hi7191 Intersil Corporation, hi7191 Datasheet - Page 8

• Manufacturer Part Number: hi7191
• Description: 24-bit, High Precision, Sigma Delta A/d Converter
• Manufacturer: Intersil Corporation

GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
HERTZ
1000
2000
1000
2000
1000
2000
1000
2000
100
250
500
100
250
500
100
250
500
100
250
500
10
25
30
50
60
10
25
30
50
60
10
25
30
50
60
10
25
30
50
60
132.3
129.5
127.7
126.3
125.6
122.4
107.7
129.2
125.7
124.5
123.4
122.5
106.1
125.9
123.1
121.8
105.7
124.7
120.6
101.4
118.1
119.9
119.9
116.1
119.2
117.5
116.8
112.1
SNR
98.1
85.7
68.8
96.9
84.4
67.8
96.6
84.3
68.2
95.3
83.1
68.3
TABLE 1. NOISE PERFORMANCE WITH INPUT CONNECTED TO ANALOG GROUND
ENOB
21.7
21.2
20.9
20.7
20.6
20.0
17.6
16.0
13.9
21.2
20.6
20.4
20.2
20.1
19.3
17.3
15.8
13.7
20.6
20.1
19.9
19.6
19.6
19.0
17.3
15.8
13.7
20.4
19.7
19.5
19.2
19.1
18.3
16.5
15.5
13.5
11.1
11.0
11.0
11.1
8
P-P NOISE
14661.6
16469.7
15656.1
15494.7
2101.8
2435.6
2469.5
2838.6
166.7
505.3
199.5
580.1
209.7
597.8
100.0
345.2
691.1
(μV)
13.6
16.6
19.5
21.2
30.7
14.0
20.9
24.1
27.3
30.3
50.0
20.5
28.4
32.8
40.9
40.9
63.2
23.4
37.8
44.3
53.8
58.6
9.8
RMS NOISE
2221.4
2495.4
2372.1
2347.7
318.5
369.0
374.2
104.7
430.1
(μV)
25.3
76.6
30.2
87.9
31.8
90.6
15.2
52.3
1.5
2.1
2.5
3.0
3.2
4.6
2.1
3.2
3.7
4.1
4.6
7.6
3.1
4.3
5.0
6.2
6.2
9.6
3.5
5.7
6.7
8.2
8.9
HI7191
GAIN = 16
GAIN = 32
GAIN = 64
GAIN = 128
HERTZ
1000
2000
1000
2000
1000
2000
1000
2000
100
250
500
100
250
500
100
250
500
100
250
500
10
25
30
50
60
10
25
30
50
60
10
25
30
50
60
10
25
30
50
60
120.1
114.8
113.5
109.6
105.5
113.2
109.0
108.2
104.7
105.0
102.3
106.7
102.9
101.9
101.1
111.0
SNR
95.2
89.1
83.5
62.6
93.4
87.1
78.2
57.0
98.5
98.9
96.3
85.5
78.1
66.7
50.5
96.0
95.2
93.2
92.2
91.4
79.4
71.8
60.1
44.8
ENOB
15.5
14.5
13.6
10.1
15.2
14.2
12.7
13.9
12.7
10.8
14.9
12.9
19.7
18.8
18.6
18.1
17.9
17.2
18.5
17.8
17.7
17.1
17.1
16.7
17.4
16.8
16.6
16.1
16.1
15.7
16.5
15.7
15.5
15.2
15.0
11.6
9.2
8.1
9.7
7.1
P-P NOISE
120163.0
233238.2
18693.5
10439.2
39923.0
30110.0
57311.1
1417.7
2686.0
1782.7
4990.4
2133.5
5025.0
1086.6
4346.4
114.4
134.0
214.8
699.1
142.7
157.4
235.8
227.8
310.5
861.1
186.2
288.4
325.8
479.8
459.8
620.2
356.5
638.3
704.8
882.2
996.7
(μV)
39.8
73.4
85.1
88.8
RMS NOISE
18206.5
35339.1
4562.1
8683.5
2832.3
1581.7
6048.9
105.9
214.8
407.0
130.5
270.1
756.1
323.3
761.4
106.8
133.7
151.0
164.6
658.5
June 1, 2006
(μV)
11.1
12.9
17.3
20.3
32.5
13.5
21.6
23.8
35.7
34.5
47.0
28.2
43.7
49.4
72.7
69.7
94.0
54.0
96.7
6.0
FN4138.8