one application of TMP007

Ted Xu

Hi BU team

My customer Finisar shanghai site issued an application issue of TMP007 , where TMP007 was in a heat flow meter and monitor the temerature of optical module's shell. In Ctm's application, thermopile’s ambient temperature may vary from -45 to 80℃. In order to prevent the affection of ambient temperature which could degenerate thermopile’s accuracy. I want to place a TEC beneath the thermopile(back side of PCB), to stabilize the conjunction temperature. that is to say,

Is this method reasonable?

thanks

over 11 years ago

0 Mayrim Verdejo over 11 years ago

TI__Genius 15760 points

Hi Ted,

We received your question. I will ask our TMP007 expert to review your question and get back to you ASAP.

Mayrim

0 Werner Metz over 11 years ago in reply to Mayrim Verdejo

TI__Expert 3370 points

Hi Ted,

While definitely helpful, the TEC may not required depending on the accuracy desired (do keep the die temperature below 125C.)

In the TMP007 data sheet, Section 8.2.1, Figures 50 shows it is possible to maintain an accuracy of +/- 2C over a die temp range of 0-60C. If greater accuracy is required then the TEC would help by maintaining a more constant die temp.

I would recommend to prototype with the TEC in place, then try calibraion with the TEC turned on and and then turned off.

Regards,

Werner

0 Ted Xu over 11 years ago in reply to Werner Metz

TI__Expert 4590 points

Wemer

Thanks for your comments. Will foward to customer and let customer try it.

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one application of TMP007