LTC2942I(RevA) 查看數據表（PDF） - Linear Technology
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LTC2942I Datasheet PDF : 18 Pages
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LTC2942
Typical Performance Characteristics
Total Charge Error vs Differential
Sense Voltage
3
2
1
0
–1
–2
–3
0.1
VSENSE+ = 2.7V
VSENSE+ = 4.2V
1
10
VSENSE (mV)
100
2942 G01
Supply Current vs Supply Voltage
100
TA = 25°C
TA = –40°C
90
TA = 85°C
80
Total Charge Error
vs Supply Voltage
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
2.5 3.0
VSENSE = –50mV
VSENSE = –10mV
3.5 4.0 4.5 5.0 5.5 6.0
VSENSE+ (V)
2942 G02
Shutdown Supply Current
vs Supply Voltage
2.0
1.5
70
1.0
60
50
40
2.5 3.0
3.5 4.0 4.5 5.0
VSENSE+ (V)
5.5 6.0
2942 G04
0.5
TA = 25°C
TA = –40°C
TA = 85°C
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VSENSE+ (V)
2942 G05
Total Charge Error vs Temperature
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
–50 –25
VSENSE = –50mV
VSENSE = –10mV
0 25 50 75 100
TEMPERATURE (°C)
2942 G03
Voltage Measurement ADC
Total Unadjusted Error
10
8
6
4
TA = 85°C
2
0
–2
TA = –45°C
–4
–6
TA = 25°C
–8
–10
2.5 3.0
3.5 4.0 4.5 5.0
VSENSE– (V)
5.5 6.0
2942 G06
Voltage Measurement ADC
Integral Nonlinearity
1.0
TA = 85°C
0.5
Temperature Error vs Temperature
3
2
1
0
0
TA = –40°C
–0.5
TA = 25°C
–1
–2
–1.0
2.5 3.0
3.5 4.0 4.5 5.0
VSENSE– (V)
5.5 6.0
2942 G07
–3
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
2942 G08
2942fa
5
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