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About the characteristic evaluation method

Y.Ottey
Mastermind 6145 points

Dear all,

Our customer would like to know about characteristic evaluation method of A / D converter for differential input.

When characterizing the A / D converter itself, which of the following methods is used at TI?

1. Prepare two standard voltage generators, connect them between the + input and GND, and between the-input and GND, synchronize the two voltage generators, and apply a voltage.

If it answer No.1, please tell us which manufacturer's standard voltage generator is used at TI. 

2. Connect a single-ended-differential amplifier to the input, and apply one standard voltage generator.

If it answer No.2, please tell us which product is often used as a single-ended-differential amplifier.

I would appreciate it if you could reply to me as soon as possible.

Best Regards,

Y.Ottey

  • 0
    TI__Guru**** 181021 points

    Hi Y.Ottey,

    This is a pretty open ended question.  We do not use method 1 listed above, we  do use single ended to differential signaling and on some parts we'll use a true differential source.  Each test engineer is free to chose the particulars of the test circuit so there is no 'one size fits all' solution that we use.  If you have application questions about a specific ADC, please do let us know and perhaps we can give you some more specific detail.