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LM2903B: Comparison of some parameters between LM2903B and LM2903B-Q1

jeno.zhang

Expert 1865 points

Part Number: LM2903B
Other Parts Discussed in Thread: LM2903, LM2903-Q1, , LM339

hi，

As shown in item 4 of the following figure, the outputs of the car gauge level LM2903B-Q1 and LM2903-Q1 are different, and the non rail level LM2903B and LM2903 are not indicated. May I ask if the non rail level chip B version is the same as the car track?

0 Clemens Ladisch 9 months ago

Guru 245480 points

All non-B variants behave the same, and all B variants behave the same. The second datasheet has not yet been updated.

In any case, you should not rely on any specific behaviour outside the common-mode range.

0 Chuck Sins 9 months ago in reply to Clemens Ladisch

TI__Mastermind 23505 points

Jeno

Thanks for post and sorry for the confusion. We will be updating the datasheet as Clemens has mentioned to reflect the same message.

Chuck

0 Paul Grohe 9 months ago

TI__Guru 50206 points

Hello Jeno,

Please see the LM339 family application note, section 2 thru 2.3 especially. It is all explained there:

Application Design Guidelines for LM339, LM393, TL331 Family Comparators