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LM35: A vs C vs D? What alternatives?

AnBer
Mastermind 30150 points
Part Number: LM35
Other Parts Discussed in Thread: TMP235

Team,

-The LM35 datasheet is not well organized to understand which variants are the subset of which one.

Could you please summarize what LM35 variants can be replace which one in term of temperature precision (accuracy, nonelineraity) and stability over the temp ramge?
I am looking for a simple list like this (left device can replace right one to maintain accuracy/lineraity over the complete temp range:
         LM35 > LM35A > LM35CA > LM35C / LM35D

-What newer generation IC would be advise to use to replace LM35 in new designs?


Thanks in advance,

A.

  • 0
    TI__Guru* 91206 points

    Dear AnBer - 

    in the LM35 datasheet, Sections 6.5 & 6.6 cover the LM35A and CA devices electrical specifications, sections 6.7 & 6.8 covers the LM35, LM35C and LM35D electrical specifications.

    In Section 6.9, I would ask you to direct your attention to figures 8 and 9, which show the accuracy differences between the variants, which is what I think you are looking for in a non-tabular form. 

    There is a link at the bottom of every document on ti.com by which you can provide suggestions and feedback, if you so desire, or you can reply back here - either way - your detailed feedback is valuable to us.  

    The TMP235 has same gain, but is slightly less accurate as the LM35 and could be used in newer designs, it comes in SOT23 (DBZ) and SC-70(DCK) packages. It has a wider operating temp range, lower supply voltage minimum, higher supply voltage maximum and draws less current than the LM35.