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  • OPA189: opa189 suggestion gain?

    Part Number: OPA189 HI Sir I want to confirm whether the original factory has the recommended gain and magnification for OPA189. In addition to the decrease in bandwidth, are there other shortcomings in the revenue value of competition?

  • OPA189: OPAMP choice for ADC

    Part Number: OPA189 Other Parts Discussed in Thread: ADS1256 , , OPA2189 , OPA350 , OPA192 , OPA2192 , OPA320 , REF7025 , TMUX1108 Hello, I was redirected here from the Data converters forum for help with building a calibration board for a handheld instrument…

  • RE: OPA189: OPA189

    Hi Nithin, We haven't heard from you in a while. We hope the issue was resolved. I am going to close thing thread now, please reply to reopen if you have any additional questions / information.

  • OPA189: Asymmetrical Supplies?

    TI Thinks Resolved
    Part Number: OPA189 Other Parts Discussed in Thread: TINA-TI Hi, We are considering the OPA189 for a MEMS based accelerometer. In simulation the SPICE model seems to have an aversion to asymmetrical power supplies. I would like to run it at +20,-5 V. …
    • Answered

  • OPA189: Do SPICE models implicitly reference GROUND

    Resolved
    Part Number: OPA189 Other Parts Discussed in Thread: TINA-TI , INA149 , LMP8480 , OPA388 I am working on a design for a high-side current monitoring circuit, using an OPA189. A very simplified schematic is shown below. I have simulated this simplified schematic…
    • Resolved

  • OPA189: Simulation of VCO using OPA189

    TI Thinks Resolved
    Part Number: OPA189 I am trying to simulate VCO circuit using OPA189 in TINA with no success Could you help in resolving the problem VCO_Test.TSC

  • OPA189: OPA189 input current noise spectral density.

    Part Number: OPA189 Hi, In the OPA189 datasheet there is no plot for the input current noise spectral density. I would like to know how the input current noise spectral density is vs. frequency and if there is some noise peaking around the chopping frequency…

  • RE: OPA189: About its output stage

    Xueliang, Even if your external representation of the internal OPA189 output impedance is perfect, you may NOT expect the same behaviour with the composite configuration because in the later case any signal undergoes double delay and additional phase…

  • OPA189: Vf value of internal diode

    Part Number: OPA189 Hi Team, I'd like to know the Vf value of internal diode of OPA189 to design external input protection circuit. because an external protection should be work faster than internal circuit. And if you have official document of detailed…
    • Answered

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

    Resolved
    Part Number: OPA189 Other Parts Discussed in Thread: ADS131E08 , OPA627 , OPA191 , OPA378 , OPA2210 , OPA192 , LM7705 I have a precision (0.04%) 3V reference and need to create a precision -1.7V rail from it. Note, this is for AVSS of the TI ADS131E08 ADC. …
    • Resolved

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