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OPA2333: Replace TSZ122IST

Genius 9440 points

Replies: 5

Views: 154

Part Number: OPA2333

Dear Team,

May I check with you is this one the best fit to replace TSZ122IST?

BR

Kevin

  • Hi Kuan,

    Thank you for your post, please take a look at our OPA2333 and let me know your thoughts:

    -Tamara

    -Tamara Alani
    Learn more about IAs here.

  • In reply to Tamara M Alani:

    Here is the OPA333 LG sim,right about 398kHz GBP - not the 350kHz in the data sheet

    Same setup below with theST part, 

    Almost identical GBP, maybe a little more PM at Aol=0dB

    Here is the LG file with the ST part, FYI, 

    TSZ121_ST Chopper.TSC

    Michael Steffes

  • In reply to Michael Steffes:

    Morning, kind of looking at  that nice spec comp Tamara put in earlier - if I do the same thing using the parametric tool I get this. That TLV2333 would be a lower cost option, kind of in the 0.70 region 1k, 

    Michael Steffes

  • In reply to Michael Steffes:

    Oh and incidentally, that 350kHz GBP is incorrect for the x333 family. Not sure where that came from but the TINA model (just updated) shows 400kHz, matching the ST part. I tried to review these issues in this recent article, not an uncommon mistake. This one includes a new mapping to closed loop F-3dB vs phase margin. 

    https://www.planetanalog.com/why-is-amplifier-gbp-so-confusing-insight-12/

    Michael Steffes

  • In reply to Michael Steffes:

    The max supply current per amplifier in the parametric table for the TLVx333 was perplexing - that 17uA number is typical not max. That is a mistake in the database - PDS shows 29uA max for the TLVx333, > 25uA max for the OPAx333 parts - what I would expect for these DC relaxed spec TLV versions. 

    Michael Steffes

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