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  • OPA810: amplifer error calculation

    Resolved
    Part Number: OPA810 Other Parts Discussed in Thread: THS4551 , TPS7A20 Hello, Based on below table from datasheet. Let's take typcial value. - Voffset = 50uV - Ioffset = 10nA So, total error = Voffset + Ioffset * Rf = 50uV + 10nA * 1k ohm = 60uV. …
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  • OPA810: power supply selection

    Resolved
    Part Number: OPA810 Other Parts Discussed in Thread: TPS65133 , Q1: Is there any requirement for selection power supply for this OP? such as accuracy 5% or 1%, PSRR? load regulation? Q2: If use +/5V for this OP, should I use power supply like TPS65133…
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  • OPA810: Please recommend a amplifier

    Resolved
    Part Number: OPA810 I am targeting use below adc circuit to measure external transient by resistor devider. So I need to use OP for the front for OP follower circuit. The target application is for 1MHz signal. The front end resistor divider is 950K …
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  • RE: TPS65133: power solution for opa810 & ths4551 & ads127L11

    Resolved
    Hi Liping, LDO will help to reduce more ripple because of its PSRR, so I think it will be OK. BR Patrick

  • OPA810: Input impedance for differential mode

    TI Thinks Resolved
    Part Number: OPA810 Other Parts Discussed in Thread: OPA863 Hello, According to datasheet of OPA810, this describes only spec for input impedance case of "common mode". On the other hand, case of another opamp (Ex OPA863), there are description…
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  • OPA810: Do we still need the second amplifier at GND side

    Resolved
    Part Number: OPA810 Please see attached schematic. Do we still need the second amplifier at GND side? Can we just remove it and connect to GND directly? What's the best practice? High z front end circuit design.pdf
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  • OPA810: How to improve amplifer circuit noise

    Part Number: OPA810 Other Parts Discussed in Thread: THS4551 , , TINA-TI Hello, Please see below issue. We located the root cause is from amplifier circuit. I would like to ask how to calculate the noise based on current power design. How to improve this…
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  • OPA810: Input Bias Current

    Resolved
    Part Number: OPA810 Hi Team, I am designing a voltage follower circuit using OPA810. There are two graphs for input bias current in the datasheet. Figure 7-53 and Figure 7-54. I believe that Fig. 7-53 Input Bias Current vs Input Common Mode Voltage applies…
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  • OPA810: Input Offset Voltage vs Input Common-Mode Voltage (Vs+ = 5V, Vs- = 0V)

    Resolved
    Part Number: OPA810 Hi team, The customer would like to check the Vos - Vcm chart under Vs+ = 5V, Vs- = 0V. They've checked Figure 7-41 in the datasheet but it seems that chart is for Vs = +- 2.5V. Could you check it and share us the chart for Vs…
    • Resolved

  • OPA810: Supply current per amplifier

    TI Thinks Resolved
    Part Number: OPA810 Hi, I am looking for supply current per amplifier of the op-amp part OPA810IDCKR. In the datasheet Quiescent current per amplifier is given i.e. 4.7mA maximum (for +/-12V supply), supply current is not given in datasheet. Please help…

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