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L9680 Datasheet(PDF) 229 Page - STMicroelectronics

Part # L9680
Description  Automotive advanced airbag IC for mid/high end applications
PDF  277 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9680 Datasheet(HTML) 229 Page - STMicroelectronics

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L9680
Electrical characteristics
276
16.2
Internal analog reference
All electrical characteristics are valid for the following conditions unless otherwise noted:
-40 °C ≤ Ta ≤ +95 °C
VINBAD0(min) ≤ VIN ≤ 35 V
Table 22. Open ground detection DC specifications
No
Symbol
Parameter
Conditions / Comments
Min
Typ
Max Unit
1
GNDAOPEN
GNDA open threshold
GNDSUBx=0
100
200
300
mV
2
GNDDOPEN
GNDD open threshold
GNDSUBx=0
100
200
300
mV
3
BSTGNDOPEN BSTGND open threshold
GNDSUBx=0
100
200
300
mV
4IPU_BSTGND
BSTGND pull-up current
ER BOOST OFF and SYNC
BOOST OFF
130
-
270
μA
5
SATGNDOPEN SATGND open threshold
GNDSUBx=0
100
200
300
mV
6IPU_SATGND
SATGND pull-up current
SATBUCK OFF
80
120
160
μA
7
VCCGNDOPEN VCCGND open threshold
GNDSUBx=0
100
200
300
mV
8IPU_VCCGND
VCCGND pull-up current
VCC BUCK OFF
80
120
160
μA
Table 23. GND_OPEN_AC - Open ground detection DC specifications
No
Symbol
Parameter
Condition
Min
Typ
Max Unit
1TFLT_GNDREFOPEN
GNDA and GNDD Open
Deglitch Filter Time
-7
11
16
μs
2TFLT_GNDREGOPEN
BSTGND, SATGND,
VCCGND Open Deglitch
Filter Time
-
1.9
2.3
2.7
μs
Table 24. Internal analog reference
N°
Symbol
Parameter
Condition
Min
Typ
Max
Unit
1VBG1
Bandgap reference
Vin = 5.5 V and 35 V
-1%
1.2
+1%
V
2VBG2
Bandgap monitor
Vin = 5.5 V and 35 V
-1%
1.2
+1%
V
3VADC_GROUND
ADC Ground reference
ADC total error included
90
104
120
mV
4VADC_FULLSCALE ADC Full scale reference -
-1.5%
2.5
+1.5%
V



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