characteristics of LPS331AP - Temperature Sensing

[jwu]

Posted on May 22, 2014 at 09:08

Is there more detailed spec on the temperature sensing of this part? In the data sheet it states +/- 2C from 0-80C. Is there a range where it is tighter?

We are finding that room temp (~25C) we are on the high end +1.4C to + 1.7C on many of the production units. This is ''within spec'', but I'm wondering if it should be tighter at room temp. We have other temp sensors on the same board which do have a tighter spec of +/- 0.5C at room temp, but then go up to +/-2C at –40C and + 120C.

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Also, we are seeing that the pressure sensor does not provide temperature values below about –25C, is this expected? The operating temp should be down to –40C.

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[Nickname3460_O]

Posted on October 06, 2014 at 16:27

Hello,

Indeed the LPS331AP data sheet  specifies 2 different parameters:

Top = Operating Temperature Range , - 40

°C

to 85

°C

that represents the temperature range physically supported by the sensor package . 

Tfull = Full Accuracy Temperature Range, 0 to 80

°C,  

that represents the temperature range where we provide specifications on  temperature and pressure accuracy.

therefore Tfull  is the right temperature  range you have to consider for your developments.

Best Regards