Manual
MAX1338
14-Bit, 4-Channel, Software-Programmable,
Multiranging, Simultaneous-Sampling ADC
8 _______________________________________________________________________________________
-125
-100
-50
-75
-25
0
03015 45 60 75
FFT AT f
SAMPLE
= 150ksps, f
IN
= 10kHz
MAX1338 toc10
FREQUENCY (kHz)
AMPLITUDE (dB)
70
72
71
74
73
76
75
77
79
78
80
1 3452 678910
SIGNAL-TO-NOISE RATIO
vs. CLOCK FREQUENCY
MAX1338 toc11
f
CLK
(MHz)
SNR (dB)
70
72
71
74
73
76
75
77
79
78
80
1 3452 678910
SIGNAL-TO-NOISE PLUS DISTORTION
vs. CLOCK FREQUENCY
MAX1338 toc12
f
CLK
(MHz)
SNR (dB)
-110
-106
-108
-102
-104
-98
-100
-96
-92
-94
-90
1 3452 678910
TOTAL HARMONIC DISTORTION
vs. CLOCK FREQUENCY
MAX1338 toc13
f
CLK
(MHz)
THD (dB)
80
85
90
95
100
105
110
13245678910
SPURIOUS-FREE DYNAMIC RANGE
vs. CLOCK FREQUENCY
MAX1338 toc14
f
CLK
(MHz)
SFDR (dB)
70
73
72
71
74
75
76
77
78
79
80
2.0 2.42.2 2.6 2.8 3.0
SIGNAL-TO-NOISE RATIO
vs. REFERENCE VOLTAGE
MAX1338 toc15
V
REFADC
(V)
SNR (dB)
70
73
72
71
74
75
76
77
78
79
80
2.0 2.42.2 2.6 2.8 3.0
SIGNAL-TO-NOISE PLUS DISTORTION
vs. REFERENCE VOLTAGE
MAX1338 toc16
V
REFADC
(V)
SINAD (dB)
-105
-99
-101
-103
-97
-95
-93
-91
-89
-87
-85
2.0 2.42.2 2.6 2.8 3.0
TOTAL HARMONIC DISTORTION
vs. REFERENCE VOLTAGE
MAX1338 toc17
V
REFADC
(V)
THD (dB)
80
90
85
100
95
105
110
2.0 2.42.2 2.6 2.8 3.0
SPURIOUS-FREE DYNAMIC RANGE
vs. REFERENCE VOLTAGE
MAX1338 toc18
V
REFADC
(V)
SFDR (dB)
Typical Operating Characteristics (continued)
(AV
DD
= DV
DD
= +5.0V, DRV
DD
= +3.0V, AGND = DGND = DRGND = 0, INTCLK/EXTCLK = AGND, f
CLK
= 5MHz, input range =
±10V, REFP2 = REFP1, REFN2 = REFN1, COM1 = COM2, 1.0nF from REFADC to AGND, 1.0µF and 0.1µF from COM1 to AGND,
0.1µF from REFP1 to AGND, 0.1µF from REFN1 to AGND, 1.0µF from REFP1 to REFN1.)