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  • 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: 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
    • 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…
    • Resolved
    • Answered

  • OPA140: Input bias current testing over temp

    Resolved
    Part Number: OPA140 Tool/software: Hey Precision Amps Team, I have a customer evaluating the OPA140 for a design and we are hoping you can help to provide feedback on expected input bias current performance over temp. There is a plot of I_B over common…
    • Resolved

  • OPA140: Part number from top marking

    Part Number: OPA140 Other Parts Discussed in Thread: OPA4140 Tool/software: kindly help us to find the IC Manufacturer Part No from the available top marking in below image

  • OPA140: Voltage track circuit ,output has noise

    TI Thinks Resolved
    Part Number: OPA140 Other Parts Discussed in Thread: OPA320 Dears: Customer use OPA140 to do voltage track circuit. They found abnormal noise in output voltage. Green waveform is input sine voltage. Blue waveform is output sine voltage. 1- the noise overlap…
    • Answered

  • OPA140: Duplicate settling plot? OPA140

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

  • OPA140: OPAx140: Datasheet Revision history

    TI Thinks Resolved
    Part Number: OPA140 Looking at the Revision History in the datasheet, there is no mention of any changes from Rev. B to Rev. C. What is the difference between Rev.B and Rev.C?
    • Answered

  • OPA140: input common-mode voltage specification

    Resolved
    Part Number: OPA140 Other Parts Discussed in Thread: OPA192 , OPA828 , OPA1677 , OPA4192 I would like to verify that the common-mode input voltage range is correct on the datasheet, (V-)-0.1 min, (V+)-3.5 max. For a ±15 power system that limit the common…
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    • 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

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