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  • OPA2991: Floating nodes in PSpice (Cadence 17.4)

    Resolved
    Part Number: OPA2991 Other Parts Discussed in Thread: TLE2142 , , OPA991 Tool/software: I recently downloaded the PSpice model for the OPA2991 (sbomb49b.zip) from the TI website and attempted to use in my simulation. This sim works great with other TI…
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    • Answered

  • OPA2991: Common mode testing circuit

    Resolved
    Part Number: OPA2991 Tool/software: Hi Experts, We have query from user about this appnote: https://www.ti.com/lit/an/sloa059b/sloa059b.pdf Figure 5-1 (page 8): Question on what kind of test circuit is TI using for their Input offset voltage measurements…
    • Resolved

  • OPA2991-Q1: Is the OPA4991-Q1 a mirrored die of the OPA2991-Q1?

    Part Number: OPA2991-Q1 Other Parts Discussed in Thread: OPA4991 , OPA2991 Tool/software: Is the OPA4991 quad op amp a mirrored duplicate die of the 2991 dual op amp with shared references? Thank you, Cole

  • OPA2991: Washable?

    TI Thinks Resolved
    Part Number: OPA2991 Tool/software: We use DI-Water (Deionized Water) via Aqueous Machine after Reflow/Wave Soldering Process, along with other Components on PCB. What are your recommended part cleaning/washing procedures and/or processes as applied…
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  • OPA2991: OPA2991 as a Comparator

    Resolved
    Part Number: OPA2991 Tool/software: OPA2991 as comparator with V+=+5V V- = -5V In+ =2.5V , In- =0 V,The Out 4.99V work, but The In- Pin has hundred uA current if ground to 0V, ref to datasheet the input current should be low more than this.
    • Resolved

  • OPA2991-Q1: Voltage simulation

    TI Thinks Resolved
    Part Number: OPA2991-Q1 Other Parts Discussed in Thread: OPA2991 Tool/software: Hi Team, I have one qustions about the simulation of the OPA2991. When I input same voltage, the output is the VDD voltage. Do you know what's the reason? Best Regards…

  • OPA2991: PSPICE: when I view PSPICE module but found ERROR(ORCAP-2448):The model OPA2991 could not be found in configured libraries.

    TI Thinks Resolved
    Part Number: OPA2991 Hi, I got the file helped by TI engineer team, and I installed "PSPICE for TI". But when I right click the component and click view pspice module it report ERROR:ERROR(ORCAP-2448):The model OPA2991 could not be found in…
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  • OPA2991: Characterized parameters in temperature

    Resolved
    Part Number: OPA2991 Tool/software: Dear Ti, Which parameters are characterized and measured over -40/+125°C temperature range on the OPA2991(IDR) ? Which parameter are specified by "design" over the -40/+125°C temperature range on the…
    • Resolved

  • OPA2991-Q1: Slew rate and GBW values of OPA2991-Q1 over full operating temperature range

    TI Thinks Resolved
    Part Number: OPA2991-Q1 Hello TI, I am writing this to request some missing information from datasheet of OPA2991-Q1. As shown in the below snap shot, datasheet provides the values(typical) of Slew rate and Gain Bandwidth product only at an ambient temperature…

  • OPA2991: Please review the schematic

    Part Number: OPA2991 Dear TI experts, My customer drew their own schematic with OPA2991. Could you review this schematic? ++ OPA_VCC+ and OPA_VCC- are 5V~20V variable. ++ DAC0_OUT and DAC1_OUT are 3.3V. ++ the voltage of OPA_OUT+ and OPA_OUT- are related…

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