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AD7280ABSTZ-RL Datasheet(PDF) 3 Page - Analog Devices

Part # AD7280ABSTZ-RL
Description  Lithium Ion Battery Monitoring System Cell balancing interface
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7280ABSTZ-RL Datasheet(HTML) 3 Page - Analog Devices

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AD7280A
Rev. 0 | Page 3 of 48
SPECIFICATIONS
VDD = 8 V to 30 V, VSS = 0 V, DVCC = AVCC = VREG, VDRIVE = 2.7 V to 5.5 V, TA = −40°C to +105°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DC ACCURACY (VIN0 TO VIN6)1
Resolution
12
Bits
No missing codes
Integral Nonlinearity
±1
LSB
Differential Nonlinearity
±0.8
LSB
Offset Error
±1
LSB
Offset Error Match
1
LSB
Gain Error
±1
LSB
Gain Error Match
1
LSB
ADC Unadjusted Error2, 3
±1.2
mV
Total Unadjusted Error4, 5
±9
mV
VIN range6 = 1 V to 4.1 V, −10°C to +85°C
±10
mV
VIN range6 = 1 V to 4.1 V, −40°C to +85°C
±1.6
±14.5
mV
VIN range6 = 1 V to 4.1 V, −40°C to +105°C
CELL VOLTAGE INPUTS (VIN0 TO VIN6)
Pseudo Differential Input Voltage
VIN(x) − VIN(x − 1)
1
2 × VREF
V
Absolute Input Voltage
VCM − VREF
VCM + VREF
V
Common-Mode Input Voltage
0.5
27.5
V
Static Leakage Current7
±5
±70
nA
Dynamic Leakage Current7
±3
nA
CNVST pulse every 100 ms
Input Capacitance
15
pF
DC ACCURACY (AUX1 TO AUX6)1, 8
Resolution
12
Bits
No missing codes
Integral Nonlinearity
±1
LSB
Differential Nonlinearity
±0.8
LSB
Offset Error
±2
LSB
Offset Error Match
2
LSB
Gain Error
±2
LSB
Gain Error Match
2
LSB
ADC Unadjusted Error9
±1.2
mV
Total Unadjusted Error10
±20
mV
−40°C to +85°C
±1.6
±22
mV
−40°C to +105°C
AUXILIARY ADC INPUTS (AUX1 TO AUX6)
Input Voltage Range
0
2 × VREF
V
Static Leakage Current7
±15
nA
Dynamic Leakage Current7
±3
nA
CNVST pulse every 100 ms
Input Capacitance
15
pF
REFERENCE
Reference Voltage
2.494
2.5
2.506
V
−40°C to +85°C
2.494
2.5
2.509
V
−40°C to +105°C
Reference Voltage Temperature
Coefficient
±3
±15
ppm/°C
−40°C to +85°C
±11
ppm/°C
−40°C to +105°C
Output Voltage Hysteresis
50
ppm
−40°C to +105°C
Long-Term Drift
150
ppm/1000
hours
Line Regulation
±5
ppm/V
Turn-On Settling Time11, 12
5.5
10
ms
VREG = 1 μF, VREF = 1 μF, CREF = 100 nF


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