
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
10
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Table 1. MAX1415—Output RMS Noise vs. Gain and Output Data Rate (3V)
TYPICAL OUTPUT RMS NOISE (V)
GAIN
FILTER FIRST NOTCH
AND OUTPUT DATA
RATE (Hz)
-3dB FREQUENCY
(Hz)
1
2
4
8
16
32
64
128
BUFFERED (fCLKIN = 1MHz)
20
5.24
2.85
1.63
2.16
0.70
0.67
0.63
0.64
0.62
25
6.55
3.46
1.92
1.13
6.05
0.75
0.73
0.70
100
26.2
48.94
26.98
11.99
0.85
3.44
2.27
1.66
1.72
200
52.4
270.91
161.33
66.19
32.64
16.89
8.34
4.98
4.86
UNBUFFERED (fCLKIN = 1MHz)
20
5.24
3.09
1.70
1.05
0.72
0.66
0.64
0.60
25
6.55
3.58
1.94
1.23
0.80
0.77
0.73
0.70
100
26.2
51.92
24.54
11.47
6.14
3.26
2.16
1.67
1.64
200
52.4
263.86
136.78
65.40
34.51
16.64
8.97
4.96
4.80
BUFFERED (fCLKIN = 2.4576MHz)
50
13.1
3.03
1.97
1.34
1.01
0.95
0.93
0.96
0.95
60
15.72
3.62
2.14
1.52
1.05
0.98
1.03
1.04
1.00
250
65.5
51.02
25.44
12.95
6.19
3.84
2.70
2.35
2.23
500
131
280.58
138.29
70.21
34.60
18.44
9.45
5.40
5.34
UNBUFFERED (fCLKIN = 2.4576MHz)
50
13.1
3.76
1.63
0.96
0.69
0.66
0.64
0.59
0.61
60
15.72
3.11
1.86
1.12
0.78
0.75
0.71
0.69
250
65.5
48.28
25.13
12.75
6.18
3.32
2.12
1.59
1.62
500
131
280.67
143.15
75.84
34.70
17.88
9.19
4.90
4.98