Search tips
Showing 76 results View by: Thread Post Sort by
    Answered

  • OPA828: Requirements for proper OPA627 replacement

    Resolved
    Part Number: OPA828 Other Parts Discussed in Thread: OPA627 , OPA140 , OPA2828 , OPA827 Hello, We have legacy TIA for photodiode that was using OPA627. TI lists OPA828 as being a "drop-in" replacement for it however after just swapping OPA627 to OPA828 device…
    • Resolved
    • Answered

  • OPA828: Package influence on input bias current

    Resolved
    Part Number: OPA828 Other Parts Discussed in Thread: LF356 , Asking on behalf of customer. According to first page of datasheet, input bias is 10x different DGN package vs. D package. What is driving this discrepancy? Contact me internally if further details…
    • Resolved
    • Answered

  • OPA828: Some more corrections for SBOA354

    Resolved
    Part Number: OPA828 Other Parts Discussed in Thread: THP210 , THS4561 So I still have not seen a reply on the one question I had in this thread, what equation for Cf is Hasan using in his Zt excel designer. https://e2e.ti.com/support/amplifiers-group…
    • Resolved
    • Answered

  • OPA828: Confusing plot in the datasheet

    Resolved
    Part Number: OPA828 This seems to be a new plot, can't make much sense out of it, does the Aol polarity really change across temperature - surely not, Being bounded by 0.1uV/V, I am interpeting this as the inverse of the DC Aol and it implies …
    • Resolved
    • Answered

  • OPA828: Basic question about imput impedance

    Resolved
    Part Number: OPA828 Hi, Let me ask you some basic questions about input impedance. There describes the value in the datasheet 5 page, 1Tohm. Q1) What is the meaning of "Differential"(ZID) and "common"(ZICM)? Q2) How do you measure…
    • Resolved
    • Answered

  • RE: OPA828: Survey of transimpedance compensation solutions - where did this one solution come from?

    Resolved
    So to close this out, the earliest discussions I can find simply set the feedback pole at Fo and yield a 45deg phase margin and lots of ringing. (Walt Jung's comprehensive Op Amp Applications Handbook, page 273). This primitive approach (which I am sure…
    • Answered

  • OPA828: Unity-gain stable?

    Resolved
    Part Number: OPA828 Hi team, I couldn't find the phrase of "unity-gain stable" in the datasheet. This means we need to add some caps for unity gain purpose? From Fig22, it looks to have enough phase margin, though. Let me clarify if we…
    • Resolved
    • Answered

  • OPA828: How to interpet specs?

    Resolved
    Part Number: OPA828 Other Parts Discussed in Thread: TINA-TI In updating a parametric database with new parts, I find myself looking at the OPA828 right now. This one is a little faster for the PA world, but in the spec table I see a unity gain bandwidth…
    • Resolved

  • OPA828: ibias vs freq

    TI Thinks Resolved
    Part Number: OPA828 Hi Team, Customer wants to double check if this device has stable bias current / offset current below 10MHz? (in buffer config) In other words, is this device bias current sensitive to input signal frequency? Customer likes this device…

  • OPA828: what bring "step response delay"?

    TI Thinks Resolved
    Part Number: OPA828 Hi, from datasheet, here is a figure to show "large-signal step response" as below: so : ①it seems like the output delay is around 20ns, what the reason for amps' this delay? do we have any document for that? …

Didn't find what you are looking for? Post a new question.