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Showing 69 results View by: Thread Post Sort by
  • Raymond Zhang1
    Raymond Zhang1
    • 2 months ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA191: Need similar OPA191 solution with VCOM function

    Hi Paul, can OP191 use non-symmetrical power source? Yes, it will work fine. Below is the power rail and Vcm and Vout swing requirements. /cfs-file/__key/communityserver-discussions-components-files/14/OPA191-Vcm-input-range-11232020.TSC If...
  • Paul Yeh
    Paul Yeh
    • 5 months ago
    • Amplifiers
    • Amplifiers forum

    OPA191: To double checking customer's circuit

    TI Thinks Resolved
    Part Number: OPA191 Hi my customer design OPA191 and need us to double check is their schematic ok or not. Please help to check. Atfirst, the AI side input signal voltage range is +/-5V and the OPA191 output should become 0~5V voltage range, so...
  • Thomas Kuehl
    Thomas Kuehl
    • over 1 year ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA191: EMI Rejection

    Kato-san, The OPA191 input EMI filter is a first-order, RC differential/common-mode that comes about from the added series resistance and junction related capacitances in the input circuits. Datasheet Figure 60 shows a simplified circuit diagram showing...
  • Tamara M Alani
    Tamara M Alani
    • over 1 year ago
    • Amplifiers
    • Amplifiers forum

    RE: is there any suggested part to replace FP701KR-LF?

    Hi Aki, We actually don't have any amplifiers with integrated voltage references. Take a look at our OPA191: 36V, high-precision, rail-to-rail input/output, low input bias current, low power, 2.5MHz operational amplifier. If this doesn't look...
  • Rocketman46
    Rocketman46
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum

    OPA191: Negative voltage input threshold.

    • Resolved
    Part Number: OPA191 Hi, I am just about to use the OPA191IDBVT op-amp as a non-inverting amplifier
  • Raymond Zhang1
    Raymond Zhang1
    • 9 months ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA189: Using opamp to create a precision negative voltage reference. Can opamp drive decoupling caps?

    Hi Brett, Enclosed is OPA191 with 300Ohm load and 1uF capacitor. It looks stable with square wave. As you can see, the BW of the circuit is reduced significantly. /cfs-file/__key/communityserver-discussions-components-files/14/OPA191-_2D00_1_5F00_7V...
  • kai klaas69
    kai klaas69
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA191: Voltage at -Ve Input Terminal drops below Gnd on 20V single supply

    Hi Rob, hmm, -2.5V at the -input of OPA191 does not sound good. I would try to clamp this pin with a small current Schottky diode like the BAT54 or similar. Kai
  • Marek Lis
    Marek Lis
    • 2 months ago
    • Amplifiers
    • Amplifiers forum

    RE: About small input bias offset voltage Op Amps (chopper noise).

    Below please see my answers: Q1. The chopper noise comes from the input current spikes generated by closing/opening of the front-end switches at the chopper op amp input terminals. In a follower configuration there is no conversion of the current spikes...
  • Brett Gidge
    Brett Gidge
    • 9 months ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA192: In-Loop Compensation Inverting Opamp configuration to create a precision -1.7V reference

    Note, there is an OPA191 in my schematic because that was my initial choice. I'm leaning towards the OPA192 instead. I'm not married to it yet if you have a better option. It needs to be very low offset, low noise and capable of driving the current...
  • Michael Steffes
    Michael Steffes
    • 5 months ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA4191: OPA4191 in Filter Dezign Tool

    Most of these filter programs will cheerfully deliver math based solutions calling for elements that will introduce other issues (high R's can cause noise and phase margin issues) will Q's > than say about 6 will require RC precision you can't...
>

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