MAX1403 Maxim, MAX1403 Datasheet - Page 27

• Manufacturer Part Number: MAX1403
• Description: +3V / 18-Bit / Low-Power / Multichannel / Oversampling Sigma-Delta ADC
• Manufacturer: Maxim

Figure 7. Effective Resolution vs. Gain and Notch Frequency
Table 16b. Noise vs. Gain and Output Data Rate—Buffered Mode, V
f
CLKIN
OUTPUT
DATA
RATE
(sps)
1200
1200
2400
2400
4800
300
600
100
120
600
200
240
400
480
50
60
a) BUFF = 0
= 2.4576MHz
FREQ.
157.2
157.2
314.4
314.4
628.8
104.8
125.7
628.8
20
19
18
17
16
15
14
13
12
11
10
-3dB
1258
(Hz)
13.1
15.7
78.6
26.2
31.4
52.4
62.9
1
______________________________________________________________________________________
FS1: FS0 = 3
FS1: FS0 = 2
2
4
5.72
6.29
80.6
5.82
6.01
77.7
5.82
6.17
79.0
5.60
6.18
76.3
436
434
439
455
+3V, 18-Bit, Low-Power, Multichannel,
x1
8
GAIN (V/V)
16
3.21
3.57
39.8
3.35
3.65
40.1
3.07
3.54
41.1
3.10
3.47
39.3
225
222
226
225
FS1: FS0 = 0 OR 1
32
x2
Oversampling (Sigma-Delta) ADC
64
CLK = 1
BUFF = 0
CLK = 1
128 256
FOR VARIOUS PROGRAMMABLE GAINS
2.10
2.30
19.3
2.08
2.27
20.2
1.87
2.09
19.8
1.85
2.02
20.8
116
111
111
114
x4
TYPICAL OUTPUT NOISE (µV
1.41
1.55
10.2
57.1
1.43
1.51
10.6
57.0
1.26
1.45
10.5
57.9
1.32
1.38
9.83
57.1
x8
1.42
1.61
6.14
28.8
1.37
1.51
5.93
28.3
1.20
1.30
5.68
28.7
1.24
1.37
5.92
29.9
x16
b) BUFF = 1
RMS
1.44
1.56
4.25
15.0
1.36
1.50
4.19
14.8
1.18
1.27
3.68
15.4
1.25
1.29
3.92
14.5
x32
20
19
18
17
16
15
14
13
12
11
10
)
1
FS1: FS0 = 2
2
FS1: FS0 = 3
1.38
1.49
3.03
8.70
1.35
1.50
3.54
8.37
1.15
1.31
3.14
8.26
1.19
1.33
3.92
8.13
x64
4
REF
8
GAIN (V/V)
16
x128
1.34
1.56
3.52
5.99
1.31
1.47
3.23
5.81
1.17
1.29
2.99
5.32
1.21
1.33
3.07
5.55
FS1: FS0 = 0 OR 1
= 1.25V,
32
CLK = 1
BUFF = 1
64
MF1:MF0 = 0
MF1:MF0 = 1
MF1:MF0 = 2
MF1:MF0 = 3
FS1:FS0 = 0
FS1:FS0 = 1
FS1:FS0 = 2
FS1:FS0 = 3
FS1:FS0 = 0
FS1:FS0 = 1
FS1:FS0 = 2
FS1:FS0 = 3
FS1:FS0 = 0
FS1:FS0 = 1
FS1:FS0 = 2
FS1:FS0 = 3
FS1:FS0 = 0
FS1:FS0 = 1
FS1:FS0 = 2
FS1:FS0 = 3
128
STATUS
BIT
256
27