BQ34Z100温度测量范围问题咨询

user5267902

Prodigy 10 points

规格书上说，内部和外部温度测量的AD为16位，测量范围为0-6553.5ºK

实际模拟测试时，使用外部温度测量，开路温度电阻显示为-39℃，短路温度电阻显示为123℃。

请问能否调整温度显示范围至少到-55~125℃或更高。（温度探头实际使用为103F3435，与规格书推荐的AT103参数很接近，给的参数表范围为-55~125℃）

7 年多前

0 answer 7 年多前

TI__Mastermind 27115 points

您好，一般温度传感器在极低温度时的精度误差会变得比较大

0 Rock Su 7 年多前回复 answer

TI__Expert 3165 points

To determine the proper polynomial for the 103F3435, please download the following app note and spread sheet:

www.ti.com/.../litabsmultiplefilelist.tsp

For more information on applications and thermistors that have used the above tool for adjusting the polynomial, this app note further discusses thermistor selection :

www.ti.com/.../slua621.pdf

Send me the SREC of your device and then calculated values from the spreadsheet and I will send you back an adjusted SREC file.

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BQ34Z100温度测量范围问题咨询