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L9680 Datasheet(PDF) 264 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) 264 Page - STMicroelectronics

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Electrical characteristics
L9680
264/277
DocID029257 Rev 1
16.19
DC sensor interface
All electrical characteristics are valid for the following conditions unless otherwise noted:
40 °C
 Ta  +95 °C, VINGOOD0  VIN  35 V, 8.5 V  SYNCBOOST  35 V.
Table 65. DC Sensor interface specifications
No
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
1VOUT_DCSREG
DCS output voltage
regulation mode
DCS regulator enabled
-10%
6.25
+10%
V
2ILIM_DCSREG
DCS current limitation
regulation mode
DCS regulator enabled
24
27
30
mA
3VDCS_RANGE1
DCS voltage
measurement range1
First voltage measurement
(VDCS_MEAS1) to compensate
external ground shift and internal
offset
-1
-
1.4
V
4VDCS_ACC1
DCS voltage
measurement accuracy 1
VDCS = VDCS_RANGE1
Included ADC error
-15
-
15
%
5VDCS_RANGE2
DCS voltage
measurement range 2
-
1.5
-
10
V
6VDCS_ACC2
DCS voltage
measurement accuracy 2
VDCS = VDCS_RANGE2
Included ADC error
-8
-
+8
%
7IDCS_RANGE1
DCS Current
measurement range 1
-1
-
2
mA
8IDCS_ACC1
DCS current
measurement accuracy 1
IDCS = IDCS_RANGE1
Included ADC error
-30
-
+30
%
9IDCS_RANGE2
DCS current
measurement range 2
-2
-
22
mA
10
IDCS_ACC2
DCS current
measurement accuracy 2
IDCS = IDCS_RANGE2
Included ADC error
-12
-
+12
%
11
IDCS_RANGE3
DCS current
measurement range 3
Regulator in current limitation
-
ILIM_D
CSREG
-mA
12
IDCS_ACC3
DCS Current
measurement accuracy 3
VDCS = 0V
Included ADC error
-12
-
+12
%
13
RDCS_RANGE
DCS resistance
measurement range
Design info
65
-
3000
Ω
14
RDCS_ACC
Accuracy of digital
resistance measurement
Performing voltage
measurements 1 and 2
After software calculation
all errors included
-15
-
15
%
15
IPD_DCS
DCSx current pull down
VDCS = 1.5 V
130
200
260
μA
16
RPD_DCS
DCSx resistance
pull down
Device active,
DCSx current pull down disabled
90
150
210
kΩ



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