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AD7280 Datasheet(PDF) 2 Page - Analog Devices

Part # AD7280
Description  Lithium Ion Battery Monitoring System
Download  33 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7280 Datasheet(HTML) 2 Page - Analog Devices

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AD7280
Preliminary Technical Data
Rev. PrD | Page 2 of 33
SPECIFICATIONS
VDD = 7.5 V to 30 V, VSS = 0 V, DVCC = AVCC = VREG, VDRIVE = 2.7 V to 5.25 V, TA = -40oC to 105oC, unless otherwise noted
Table 1.
Parameter1
Min
Typ
Max
Unit
Test Conditions/Comments
DC ACCURACY [Vin(0) to Vin(6)]2
Resolution
12
Bits
No Missing Codes
Integral Nonlinearity
±1
LSB
Differential Nonlinearity
±1
LSB
Offset Error
1
LSB
Offset Error Drift
3
ppm/oC
Offset Error Match
1
LSB
Gain Error
1
LSB
Gain Error Drift
2
ppm/oC
Gain Error Match
1
LSB
ADC Unadjusted Error3
0.05
0.1
%
-40oC to 85oC
0.08
0.3
%
-40oC to 105oC
Total Unadjusted Error4
0.07
0.2
%
-40oC to 85oC
0.1
0.5
%
-40oC to 105oC
ANALOG INPUTS [Vin(0) to
Vin(6)]
Pseudo Differential Input
Voltage
Vin(n) – Vin(n-1)
1V
2VREF
V
Absolute Input Voltage
VCM - VREF
VCM +
VREF
V
Common Mode Input Voltage
0.5
27.5
V
DC Leakage Current
±70
nA
CNVST pulse every 100ms
Input Capacitance
15
pF
When in track
3
pF
When in hold
DC ACCURACY [VT1 to VT6]2
Resolution
12
Bits
No Missing Codes
Integral Nonlinearity
±1
LSB
Differential Nonlinearity
±1
LSB
Offset Error
2
LSB
Offset Error Drift
2
ppm/oC
Offset Error Match
2
LSB
Gain Error
2
LSB
Gain Error Drift
1.2
ppm/oC
Gain Error Match
2
LSB
ADC Unadjusted Error5
0.1
0.2
%
-40oC to 85oC
0.16
0.6
%
-40oC to 105oC
Total Unadjusted Error6
0.15
0.4
%
-40oC to 85oC
0.2
1
%
-40oC to 105oC
ANALOG INPUTS (VT1 to VT6)
Input Voltage Range
0
2VREF
V
Leakage Current
±70
nA
CNVST pulse every 100ms
Input Capacitance
15
pF
When in track
3
pF
When in hold
DYNAMIC PERFORMANCE
Common Mode Rejection Ratio
[CMRR]
-75
dB
Up to 10kHz ripple frequency


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