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LTC2943 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC2943
Description  Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2943 Datasheet(HTML) 3 Page - Linear Technology

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LTC2943
3
2943fa
For more information www.linear.com/LTC2943
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TCE
Total Charge Error (Note 5)
10mV ≤ |VSENSE| ≤ 50mV DC
10mV ≤ |VSENSE| ≤ 50mV DC
1mV ≤ |VSENSE| ≤ 10mV DC (Note 8)
l
l
±1
±1.5
±3.5
%
%
%
VOSE
Effective Differential Offset Voltage
(Note 9)
VSENSE ≥ 500µV, VSENSE+ = 10V
l
5
10
µV
Voltage Measurement ADC
Resolution (No Missing Codes)
(Note 8)
l
14
Bits
VFS(V)
Full-Scale Voltage Conversion
23.6
V
ΔVLSB
Quantization Step of 14-Bit Voltage
ADC
(Note 6)
1.44
mV
TUEV
Voltage Total Unadjusted Error
l
1
1.3
%
%
GainV
Voltage Gain Accuracy
l
1.3
%
INLV
Integral Nonlinearity
VSENSE+ > 5V
l
±1
±4
LSB
3.6V ≤ VSENSE+ ≤ 5V
l
±8
LSB
TCONV(V)
Voltage Conversion Time
l
48
ms
Current Measurement ADC
Resolution (No Missing Codes)
(Note 8)
l
12
Bits
VFS(I)
Full-Scale Current Conversion
l
±60
mV
VSENSE
Sense Voltage Differential Input
Range
VSENSE+ – VSENSE–
l
±50
mV
ΔILSB
Quantization Step of 12-Bit Current
ADC
(Note 6)
29.3
µV
GainI
Current Gain Accuracy
l
1
1.3
%
%
VOS(I)
Offset
±1
±10
LSB
INLI
Integral Nonlinearity
l
±1
±4
LSB
TCONV(I)
Current Conversion Time
l
8
ms
Temperature Measurement ADC
Resolution (No Missing Codes)
(Note 8)
l
11
Bits
TFS
Full-Scale Temperature
510
K
ΔTLSB
Quantization Step of 11-Bit
Temperature ADC
(Note 6)
0.25
K
TUET
Temperature Total Unadjusted Error VSENSE+ ≥ 5V
(Note 8)
l
±3
±5
K
K
TCONV(T)
Temperature Conversion Time
l
8
ms
Digital Inputs and Digital Outputs
VITH(HV)
Logic Input Threshold
VSENSE+ ≥ 5V
l
0.8
2.2
V
VITH(LV)
3.6V < VSENSE+ < 5V
0.5
1.8
V
VOL
Low Level Output Voltage, ALCC,
SDA
I = 3mA, VSENSE+ ≥ 5V
l
0.4
V
IIN
Input Leakage, ALCC, SCL, SDA
VIN = 5V
l
1
µA
CIN
Input Capacitance, ALCC, SCL, SDA (Note 8)
l
10
pF


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