MAX1400 Maxim, MAX1400 Datasheet - Page 24

• Manufacturer Part Number: MAX1400
• Description: %V / 18-Bit / Low-Power / Multichannel / Oversampling Sigma-Delta ADC
• Manufacturer: Maxim

+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
Table 15. Modulator Operating Frequency, Sampling Frequency, and 16-Bit Data
Output Rates
Default condition is in bold print.
Table 16a. MAX1400 Noise vs. Gain and Output Data Rate—Unbuffered Mode,
V
24
OUTPUT
REF
DATA
RATE
(sps)
1200
1200
2400
2400
4800
300
600
100
120
600
200
240
400
480
X2CLK = 0
DEFAULT
50
60
______________________________________________________________________________________
FREQ.
f
2.4576
2.4576
2.4576
2.4576
MCLK
(MHz)
1.024
1.024
1.024
1.024
CLKIN
= 2.5V, f
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
CLKIN
X2CLK = 1
147.60
844.82
138.79
836.32
141.69
816.66
150.09
820.73
FREQ.
4.9152
4.9152
4.9152
4.9152
MCLK
f
(MHz)
2.048
2.048
2.048
2.048
CLKIN
6.20
7.23
6.98
7.91
6.25
7.00
6.87
8.15
x1
= 2.4576MHz
417.07
405.49
399.44
419.17
70.73
73.86
71.25
69.17
3.27
3.94
3.61
3.93
4.00
4.16
3.50
3.84
x2
CLK
0
0
0
0
1
1
1
1
216.88
203.35
200.51
203.74
35.10
37.69
35.91
36.54
2.02
2.21
1.94
2.14
1.96
2.04
2.06
2.36
TYPICAL OUTPUT NOISE IN µV
x4
MF1
PROGRAMMABLE GAIN
0
0
1
1
0
0
1
1
107.06
103.04
103.78
17.91
19.19
99.75
18.11
18.92
1.25
1.36
1.24
1.36
1.26
1.34
1.31
1.44
x8
MF0
0
1
0
1
0
1
0
1
50.91
52.38
51.17
51.42
1.13
1.20
9.57
1.10
1.17
9.34
1.07
1.15
9.45
1.16
1.28
9.67
x16
SAMPLING
AIN/REFIN
FREQ.
(kHz)
153.6
307.2
38.4
76.8
128
16
32
64
f
26.25
24.50
26.57
26.47
S
RMS
1.10
1.12
5.05
1.04
1.08
5.15
1.02
1.14
5.20
1.09
1.23
5.14
x32
13.26
13.40
13.88
13.96
1.05
1.10
3.54
0.98
1.08
3.29
0.98
1.09
3.38
1.13
1.22
3.61
x64
FREQ.
MOD.
(kHz)
153.6
19.2
38.4
76.8
16
32
64
f
8
M
x128
0.99
1.10
2.75
7.43
1.00
1.10
2.76
7.31
1.01
1.09
2.79
7.38
1.08
1.21
3.12
7.68
DATA RATES
AVAILABLE
ACCURACY
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
AT 16-BIT
OUTPUT
160, 200
100, 120
200, 240
400, 480
80, 100
STATUS
20, 25
40, 50
50, 60
(sps)
BIT