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  • LMP8645: offset error

    Part Number: LMP8645 Is the TI spice model for the LMP8645 wrong? Using TI spice, I get an unexpectedly large offset error; I didnt expect this for a part with specs of Vos = 1mV and Ib = 23uA. Using high side current sensing through a .005 ohm sense resistor…
    • Answered

  • LMP8645: Residual voltage issue

    Resolved
    Part Number: LMP8645 Other Parts Discussed in Thread: TPS65132 In our a project , we use LMP8645 to detect the current of DCDC output . The output voltage of DCDC is 1.8V . LMP8645 is connected after the DCDC output . Test condition : The input of DCDC…
    • Resolved
    • Answered

  • LMP8645: low side current sensing with input filter

    Resolved
    Part Number: LMP8645 Hi there, I am using LMP8645 for a low-side current sense application as shown in the attached schematic. The current is a high-frequency diode-rectified unipolar current and I am trying to get the average of it. Therefore I have…
    • Resolved
    • Answered

  • LMP8645: +IN, -IN terminal input voltage range

    Resolved
    Part Number: LMP8645 HI E2E Please let me know the voltage that can be applied to each of +IN and -IN. For example, V+ is connected to +5V, and V- is connected to ground, is the voltage that can be applied to +IN and -IN up to +5V? Best Regards.
    • Resolved

  • LMP8645: similar part with ref voltage input

    TI Thinks Resolved
    Part Number: LMP8645 Other Parts Discussed in Thread: LMP8481 , , INA240 Hello, I’m looking at using the LMP8645/8640, but it lacks the reference input of the LMP8481. Is there a similar part that has a reference voltage input? This would allow us…
    • Answered

  • LMP8645: Saw tooth oscillation on the output when connected to a DCDC

    Resolved
    Part Number: LMP8645 Dear All, In a WPT project, I'm making a feedback with a LMP8645 on the feedback pin of a DCDC buck regulator. The voltage on this pin is Vfb=0.6V during regulation The objective is to increase or decrease the DCDC voltage accordingly…
    • Resolved

  • LMP8645: Can the chip limit the current below 7mA

    Part Number: LMP8645 Other Parts Discussed in Thread: INA190 The load is powered by dcdc,and the maximum current of the load is limited to 7mA,so can LMP8645 limit the current below 7mA? And what the accuracy is?

  • LMP8645: Absolute maximum rating of differential voltage

    TI Thinks Resolved
    Part Number: LMP8645 LMP8645 datasheet is described absolute max rating of +Vin - (-Vin), but only max: 6V. Please let me know about Min voltage range. I think that min voltage range is a little negative voltage, for example -0.3V, correct? Or, is 0V…

  • LMP8645: Voltage at input terminals

    TI Thinks Resolved
    Part Number: LMP8645 Hi, After I'm connecting LMP8645 with 3.3v at the V+ and 0v at V-. I can measure 1.5v at +in and -in terminals. According to my understanding I should see a small floating voltage on those terminals but not something as high as 1…
    • Answered

  • Looking for LMP8645 TINA spice model

    Resolved
    Other Parts Discussed in Thread: LMP8645 , TINA-TI , LMP8646 Hello, I want to simulate LMP8645 (current sensing amplifier) using TI Tina. In the datasheet it states that SNOM087 is the Tina spice model, but I cannot find the model from Tina. Can you please…
    • Resolved

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