MAX1402
+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
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Table 15. Modulator Operating Frequency, Sampling Frequency, and 16-Bit Data
Output Rates
1
0
MF0
1
0
0
1
1
0
1
1
MF1
0
0
1
0
1
0
400, 480153.6307.2
200, 24076.8153.6
2.4576 14.9152
2.4576 14.9152
160, 200
100, 12038.4
AVAILABLE
OUTPUT
DATA RATES
AT 16-BIT
ACCURACY
(sps)
MOD.
FREQ.
f
M
(kHz)
AIN/REFIN
SAMPLING
FREQ.
f
S
(kHz)
76.8
50, 60
19.2
20, 25
80, 100
38.4
64128
32
1.024
64
2.4576
40, 501632
816
MCLK
FREQ.
X2CLK = 0
DEFAULT
f
CLKIN
(MHz)
CLK
MCLK
FREQ.
X2CLK = 1
f
CLKIN
(MHz)
14.9152
1.024
1.024
2.4576 1
4.9152
02.048
1.024 02.048
0
0
2.048
2.048
Table 16a. MAX1402 Noise vs. Gain and Output Data Rate—Unbuffered Mode,
V
REF
= 2.5V, f
CLKIN
= 2.4576MHz
PROGRAMMABLE GAIN
x1
x2 x4 x8 x16 x32 x64 x128
MF1:MF0 = 0
FS1:FS0 = 37.6813.9626.4751.42103.78203.74419.17820.7312584800
FS1:FS0 = 23.123.615.149.6718.9236.5469.17150.09628.82400
FS1:FS0 = 11.211.221.231.281.442.363.848.15125.7480
FS1:FS0 = 01.08
1.131.091.161.312.063.506.87104.8
400
MF1:MF0 = 3
FS1:FS0 = 37.38
13.8826.5751.17103.04200.51399.44816.66628.82400
FS1:FS0 = 22.793.385.209.4518.1135.9171.25141.69314.41200
FS1:FS0 = 11.091.091.141.151.342.044.167.0062.9240
FS1:FS0 = 01.01
0.981.021.071.261.964.006.2552.4
200
MF1:MF0 = 2
FS1:FS0 = 37.31
13.4024.5052.3899.75203.35405.49836.32314.41200
FS1:FS0 = 22.763.295.159.3419.1937.6973.86138.79157.2600
FS1:FS0 = 11.101.081.081.171.362.143.937.9131.4120
FS1:FS0 = 01.00
0.981.041.101.241.943.616.9826.2
100
MF1:MF0 = 1
FS1:FS0 = 37.43
13.2626.2550.91107.06216.88417.07844.82157.2600
FS1:FS0 = 22.753.545.059.5717.9135.1070.73147.6078.6300
FS1:FS0 = 11.101.101.121.201.362.213.947.2315.760
FS1:FS0 = 0
BIT
STATUS
0.99
TYPICAL OUTPUT NOISE IN µV
RMS
1.051.101.131.252.023.276.20
OUTPUT
DATA
RATE
(sps)
13.150
-3dB
FREQ.
(Hz)
Note: Default condition is in bold print.
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