ADS131B04-Q1
ZHCSMK3B –NOVEMBER 2020 –REVISED NOVEMBER 2021
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6.9 Typical Characteristics
at TA = 25°C, AVDD = 3.3 V, DVDD = 3.3 V, fCLKIN = 8.192 MHz, data rate = 4 kSPS, and gain = 1 (unless otherwise noted)
300
200
100
0
4
3
Channel 0
Channel 1
Channel 2
Channel 3
2
1
0
-1
-2
-3
-4
-100
-200
-300
Channel 0
Channel 1
Channel 2
Channel 3
-40
-20
0
20
40 60
Temperature (°C)
80
100 120 140
-40
-20
0
20
40 60
Temperature (°C)
80
100 120 140
Gain = 8, global-chop mode disabled
图6-4. Offset Error vs Temperature
Gain = 8, global-chop mode enabled
图6-5. Offset Error vs Temperature
300
200
100
0
4
3
Gain = 1
Gain = 4
Gain = 8
Gain = 16
2
1
0
-1
-2
-3
-4
-100
-200
-300
Gain = 1
Gain = 4
Gain = 8
Gain = 16
-40
-20
0
20
40 60
Temperature (°C)
80
100 120 140
-40
-20
0
20
40 60
Temperature (°C)
80
100 120 140
Global-chop mode disabled
图6-6. Offset Error vs Temperature
Global-chop mode enabled
图6-7. Offset Error vs Temperature
0
-50
0.5
0.4
0.3
0.2
0.1
0
Gain = 1
Gain = 4
Gain = 8
Gain = 16
-100
-150
-200
-250
-0.1
-0.2
-0.3
-0.4
-0.5
0
100 200 300 400 500 600 700 800 900 1000
Time (hours)
-40
-20
0
20
40 60
Temperature (°C)
80
100 120 140
Gain = 1, including error of internal voltage reference
Including error of internal voltage reference
图6-9. Gain Error Long-Term Drift
图6-8. Gain Error vs Temperature
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