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L9680 bảng dữ liệu(PDF) 226 Page - STMicroelectronics

tên linh kiện L9680
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L9680 bảng dữ liệu(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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