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L9680 데이터시트(PDF) 226 Page - STMicroelectronics

부품명 L9680
상세설명  Automotive advanced airbag for mid/high end applications and cut-off battery IC
PDF  286 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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L9680 데이터시트(HTML) 226 Page - STMicroelectronics

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Temperature sensor
L9680
226/286
DS11615 Rev 7
15
Temperature sensor
The L9680 provides an internal analog temperature sensor. The sensor is aimed at having a
reference for the average junction temperature on silicon surface. The sensor is placed far
away from power dissipating stages and squib/pyroswitch 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:
@ DIAGCTRLn(ADCREQn) = 0Ahex
All parametric requirements for this block can be found in the specification tables.
T C
180
220
1.652
---------------
ADCREF
2
ADCRES
------------------------ DIAGCTRLn ADCRESn
0.739
–
–
=



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