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L9680 bảng dữ liệu(PDF) 223 Page - STMicroelectronics

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L9680 bảng dữ liệu(HTML) 223 Page - STMicroelectronics

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L9680
Temperature sensor
276
15
Temperature sensor
The L9680 provides an internal analog temperature sensor. The sensor is aimed to have a
reference for the average junction temperature on silicon surface. The sensor is placed far
away from power dissipating stages and squib deployment drivers. The output of the
temperature sensor is available via SPI through ADC conversion, as shown in Table 18. The
formula to calculate temperature from ADC reading is the following one:
T
C

180
220
1.652
---------------


ADCREF
2
ADCRES
------------------------ DIAGCTRLn ADCRESn




0.739
–



–
=
@ DIAGCTRLn(ADCREQn) = 0Ahex
All parametric requirements for this block can be found in specification tables.



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