xue yunyang

temperature sensor and two-stage amplifiler

Discussion created by xue yunyang on Mar 17, 2006
Latest reply on Mar 17, 2006 by xue yunyang
I want to use the temperature sensor in the MC68HC908SR12.In data sheet
24.14.1 table 24-12,it said temperature slope:VDD=5V±10%,GAINA=2,GAINB=6
MIN 1.275 ADCsteps/C,Typ 1.338ADCsteps/C,Max 1.372ADCsteps/C,
I set

 AMGCR=81;//GAINA=2,GAINB=6
 AMSCR=34;
 AMCR=240;

as the expert told me,now I get ADC value 693 or 724,I want to know what
is the MC68HC908SR12 real temperature?any help will be appreciated.
 

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