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  • OPA397: Buffer OpAmp choice for ADC inputs

    TI Thinks Resolved
    Part Number: OPA397 Other Parts Discussed in Thread: OPA328 , ADS131A04 , TINA-TI This is a follow-up for my previous question here: ADS131A04: Using REFP on analog input pins for TIA design - Data converters forum - Data converters - TI E2E support forums…
    • Answered

  • OPA397: How to improve FRA

    Resolved
    Part Number: OPA397 Tool/software: Hi Team. When using OPA397 as a voltage follower as shown in the circuit diagram, is there a way to improve the frequency characteristics from 1kHz to 200kHz? Regards.

  • OPA397: The input and output voltage suddenly drops to 0V.

    Part Number: OPA397 Tool/software: Dear Team, I'm using the OPA397 to monitor the output voltage of the DC-DC converter. As I increase the output voltage of the DC-DC converter, the input and output terminals of the OPA397 suddenly drop to 0V. Initially…

  • OPA397: GP OPMAP

    TI Thinks Resolved
    Part Number: OPA397 Hi I would like to know whether the die used in single, dual and quad packages is the same or is a different die. Also are these parts packaged at the same location or at different locations? TI OPA397DBVR SOT23…
    • Answered

  • OPA397: Datasheet Error

    Resolved
    Part Number: OPA397 Hello TI, Just FYI, there is an error in the OPA397 datasheet. Figure 6.8 is labeled as "Input Bias Current vs. Temperature", but the graph is of "Input Bias Current vs. Common-Mode Voltage" at Vs=5.5V Have a nice day, Ben
    • Resolved

  • LMP7721MAEVALMF_NOPB: LMP7721 EVM Wiring for ±0.5V Ion-Selective Electrode (Single Supply)

    TI Thinks Resolved
    Part Number: LMP7721MAEVALMF_NOPB Other Parts Discussed in Thread: LMP7721 , OPA392 , OPA397 We have purchased TI’s LMP7721 Multi-Function Evaluation Board. Without modifying the original board layout, I wired 5V to the V+ terminal and directly shorted…
    • Answered

  • LMP7715: Requirement to measure small currents

    Resolved
    Part Number: LMP7715 Other Parts Discussed in Thread: LMP7721 , OPA397 , TLV9061 , OPA392 Tool/software: I have an interesting requirement and thought I'd bring it up here for an open discussion. I need to measure small currents - less than 1nA. As a…
    • Resolved
    • Answered

  • OPA145: CM voltage range (max) acc to DS: (V+)-3.5V (?) at supply +/-2.25 V

    Resolved
    Part Number: OPA145 Other Parts Discussed in Thread: OPA392 , OPA397 , OPA325 Acc to the datasheet the OPA145 CM voltage range (max) is (V+)-3.5V. However, the diagrams are stated at VCM = Vs/2 even for +/-2.25 V supply. I can't see how these specs are…
    • Resolved
    • Answered

  • RE: ADS131A04: Using REFP on analog input pins for TIA design

    Resolved
    Thanks for the prompt reply, and for the suggestion! As suggested, I will try to add a buffer to ensure adequate current sourcing capability. For reference, I asked a separate question here: OPA397: Buffer OpAmp choice for ADC inputs - Amplifiers forum…

  • OPA2387: Internal circuit Diagram of the component

    TI Thinks Resolved
    Part Number: OPA2387 Other Parts Discussed in Thread: OPA387 , ADS1299 , OPA397 , OPA2392 , OPA2376 , OPA2391 , TLV2376 Tool/software: Hello, we are designing a EEG Device ,where the device is suitable for EEG device as pre amplifier in AFE. And also…

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