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  • LMP8640: RSS error vs. Common-mode voltage

    Resolved
    Part Number: LMP8640 Hi Team, I am trying to use a wonderful RSS error calculator tool on the LMP8640 page, and it gives me hundreds to thousands percent errors that are definitely wrong. The RSS error percentage starts climbing dramatically as common…
    • Resolved

  • RE: LMP8640: The output waveform of the LMP8640

    If you have further experimental waveforms about CMRR of the LMP8640, could you load the waveforms under this post? Regards NaYan

  • LMP8640: Output behaviour when Rload < Rsense

    Part Number: LMP8640 Other Parts Discussed in Thread: INA293 , INA281 Using Spice model found on the forums, the output decreases as the load is decreasing around and below Rsense. Hereafter is the simulation schematic and a plot at Rload=Rsense: …

  • LMP8640: DDR Nvdimm

    TI Thinks Resolved
    Part Number: LMP8640 Other Parts Discussed in Thread: INA199 , Hi Please suggest products suitable for DDR Nvdimm Which of these two is suitable for LMP8640 & INA199 common mode :12V Rsense: 2m ohm Iout: 4.2A ADC: input 0~3v

  • LMP8640: LMP8640MKE-HNOPB

    TI Thinks Resolved
    Part Number: LMP8640 Hi, We purchased this part and encounter some issues. Please see the attachment for the detailed problem and provide the feedback and solution. PowerBoard_VD단잔류전압확인.pptx
    • Answered

  • LMP8640: What is the minimum current sensing?

    Resolved
    Part Number: LMP8640 Other Parts Discussed in Thread: INA293 , INA190 , INA186 Hi ! What is the minimum current sensing in the attached circuit? Can you detect a current of 1[mA]? Thanks for the answer.
    • Resolved

  • LMP8640: LMP8640

    TI Thinks Resolved
    Part Number: LMP8640 I am using LMP8640 having gain = 50, for current sensing. It gets saturated if current is more tham 0.4 A through the current sensing resistor (0.05 Ohm sensing resistor is used). What could be the possible reasons? I am using it…

  • RE: LMP8640: offset current due to VOL limitations

    Hi Javier, one question more regarding the LMP8640: What would the max. voltage on its inputs if there is no current/voltage applied to Rsens and LMP8640 is powered? For example the LMP8640 is used in high.side configuration but Vbat is not available…
    • Answered

  • LMP8640: 25% gain error in simple application circuit

    Resolved
    Part Number: LMP8640 I have a simple application of the LMP8640MK-T (Gain of 20). (Snippet below). I have a a sensor resistor of 50mOhm w/ a kelvin connection. I notived that the apparent gain of the circuit is roughly 25 instead of 20. I Ran a constant…
    • Resolved
    • Answered

  • LMP8640: PSpice model

    Resolved
    Part Number: LMP8640 Other Parts Discussed in Thread: LMP8645 Can you please provide the PSpice model for LMP8640? It has to be this specific part number - similar devices are not accepted by this customer. Thank you!
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