ADS1291
ADS1292
ADS1292R
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SBAS502A –DECEMBER 2011–REVISED MARCH 2012
TYPICAL CHARACTERISTICS (continued)
At TA = +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, CFILTER = 4.7 nF, and gain = 6, unless otherwise noted.
OFFSET vs PGA GAIN
(Absolute Value)
TEST SIGNAL AMPLITUDE ACCURACY
300
250
200
150
100
50
60
40
20
0
Data from 96 devices, Two lots
0
0
2
4
6
8
10
12
PGA Gain (dB)
G013
Error (%)
G014
Figure 14.
Figure 15.
LEAD-OFF CURRENT SOURCE ACCURACY
DISTRIBUTION
LEAD-OFF COMPARATOR THRESHOLD ACCURACY
140
120
100
80
60
40
20
0
Data from 96 devices, Two Lots
Data from 125 devices, Two lots
Current Setting = 24 nA
120
100
80
60
40
20
0
Threshold Error (mV)
Error in Current Magnitude (nA)
G015
G016
Figure 16.
Figure 17.
Copyright © 2011–2012, Texas Instruments Incorporated
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