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  • OPA820: pulse fall-time is getteing reduced using 8-to-1 inverting summing amplifier with OPA820

    Part Number: OPA820 Tool/software: Hello I have built an 8-to-1 inverting summing amplifier using OPA820 where, R_f = R = 1K (unity gain). However, I can see a reduction in pulse fall-time which I don't understand. Does anyone who the reason? Is it…
    • Answered

  • RE: OPA820: CMRR characterization

    Resolved
    Hi, The CMRR plots in the datasheet are captured in simulation and an ideal ac signal source is used. Meaning there is no signal settings used as it is an ideal small signal source. Best Regards, Ignacio
    • Answered

  • OPA820: Input offset voltage gets doubled for unity gain

    Resolved
    Part Number: OPA820 Hello All, I am performing the worst case calculation for input offset voltage of OPA820 for unity gain circuit . Datsheet says the offset voltage is +/- 1.2mV for -40C to +85C range. Since its unity gain configuration , will the…
    • Resolved

  • TMUX1101: TMUX1101 with inverting summing amplifier showing high-pass filtering?

    Part Number: TMUX1101 Other Parts Discussed in Thread: OPA820 Tool/software: Hello I have built an four input inverting summing Amplifier using OPA820 and the feed comes from TMUX1101 output. The rise time and fall time of the summing amplifier output…
    • Answered

  • OPA820: Pspice model issue

    Resolved
    Part Number: OPA820 Other Parts Discussed in Thread: TINA-TI Hi Team, I downloaded the OPA820 spice model, in order to use it with LTSPICE. Working within the datasheet conditions: GAIN=+2, Vout=2Vpp, Supply +/-5V, I have a distorted signal at 10MHz . …
    • Resolved
    • Answered

  • OPA820: Settling tome data

    Resolved
    Part Number: OPA820 Other Parts Discussed in Thread: BUF602 , ADS52J65 Hello. The OPA820 is unity gain stable. Why its settling time data is for G=+2 only? I would like to know for G=1. I addition, why the data is for 0.02% and not for 0.01%? Thanks …
    • Resolved
    • Answered

  • OPA820: High current output (46mA) rising edge slew rate

    Resolved
    Part Number: OPA820 Other Parts Discussed in Thread: DEM-OPA-SOT-1A , , TINA-TI Hallo, I can not verify the Noninverting Pulse Response in our applikation. VCC=6.2V...10V, VSS=-2V, Gain=+1, Pulse Signal High Level 4.6V, Pulse Signal Low Level 1V Load…
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    • Answered

  • OPA820: Design Methodology for MFB Filters

    Resolved
    Part Number: OPA820 Other Parts Discussed in Thread: OPA317 Hello, I'm using the document " www.ti.com/lit/an/sboa114/sboa114.pdf " "Design Methodology for MFB Filters in ADC Interface" to design a 2nd order Low-pass filter with a gain of 1 and…
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    • Answered

  • OPA820-HT: OPA820-HT Gold Wiring

    Resolved
    Part Number: OPA820-HT I have customer asking if he can use gold wiring to the OPA820-HT. This does not seem to be an issue with me, but I wanted to confirm this with the factory engineers to verify that this will not be an issue. Thanks for your help…
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    • Answered

  • OPA820: Is it typo? at Electrical Characteristics : Vs = 5V

    Resolved
    Part Number: OPA820 Hello, Just to be sure, let me check. I checked the quiescent current of the OPA820 with 5V operation. It is mentioned " Vs = +/- 5V" at the TEST CONDITION of the Quiescent Current spec. on the datasheet. Is it typo? Regards…
    • Resolved

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