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L9788 Folha de dados(PDF) 143 Page - STMicroelectronics

Nome de Peças L9788
Descrição Electrónicos  Multifunction IC for automotive engine management system
PDF  264 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9788 Folha de dados(HTML) 143 Page - STMicroelectronics

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DS12308 Rev 4
143/264
L9788
Inductive sensor interface
263
The interface handles signals coming from magnetic pick-up sensors, see Figure 63, or Hall
Effect sensors with two possible configurations, as per Figure 64 and Figure 65.
The interface feeds the digital signal to microcontroller that extracts flying wheel rotational
position, angular speed and acceleration.
Figure 63. Variable reluctance sensor (VRS)
Table 61. VRS sensor parameters
Symbol
Parameter
Min
Typ
Max
Unit
Rs
Sensor resistance
300
600
1000
Ω
Ls
Sensor inductor
-
250
-
mH
Vdiff
Sensor output voltage
-200
-
+200
V
Tout
Output period
100
-
5000
µs
FLW_IN_P
FLW_IN_N
To μC
470 pF
10 k
470 pF
10 k
Ls
Rs
VRS
VRS +
VRS -
Sensor
FLW_OUT
ECU
SMART
VRS
L9788
GADG0912161108PS



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