• 

  Paul Kim

  • over 2 years ago
  • Amplifiers
  • Amplifiers forum

  INA138-Q1: about input bias current

  TI Thinks Resolved

  Part Number: INA138-Q1 Hi team INA138-Q1 D/S say Input bias current = Max 10uA. so total input bias current would be Max 20uA(= 10uA x 2) for two input pins ? further, may I know total input bias current for two input pins at Vs = 0V and common...
• 

  Kotaro Yamashita

  • over 3 years ago
  • Amplifiers
  • Amplifiers forum

  INA138-Q1: Variation data of internal resistor

  • Resolved

  Part Number: INA138 - Q1 Hi Team, 1. Is there any variation data of internal resistors(5kohm) at room
• 

  Guang Zhou

  • 6 months ago
  • Amplifiers
  • Amplifiers forum

  RE: INA240-Q1: Gain <20

  Hi, It is not recommended to adjust the gain externally. Please consider reducing the shunt resistor value as Kai suggested. In addition, we have the following lower gain options: LMP8278-Q1 gain of 14; INA138-Q1, INA168-Q1, INA139-Q1 and INA169-Q1...
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  Peter Iliya

  • over 3 years ago
  • Amplifiers
  • Amplifiers forum

  RE: INA138-Q1: INA138 does not have inverted battery protection, when it is used to measure the charge current to a battery.

  Hey Reinaldo, The reason there is excessive current is because if battery is misplaced, then the common-mode voltage (or -VIN) becomes a negative voltage (equal to battery voltage) that is much more negative than INA138's -0.3V absolute maximum...
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  Peter Iliya

  • over 3 years ago
  • Amplifiers
  • Amplifiers forum

  RE: INA138: INA138: Pin configuration & funtions contradicts

  Shanthini, Thanks for bringing this to our attention. We will have the INA138 datasheet corrected in the next day and posted next week. In the meantime, if you need a correct pinout table you can use the INA138-Q1 datasheet. Sincerely, Peter Iliya
• 

  Stani Bell Ngoufack Tchoufack89

  • 8 months ago
  • Amplifiers
  • Amplifiers forum

  INA180-Q1: Pspice model (INA180A2) behaviour

  TI Thinks Resolved

  Part Number: INA180-Q1 Hello, my customer is using INA180A2QDBVRQ1 (current sense amplifier) in their project.While using this model in SIMetrix 8.3 for simulation work, with PWM signal input the output voltage is decreasing if the current load starts...
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  Peter Iliya

  • over 3 years ago
  • Amplifiers
  • Amplifiers forum

  RE: INA225-Q1: Sensing 0.085mA and Detecting no load(0mA)

  Dear Kuramochi, I am looking at this with my team right now and will get back to you with a recommendation. Thank you for all of your information. What is the common-mode voltage (Vcm) of your system? Basically since this is a high-side application...
• 

  Peter Iliya

  • over 2 years ago
  • Amplifiers
  • Amplifiers forum

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

  There are several error sources to consider when sensing current (or using amplifiers in general) such as CMR, PSR, noise, gain error, and voltage offset drift, but two device properties (input bias current (I B ) and input offset voltage (V OS ) ) are...

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