ADS1115-Q1
SBAS563 –DECEMBER 2011
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TYPICAL CHARACTERISTICS (continued)
At TA = +25°C and VDD = 3.3V, unless otherwise noted.
NOISE vs INPUT SIGNAL
NOISE vs SUPPLY VOLTAGE
12
35
30
25
20
15
10
5
FS = ±0.512V
FS = ±2.048V
10
860SPS
8
DR = 860SPS
6
DR = 128SPS
128SPS
4
DR = 8SPS
2
0
8SPS
2.5
0
-0.5 -0.4 -0.3 -0.2 -0.1
0
0.1 0.2 0.3 0.4 0.5
2.0
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
Supply Voltage (V)
Figure 14.
Figure 15.
NOISE vs TEMPERATURE
GAIN ERROR HISTOGRAM
30
25
20
15
10
5
10
9
8
7
6
5
4
3
2
1
0
185 Units From a Production Lot
FS = ±2.048V
FS = ±2.048V
Data Rate = 8SPS
0
-40 -20
0
20
40
60
80
100 120 140
Temperature (°C)
Gain Error (%)
Figure 16.
Figure 17.
TOTAL ERROR vs INPUT SIGNAL
OFFSET HISTOGRAM
160
140
120
100
80
4
3
2
1
0
185 Units From a
Production Lot
FS = ±2.048V
Includes noise, offset, and gain error.
60
-1
40
-2
-3
-4
FS = ±2.048V
20
Data Rate = 860SPS
Differential Inputs
0
-3
-2
-1
0
1
2
3
-2.048
-1.024
0
1.024
2.048
Offset (LSBs)
Input Signal (V)
Figure 18.
Figure 19.
8
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