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    Answered

  • RE: OPA1642: impedance detector circuit - issue can i use opa1642

    Resolved
    OPA2134 would also be a good choice, but compared to the AN4558 specifications may still be overkill. In this application, you could probably get away with something like a TL072 or other general-purpose op amp. It actually looks like the least expensive…

  • RE: OPA1641: OPA1641 Application

    Hi Alex, Thank you for reply! Today, we use TI's 3 different kinds of op amp to simulate, the models are TL971, OPA1641, RC4558. From the simulation results, RC4558 is ideal, but the output is only 3.5V. Is it possible to recommend a op amplifier that…

  • RE: OPA differential input protection and range

    Bell, If "OPA" can mean op-amps from other prefixes other than OPA series, then these are high voltage op amps with high VID tolerance (and low cost). TS321, LM358, LM324 family of devices. TL031, TL061, TL071, TL081 where 1 = {1,2,4} RC455…
    • Answered

  • Unused op-amp in RC4558P

    Resolved
    Other Parts Discussed in Thread: RC4558 , UA741 I have a circuit with one unused op-amp in a dual RC4558P. It is single supply from a 9V battery. I noticed the unused op-amp had all three pins left floating. In order to minimise current consumption, I connected…
    • Resolved

  • Plz explain this buffer circuit ...

    Other Parts Discussed in Thread: RC4558 Hi I'm stuck trying to understand a part of this and would appreciate any pointers from you. This is a working circuit and reproduced as it is. a) The input 1uF capacitor (connected in reverse) - this is a polar…

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