ISL26102 Datasheet, PDF (6/21 Pages) Intersil Corporation – Low-Noise 24-bit Delta Sigma ADC

ISL26102, ISL26104
TABLE 1. INPUT REFERRED NOISE (nV, RMS)
OUTPUT WORD RATE
(Note 10)
PGA GAIN
1
2
4
8
16
32
2.5
187.1
101.8
52.0
25.0
14.5
8.8
5
209.2
112.2
55.9
28.5
16.3
10.5
10
253.6
133.0
63.8
35.5
20.0
13.9
20
308.3
157.7
77.6
43.8
25.0
18.1
40
417.7
207.1
105.1
60.2
35.1
25.3
80
547.2
264.6
140.1
78.2
46.8
34.9
100
607.0
292.7
159.4
87.5
52.2
39.7
160
780.3
368.2
203.0
110.6
68.0
52.3
200
845.1
405.5
222.2
119.7
74.2
57.3
320
1030.6
517.0
284.5
147.2
93.2
72.5
400
1169.0
591.7
318.1
165.3
105.2
81.9
640
1476.0
756.0
398.0
211.0
129.7
102.4
800
1632.0
857.9
445.0
237.2
139.5
114.7
1000
1806.1
958.6
489.5
267.0
157.8
126.8
1280
2018.0
1089.0
557.0
297.6
180.2
143.7
1600
2289.0
1234.0
632.0
328.0
202.3
163.4
2000
2572.5
1380.4
708.8
365.8
230.2
176.0
2560
2945.0
1538.0
801.0
423.7
259.0
201.0
3200
3287.0
1711.0
891.0
478.0
285.0
221.0
4000
3708.2
1876.9
955.1
545.1
316.6
242.8
NOTE:
10. The ADC has a programmable SINC⁴ filter. The -3dB bandwidth of the filter for a given word rate is 0.239 x OWR.
10000
64
6.6
8.4
11.9
15.7
23.3
31.6
35.4
46.2
50.6
64.1
72.6
90.2
101.0
112.4
124.3
134.0
147.6
162.3
178.0
196.0
128
6.5
8.2
11.6
15.2
22.4
30.1
34.3
45.2
49.5
62.5
70.5
87.4
98.9
107.7
123.5
132.0
145.8
161.3
174.3
194.9
1000
1X
100 2X
4X
8X
10
16X
32X
64X
128X
1
1
10
100
1000
10000
WORD RATE (Sps)
FIGURE 2. NOISE vs GAIN AND WORD RATE SETTINGS
6
FN7608.0
October 12, 2012