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  • OPA2991: OPA2991 damage in immunity tests

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    Part Number: OPA2991 Hello, We’re currently working on a customer project : Energy transducer (Power metering and monitoring device) we use the OPA2991 as : 2- voltage-current converter (for the 2nd channel of the device) to create 20mA current…
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  • OPA2991: Slew Rate distribution

    TI Thinks Resolved
    Part Number: OPA2991 Hello my customer is checking AMP performance with OPA2991. The key performance is slew rata which says 21V/us (typ). I want you check how much the veriability is. The competitive part is ADA4000-2. I believe there should be characterization…

  • OPA2991: AD8138/AD

    TI Thinks Resolved
    Part Number: OPA2991 Tool/software: Can some tell me how to solve this issue
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  • OPA2991-Q1: Maximum bias current

    Resolved
    Part Number: OPA2991-Q1 Other Parts Discussed in Thread: OPA991 Hi team, My customer is evaluating OPA2991-Q1 in OBCDCDC application. Need your help to provide the maximum value of bias current acorss temperature. Datasheet only have typ. value. …
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  • OPA2991: OPA2991 as a Comparator

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    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.
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  • 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
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  • OPA2991: Input Biasing for Disabled Channels

    Resolved
    Part Number: OPA2991 Tool/software: Hi Folks, There's plenty of material out there describing how to properly bias an unused OPA channel (e.g. How to Properly Configure Unused Operational Amplifiers (Rev. A) ). While this is true for channels that are…
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  • OPA2991: Poor linearity

    Resolved
    Part Number: OPA2991 Other Parts Discussed in Thread: OPA2107 , OPA991 , TINA-TI , TLV9362 Tool/software: We are updating a design with OPA2991 that previously used OPA2107, OPA2991 being the recommended replacement. Our configuration is a simple…
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  • 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: 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…
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