, there will be a delay between when my microcontroller is ready for measurement and when my INA199 is properly powered on. Will this produce errors in my microcontroller readings?

  • [FAQ] INA199: Dealing with device protection when you can't exceed -0.3V

    Part Number: INA199 How do I protect against reverse current when I can only allow my signal to be 0.3V below ground?

  • [FAQ] INA199: Closed Loop Output Impedance and Output Compensation for Capacitive Load Stability

    Part Number: INA199 Other Parts Discussed in Thread: TINA-TI , How do I use the closed loop output impedance (Zout) to stabilize the output of a current sense amplifier with a capacitive load?

  • [FAQ] INA226: Choosing a Pull-up Resistor for an I2C Bus

    Part Number: INA226 How do I choose a good pull-up resistor to use on an I2C bus?

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