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ADUCM330WFS Datasheet(Fiches technique) 7 Page - Analog Devices

Numéro de pièce ADUCM330WFS
Description  Integrated, Precision Battery Sensor for Automotive Systems
Télécharger  17 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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Data Sheet
ADuCM330WFS/ADuCM331WFS
Rev. A | Page 7 of 17
TA = −40°C to +115°C
TA = +115°C to +125°C1
Parameter
Test Conditions/Comments
Min
Typ
Max
Min
Typ
Max
Unit
VOLTAGE REFERENCE
Internal Reference
1.2
1.2
V
Power-Up Time1
0.5
0.5
ms
Initial Accuracy1
Measured at TA = 25°C
−0.15
+0.15
%
Temperature
Coefficient1,16
−20
±5
+20
±8
ppm/°C
Long-Term Stability17
100
ppm/
1000 Hr
RESISTIVE ATTENUATOR
Divider Ratio
24
Resistor Mismatch Drift
Implicit in the voltage channel gain error
specification
±3
ppm/°C
ADC GROUND SWITCH
Resistor to Ground
45
60
75
TEMPERATURE SENSOR1,18
Processor in hibernate mode
Accuracy
TA = 115°C to 125°C
−3.5
±1
+3.5
±1
°C
TA = −40°C to +115°C
−3
±1
+3
°C
TA = −25°C to +85°C
−2.5
±0.5
+2.5
°C
TA = −10°C to +55°C
−2
±0.5
+2
°C
ADC DIAGNOSTICS1
AVDD18/136
Accuracy2,19
At any gain setting
12
14
13
mV
Current Channel
Diagnostic Current
35
50
65
µA
Diagnostic Current
Matching
−5
±0.5
+5
µA
Internal Electrostatic
Discharge (ESD)
Resistor Matching
−120
+120
Ω
Voltage Channel
Input Test Voltage
(VBE)
525
700
875
mV
Voltage Attenuator
Current Source
Accuracy
Differential voltage increase on the
attenuator when current is on
2.4
3.2
2.8
V
Diagnostic Attenuator
Divider Ratio
48
POWER-ON RESET (POR)1
Refers to voltage at the VDD pin
POR Trip Level
2.8
3.1
3.4
3.3
V
POR Hysteresis
0.1
V
LOW VOLTAGE FLAG
Low Voltage Flag Level
Refers to voltage at the VDD pin
2.6
2.75
3.00
V
WATCHDOG TIMER
Shortest Timeout
Period
32,768 Hz clock with a prescaler of 1
30.5
30.5
µs
Longest Timeout
Period
32,768 Hz clock with a prescaler of 4096
8192
8192
sec
SRAM SIZE
10
kB




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