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LMP90078: Characteristics with buffer off

JatanNaik
Expert 4011 points
Part Number: LMP90078


What are the electrical characteristics for this part with Buffer off?  The table 8.5 shows only specs with Buffer ON.  How can we find the equivalent specs with Buffer OFF?

  • 0
    TI__Guru* 98515 points
    Jatan,


    Let me get back to you on this question. I'll need to check with the original design group for the answer.


    Joseph Wu
  • 0 in reply to Joseph Wu
    TI__Guru* 98515 points

    Jatan,

    The original product group emailed me back. As I had thought, the specifications with the buffer off should be the same. It would be unusual for adding a buffer to make any specification like offset, gain error, drift, noise, or INL better.

    Adding the buffer just increases the input impedance of the ADC. Note that if the buffer is enabled, it does limit the input range a little:

    Joseph Wu