MAX1403 Maxim, MAX1403 Datasheet - Page 26

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

+3V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
26
Table 15. Modulator Operating Frequency, Sampling Frequency, and 16-Bit Data Output
Rates
Note: Default condition is in bold print.
Table 16a. Noise vs. Gain and Output Data Rate—Unbuffered Mode, V
f
CLKIN
OUTPUT
DATA
RATE
(sps)
1200
1200
2400
2400
4800
X2CLK = 0
DEFAULT
300
600
100
120
600
200
240
400
480
50
60
______________________________________________________________________________________
2.4576
2.4576
2.4576
2.4576
1.024
1.024
1.024
1.024
CLKIN FREQUENCY,
= 2.4576MHz
f
CLKIN
FREQ.
157.2
157.2
314.4
314.4
628.8
104.8
125.7
628.8
-3dB
1258
(Hz)
13.1
15.7
78.6
26.2
31.4
52.4
62.9
(MHz)
X2CLK = 1
4.9152
4.9152
4.9152
4.9152
2.048
2.048
2.048
2.048
5.42
5.91
80.5
5.53
6.06
81.5
5.39
6.27
77.8
5.36
5.88
79.7
441
450
431
441
x1
3.03
3.20
38.6
2.96
3.28
39.9
2.92
3.28
40.1
3.00
3.25
39.6
236
232
232
227
x2
CLK
0
0
0
0
1
1
1
1
FOR VARIOUS PROGRAMMABLE GAINS
1.70
1.90
20.6
1.73
1.90
19.6
1.70
1.89
20.1
1.82
1.94
20.2
112
115
109
111
x4
TYPICAL OUTPUT NOISE (µV
MF1
0
0
1
1
0
0
1
1
1.11
1.25
10.3
54.8
1.13
1.25
10.2
53.4
1.09
1.20
10.0
54.9
1.17
1.28
10.5
55.5
x8
MF0
0
1
0
1
0
1
0
1
1.06
1.13
5.73
29.2
1.06
1.17
5.45
27.8
1.06
1.18
5.53
28.2
1.10
1.26
5.74
29.7
x16
FREQUENCY,
SAMPLING
AIN/REFIN
(kHz)
153.6
307.2
38.4
76.8
128
16
32
64
f
RMS
S
1.05
1.18
3.62
14.5
1.06
1.11
3.49
14.7
1.02
1.14
3.56
14.1
1.06
1.16
3.63
14.6
x32
)
FREQUENCY,
MODULATOR
1.05
1.15
2.84
7.61
1.08
1.12
2.72
8.00
1.02
1.17
2.74
8.08
1.10
1.17
3.02
7.73
x64
153.6
(kHz)
19.2
38.4
76.8
f
16
32
64
8
M
REF
x128
1.04
1.15
2.67
5.13
1.05
1.11
2.59
5.08
1.03
1.11
2.59
4.99
1.11
1.15
2.76
5.43
= 1.25V,
DATA RATES
AVAILABLE
ACCURACY
AT 16-BIT
MF1:MF0 = 0
MF1:MF0 = 1
MF1:MF0 = 2
MF1:MF0 = 3
OUTPUT
160, 200
100, 120
200, 240
400, 480
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
80, 100
20, 25
40, 50
50, 60
(sps)
STATUS
BIT