Datasheet

−10
−8 −6 −4 −2
0 2 4 6 8
10 12
−10
−8 −6 −4 −2
0 2 4 6 8
10 12
0
20
40
60
80
100
120
140
Threshold Error (mV)
Number of Bins
Data from 96 devices, Two Lots
G015
−2
−1.5
−1
−0.5
0
0.5
1
1.5
2
2.5
−2
−1.5
−1
−0.5
0
0.5
1
1.5
2
2.5
0
20
40
60
80
100
120
Error in Current Magnitude (nA)
Number of Bins
Data from 125 devices, Two lots
Current Setting = 24 nA
G016
−0.5 −0.4 −0.3 −0.2 −0.1
0
0.1 0.2 0.3 0.4 0.5 0.6
−0.5 −0.4 −0.3 −0.2 −0.1
0
0.1 0.2 0.3 0.4 0.5 0.6
0
20
40
60
Error (%)
Number of Bins
Data from 96 devices, Two lots
G014
0
50
100
150
200
250
300
0 2 4 6 8 10 12
PGA Gain (dB)
Offset (uV)
G013
ADS1291
ADS1292
ADS1292R
www.ti.com SBAS502B –DECEMBER 2011–REVISED SEPTEMBER 2012
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, AVDD = 3 V, AVSS = 0 V, DVDD = 1.8 V, internal VREFP = 2.42 V, VREFN = AVSS, external clock =
512 kHz, data rate = 500 SPS, C
FILTER
= 4.7 nF, and gain = 6, unless otherwise noted.
OFFSET vs PGA GAIN
(Absolute Value) TEST SIGNAL AMPLITUDE ACCURACY
Figure 14. Figure 15.
LEAD-OFF COMPARATOR THRESHOLD ACCURACY LEAD-OFF CURRENT SOURCE ACCURACY DISTRIBUTION
Figure 16. Figure 17.
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