ADS131M04-Q1
ZHCSOL7A –MARCH 2022 –REVISED AUGUST 2022
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6.9 Typical Characteristics (continued)
at TA = 25°C, AVDD = 3 V, DVDD = 3 V, fCLKIN = 8.192 MHz, data rate = 4 kSPS, and gain = 1 with global-chop mode
disabled (unless otherwise noted)
0
-100
-200
-300
-400
-500
-600
0
100
80
60
40
20
0
Humidity (%)
-300
-600
-900
-1200
-1500
0
200
400
Time (Hours)
600
800
1000
0
20
40
Time (Hours)
60
80
18 units, all channels
图6-10. Gain Error vs Time
18 units, all channels
图6-11. Gain Error vs Time Across Humidity
115
110
105
100
95
114
Gain
Gain
4
8
1
2
4
8
16
32
64
1
2
16
32
64
128
110
128
106
102
98
90
94
85
90
-40
-20
0
20
40
60
80
100 120 140
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
Temperature
AVDD Voltage (V)
图6-12. DC CMRR vs Temperature
图6-13. DC CMRR vs AVDD Voltage
110
109
108
107
106
105
104
103
102
101
100
110
109
108
107
106
105
104
103
102
101
100
10
20 30 50 70100 200
500 1000 2000 500010000
2.7
2.8
2.9
3
3.1
3.2
AVDD Voltage (V)
3.3
3.4
3.5
3.6
Frequency (Hz)
ADS1
ADS1
图6-14. AVDD CMRR vs Frequency
图6-15. AC CMRR vs AVDD Voltage
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