6.9 Typical Characteristics
at T
A
= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, f
CLKIN
= 8.192 MHz, data rate = 4 kSPS, and gain = 1 (unless otherwise noted)
Temperature (°C)
Offset Error (input referred) (PV)
-40 -20 0 20 40 60 80 100 120 140
-300
-200
-100
0
100
200
300
Channel 0
Channel 1
Channel 2
Channel 3
Gain = 8, global-chop mode disabled
Figure 6-4. Offset Error vs Temperature
Temperature (°C)
Offset Error (input referred) (PV)
-40 -20 0 20 40 60 80 100 120 140
-4
-3
-2
-1
0
1
2
3
4
Channel 0
Channel 1
Channel 2
Channel 3
Gain = 8, global-chop mode enabled
Figure 6-5. Offset Error vs Temperature
Temperature (°C)
Offset Error (input referred) (PV)
-40 -20 0 20 40 60 80 100 120 140
-300
-200
-100
0
100
200
300
Gain = 1
Gain = 4
Gain = 8
Gain = 16
Global-chop mode disabled
Figure 6-6. Offset Error vs Temperature
Temperature (°C)
Offset Error (input referred) (PV)
-40 -20 0 20 40 60 80 100 120 140
-4
-3
-2
-1
0
1
2
3
4
Gain = 1
Gain = 4
Gain = 8
Gain = 16
Global-chop mode enabled
Figure 6-7. Offset Error vs Temperature
Temperature (°C)
Gain Error (%)
-40 -20 0 20 40 60 80 100 120 140
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Gain = 1
Gain = 4
Gain = 8
Gain = 16
Including error of internal voltage reference
Figure 6-8. Gain Error vs Temperature
Time (hours)
Gain Error (ppm)
0 100 200 300 400 500 600 700 800 900 1000
-250
-200
-150
-100
-50
0
Gain = 1, including error of internal voltage reference
Figure 6-9. Gain Error Long-Term Drift
ADS130B04-Q1
SBASAD2 – NOVEMBER 2021
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