Datasheet

0
25
50
75
100
125
150
−20 −15 −10 −5 0 5 10 15 20
Input Voltage (mV)
RMS Noise (nV)
Data Rate = 10SPS
0
25
50
75
100
125
150
−20 −15 −10 −5 0 5 10 15 20
Input Voltage (mV)
RMS Noise (nV)
Data Rate = 80SPS
−40−35−30−25−20−15−10 −5 0 5 10 15 20 25 30 35 40
0
50
100
150
200
250
300
350
400
450
500
−40−35−30−25−20−15−10 −5 0 5 10 15 20 25 30 35 40
24−bit LSBs
# of Occurrences
Data Rate = 10SPS
−40−35−30−25−20−15−10 −5 0 5 10 15 20 25 30 35 40
0
25
50
75
100
125
150
175
200
225
250
−40−35−30−25−20−15−10 −5 0 5 10 15 20 25 30 35 40
24−bit LSBs
# of Occurrences
Data Rate = 80SPS
−300
−250
−200
−150
−100
−50
0
50
100
150
200
250
300
0 200 400 600 800 1000
Time (Reading Number)
Conversion Data (nV)
Data Rate = 10SPS
−300
−250
−200
−150
−100
−50
0
50
100
150
200
250
300
0 200 400 600 800 1000
Time (Reading Number)
Conversion Data (nV)
Data Rate = 80SPS
ADS1231
www.ti.com SBAS414D –JULY 2009–REVISED OCTOBER 2013
TYPICAL CHARACTERISTICS
At T
A
= +25°C, AVDD = DVDD = REFP = 5V, REFN = GND, and V
CM
= 2.5V unless otherwise noted.
NOISE vs TIME NOISE vs TIME
Figure 1. Figure 2.
NOISE HISTOGRAM NOISE HISTOGRAM
Figure 3. Figure 4.
NOISE vs INPUT VOLTAGE NOISE vs INPUT VOLTAGE
Figure 5. Figure 6.
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