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  • OPA140: OPA140 Tina simulation

    TI Thinks Resolved
    Part Number: OPA140 Hi, I try to use OPA140 to design my circuit. When I build a inverter amplifier, the result looks not correct. I am not sure it is because of the supply voltage for omamp too small. When I increase to ±10V, it looks work well.…

  • OPA140: opa140

    Part Number: OPA140 Tool/software: Hi Alec, Thank you very much for your detailed response, and apologies for the delay in getting back to you. The project is currently on hold and may be moving in a different direction, so we won’t be needing an op…

  • OPA140: 1/f Current Noise of OPA140 Opamp

    TI Thinks Resolved
    Part Number: OPA140 Tool/software: Hello, We are working on a very sensitive amplifier to interface with a high impedance sensor. I discovered that the datasheet and the simulation model doesn't include the current 1/f noise. We need to make sure…
    • Answered

  • OPA140: Feeback Factor (β) of TIA

    Resolved
    Part Number: OPA140 Tool/software: App Note Dear All, I came across a Burr-Brown application note from February 1994 (SBOA060 – Noise Analysis of FET Transimpedance Amplifiers ), which presents a detailed noise analysis of a transimpedance amplifier…
    • Resolved

  • OPA140: TRANSIMPEDANCE AMPLIFIER

    Part Number: OPA140 Tool/software: Hello All, I am trying to build a transimpedance amplifier for capacitive sensor. This sensor captures 50Hz power frequency signal by capturing E field created. that being said, the sensor´s presence did not changed…
    • Answered

  • OPA140: Standard Deviation of Input Offset voltage drift

    Resolved
    Part Number: OPA140 Tool/software: Team- The OPA140 lists typical input offset voltage drift as typically +/-0.35 uV/C with a max of 1 uV/C. What is the mean and standard deviation of this parameter? Thanks! -Steve
    • Resolved
    • Answered

  • OPA140: Duplicate settling plot? OPA140

    Resolved
    Part Number: OPA140 Just noticed these two plots, what is the difference between them in conditions?
    • Resolved
    • Answered

  • OPA140: The input limitation of OPA140

    Resolved
    Part Number: OPA140 Other Parts Discussed in Thread: DIYAMP-EVM Hello, I would like to ask, when testing the OPA140EVM board, the power supply is a tracking circuit, and Vcc is a plus or minus 5V power supply. When Vin=4.5V, it dose not meet the range…
    • Resolved
    • Answered

  • OPA140: Input bias current vs temperature

    Resolved
    Part Number: OPA140 Tool/software: Is there a plot for the OPA140 of input bias current vs temperature? The datasheet only shows +/-0.5pA (+/-10pA max) at 25C and +/-3000pA max over the whole temperature range, but I'm assuming it's not a linear ramp…
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    • Answered

  • OPA140: What's the Input Capacitance tolerance?

    Resolved
    Part Number: OPA140 Tool/software: Hi, datasheet bring nominal value 7pF. How is controlled this 7pF? It's a trimmed capacitance to match this number always? What's the tolerance of this parameter? Changes against temperature? This value is highly…
    • Resolved

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