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ADUC7039 Arkusz danych(PDF) 4 Page - Analog Devices

Numer części ADUC7039
Szczegółowy opis  Integrated, Precision Battery Sensor for Automotive Systems
Download  88 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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ADUC7039 Arkusz danych(HTML) 4 Page - Analog Devices

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ADuC7039
Rev. 0 | Page 4 of 88
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
ADC SPECIFICATIONS, ANALOG INPUT
Current Channel
Absolute Input Voltage Range1
Applies to both IIN+ and IIN−
−200
+300
mV
Input Voltage Range11, 12
Gain = 4
±300
mV
Gain = 8
±150
mV
Gain = 32
±37.5
mV
Gain = 512
±2.3
mV
Input Leakage Current1
−3
+3
nA
Input Offset Current1, 13
0.5
1.5
nA
Voltage Channel
Absolute Input Voltage Range1
Voltage ADC specifications are valid in this range
4
18
V
Input Voltage Range1
0 to 28.8
V
VBAT Input Current
VBAT = 18 V
3
5.5
8
μA
Temperature Channel
VREF = (REG_AVDD, GND_SW)/2
Absolute Input Voltage
Range14
100
1300
mV
Input Voltage Range1
0 to VREF
V
VTEMP Input Current1
2.5
100
nA
VOLTAGE REFERENCE
Internal VREF
1.2
V
Power-Up Time1
0.5
ms
Initial Accuracy1
Measured at TA = 25°C
−0.15
+0.15
%
Temperature Coefficient1, 15
−20
±5
+20
ppm/°C
Long-Term Stability16
100
ppm/1000 hr
ADC DIAGNOSTICS
VREF/136 Accuracy1
At any gain setting
8.4
9.4
mV
Voltage Attenuator Current
Differential voltage increase on the attenuator when current is on
2.3
3.6
V
Source Accuracy1
RESISTIVE ATTENUATOR1
Divider Ratio
24
Resistor Mismatch Drift
Included in the voltage channel total gain error
±3
ppm/°C
ADC GROUND SWITCH
Resistor to Ground
15
20
30
TEMPERATURE SENSOR17
Uncalibrated
Accuracy
MCU in power down or standby mode; TA = −40°C to +85°C
−10
±3
+10
°C
MCU in power down or standby mode; TA = −20°C to +60°C
−8
±2
+8
ºC
Calibrated − ADC2GN = 0x968A;
MCU in power down or standby mode
−4
±2
+4
°C
POWER-ON RESET (POR) 1
POR Trip Level
Refers to voltage at the VDD pin
2.85
3.0
3.15
V
POR Hysteresis
300
mV
Reset Timeout from POR
20
ms
LOW VOLTAGE FLAG(LVF)
LVF Level
Refers to voltage at the VDD pin
1.9
2.1
2.3
V
WATCHDOG TIMER (WDT)
Timeout Period1
32 kHz clock, 256 prescale
0.008
524
Seconds
Timeout Step Size
7.8
ms
FLASH/EE MEMORY1
Endurance18
10,000
Cycles
Data Retention19
20
Years
DIGITAL INPUTS1
All digital inputs except NTRST
Input Leakage Current
Input (high) = REG_DVDD
±1
±10
μA
Input Pull-Up Current1
Input (low) = 0 V
10
20
80
μA
Input Capacitance1
10
pF
Input Leakage Current
NTRST only; input (low) = 0 V
±1
±10
μA
Input Pull-Down Current
NTRST only; input (high) = REG_DVDD
30
55
100
μA


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