[TriEmbed] ATTiny84A internal temp sensor: how good?

[Scott Hall]

Are you trying to use it to measure atmospheric temperatures? It was designed to
measure chip temperature, to help you program a shutdown or minimizing sequence
before the magic smoke comes out. At work last year we used it to activate a
peizo cooling element as needed, but minimized activation for longer battery
life. We always used an external sensor for environmental conditions.

On 01/27/2014 04:18 PM, Pete Soper wrote:
> The internal sensor in the ATTiny84A stinks without calibration. What I can't
> find in the datasheet (section 16.2) is how good it can get with additional
> calibration points. Would it be reasonable to expect to make it accurate to
> +/- two degrees C across a 0 to 70 degree range if I can calibrate it across
> the full range and refine the slope measurement or is the linearity likely to
> be too poor?
>
> -Pete
>


-- 
Scott G. Hall
Raleigh, NC, USA
ScottGHall1 at GMail.Com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20140127/0e358933/attachment.htm>