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  • 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: About Minimum Output voltage

    Resolved
    Part Number: LMP8640 Hi Team, We have two questions. ----------- [Q1] We are evaluating LMP8640HV-H (H version). Then, VOUT is around 75mV to 150mV when 3pin and 4pin are shorted (VCM=0V). Is this behavior right? <Result> Unit1:75mV Unit2:10…
    • 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!
    • 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…

  • LMP8640-Q1: about input bias current

    TI Thinks Resolved
    Part Number: LMP8640-Q1 Other Parts Discussed in Thread: INA190 Hi team LMP8640-Q1 D/S say Input bias current = Max 28uA at Vs = 5V. so total input bias current would be Max 56uA(= 28uA x 2) for two input pins ? further, may I know total input bias current…

  • LMP8640: Small Vsense specification

    TI Thinks Resolved
    Part Number: LMP8640 Other Parts Discussed in Thread: INA193 About LMP8640, specification of Vsense vs Vout is described only large Vsense scale(0V to 600mV, attached below). Is there any data for small Vsense scale vs Vout? Customer is interested in…

  • LMP8640 for low current (<10uA)

    Other Parts Discussed in Thread: LMP8640 I'm trying to measure very low current (< 10uA) using an LMP8640 with a Gain = 100 (maybe there is a better alternative ?) I'm using a shunt resistor of 500ohms. With the load disconnected, I expect to…

  • Alternate part for INA194?

    TI Thinks Resolved
    Other Parts Discussed in Thread: LMP8640 , INA194 , INA281 Hi, We need an alternative part for the nil-stocked INA914AIDBVR...please could you suggest one? We see the LMP8640, and wonder how that differs from INA914? (We note the extra leg, but its NC so…

  • LMP8640 accuracy calculation

    Other Parts Discussed in Thread: LMP8640 Hi, I am having trouble trying to follow the error estimation given on the application information of the LMP8640 datasheet. http://www.ti.com.cn/cn/lit/ds/symlink/lmp8640.pdf I have followed the example all the…

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