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  • OPA4140: Cavity/PIND Question

    Part Number: OPA4140 Please advise whether this device is considered a “cavity” part. If so, whether TI performed any PIND test? PIND (Particle Impact Noise Detection) OPA4140AIPWR
    • Answered

  • OPA4140: DC Sweep of 0-5V with +/-5V rails does not result in 0-5V Output

    Resolved
    Part Number: OPA4140 Other Parts Discussed in Thread: OPA140 Hi, I'm designing a Sallen-Key filter and need to know the DC transfer function of the filter. The OPA4140 touts Rail-to-rail output, so I don't understand why my DC sweep from 0-5V doesn…
    • Resolved
    • Answered

  • OPA4140: The minimum value of the slew rate.

    Resolved
    Part Number: OPA4140 Other Parts Discussed in Thread: OPA140 , OPA2677 , , TL072 Hi team, I'd like to know about the minimum value of the slew rate. Of course, I know this value is not specified in the datasheet. (Just write TYP) I'd like to know it for our…
    • Resolved

  • OPA4140: Output voltage shift

    Part Number: OPA4140 Hello team, . Customer see the output voltage shift at the operation in some devices and they are looking into the root cause. Here is their inquiries. - Is there possibility that the output is changed about 2.5% at stable input…
    • Answered

  • OPA4140: PSPICE Simulation Reference Design

    Resolved
    Part Number: OPA4140 I'm using PSPICE for TI and attempting to simulate the OAP4140 (transient analysis). Any time I change the negative supply to a value other than the same value for the positive supply, the simulation fails. For instance, the standard…
    • Resolved
    • Answered

  • OPA4140: Amplifier circuit support required on redesigning/optimizing

    Resolved
    Part Number: OPA4140 Other Parts Discussed in Thread: DAC7564 As a part of my new project I need to redesign UV LED driving circuit. Here I am using TI’s AM335x processor and using the SPI I have connected one DAC – LTC2668-12. The DAC output is going…
    • Resolved

  • OPA4140: Noise problem

    TI Thinks Resolved
    Part Number: OPA4140 Other Parts Discussed in Thread: OPA140 , OPA2132 , OPA197 , OPA192 Hi: There is a problem about the use of OPA4140, please help to confirm: Three of them are used as amplifiers and the other as voltage follower.Attached are the circuits…

  • RE: OPA140: Part number from top marking

    ti.com/packaging/en/docs/partlookup.tsp?partmarking=O4140A says that this is an OPA4140.

  • RE: OPA4209: Measurement Variation with the OPA4209.

    Hi Felipe, OPA4209 is bipolar precision op amp, and the Ib should be in ±1nA (typ.) to 8nA range. With the low input difference voltage of 1mV, the Ib feeback current is too low for the topology. It would be better to use op amp with CMOS construction.…
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  • CCS/OPA4140: OPA4140 overcurrent

    Resolved
    Part Number: OPA4140 Other Parts Discussed in Thread: CC2541 , , TPS65133 , TINA-TI , OPA137 , OPA140 Tool/software: Code Composer Studio Dear TI officer and members, Currently, I am using the CC2541 to collect an analog signal. The amplifier of OPA4140 was…
    • Resolved

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