Search tips
Showing 28 results View by: Thread Post Sort by

  • 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

  • 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…
    • 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: 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…
    • Resolved
    • Answered

  • RE: CCS/OPA4140: OPA4140 overcurrent

    Resolved
    Dear Dennis, Thansk so much for your reply. Actually, the input signal between pin 3 and pin 5 is NC. hence the input signal is 0 and the supply current is still very large. I can not find the reason. can I change the OPA4140 to another chip to resolve…

  • RE: OPA4140: The output voltgae problem for OPA4140

    Mickey We haven't heard back from you so we assume this answered your questions. If you need more help just post another reply below. Thanks
    • Answered

  • RE: OPA4140: Amplifier circuit support required on redesigning/optimizing

    Resolved
    Hi Thomas, Thanks for your quick response and this information, your answer give me a good understanding on the circuitry. Regards, Sebastian

  • RE: OPA4140: Noise problem

    Hi, We haven't heard from you in a while. We hope the issue was resolved. I am going to close this thread now. Please reply to re-open. -Tamara
    • Answered

  • OPA4140: OPA4140 IB specific over from -40C~85C

    Resolved
    Part Number: OPA4140 Other Parts Discussed in Thread: OPA2277 , OPA140 Hi Team, I'm selecting a low IB(<200pA through -40c~85C), low offset(<200uV) support up to 30V supply amplifier. It seems OPAx140 is a choice, but I can't find the Ib curve across…
    • Resolved

Didn't find what you are looking for? Post a new question.