LM77: LM77 Non-linear during low Temperature

Kuan Wei Chen (Kevin Chen)

Genius 9710 points

Part Number: LM77
Other Parts Discussed in Thread: TMP1075, TMP75

Dear Team,

My customer is facing LM77 will send out data non-linear during startup.

We think it might because the temperature is quite low during startup.

I want to suggest the customer use TMP75 or TMP1075, but I can't find similar data on TMP75 and TMP1075's datasheet.

Do you have any comments on it?

Kevin

over 6 years ago

0 Amit Ashara over 6 years ago

TI__Guru**** 244400 points

Hello Kevin,

TMP1075 has a linear output as can be seen in Table-1 of the datasheet.

0 Kuan Wei Chen (Kevin Chen) over 6 years ago in reply to Amit Ashara

TI__Genius 9710 points

Dear Amita,
How can I know the table-1 data is linear?
LM77 data is in the picture, so it is easier to convince the customer.
BR
Kevin

0 Amit Ashara over 6 years ago in reply to Kuan Wei Chen (Kevin Chen)

TI__Guru**** 244400 points

Hello Kuan,

Look at the codes for the temperature. If the code for any temperature follows the N x 0.0625 across the scale, then it is considered linear.

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LM77: LM77 Non-linear during low Temperature