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THS7530-Q1: THS7530

mark zeid
Prodigy 30 points
Part Number: THS7530-Q1
Other Parts Discussed in Thread: THS7530

Tool/software:

The data sheet states that normally the part is set up where Vs+ is +5V and Vs- is ground.  Can I use this with Vs+ = +2.5 and Vs- = -2.5? 

I am also doing a DC input on the Vin+/Vin-

Both the spice models in PSpice and TINA seem to have problems (either convergence in Pspice or outputs fixed at -2.5V) in this configuration.

Regards,

Mark

  • 0
    TI__Mastermind 19146 points

    Hello Mark,

    You are able to use the THS7530-Q1 with split/bipolar supplies.  It is likely a convergence and/or simulator issue with the SPICE model. 

    If you share your circuit I can take a look at simulating and see if I can find a small fix. 

    Section 10 of the datasheet details the ability to use split/bipolar supplies, as long as the total supply voltage does not exceed 5.5V. 

    Best,

    Alec

  • 0 in reply to Alec Saebeler
    Prodigy 30 points

    I sent the spice files via email reply.

  • 0 in reply to mark zeid
    TI__Mastermind 19146 points

    Hello Mark,

    I have not yet received the SPICE files.  I am sending you a message with my email address.

    I apologize, I am not sure why the file transfer did not work.

    Best,

    Alec

  • 0 in reply to Alec Saebeler
    TI__Mastermind 19146 points

    Hello Mark,

    I am closing this thread as I am supporting via email.  For the forum, the THS7530 model is designed to work in split supply and single-supply configuration.  The model operates at a +/-2.5V supply configuration.  Please be aware the model requires different design methodology than a typical voltage-feedback op-amp, as the THS7530 is a variable gain amplifier (VGA).

    Best,

    Alec