MAX1421 查看數據表（PDF） - Maxim Integrated
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MAX1421 Datasheet PDF : 17 Pages
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12-Bit, 40Msps, 3.3V, Low-Power ADC
with Internal Reference
Typical Operating Characteristics (continued)
(VAVDD = VDVDD = 3.3V, AGND = DGND = 0, VIN = ±1.024V, differential input voltage, fCLK = 40MHz (50% duty cycle), digital output
load CL = 10pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
TWO-TONE IMD, 8192-POINT RECORD,
DIFFERENTIAL INPUT
0
fIN1 = 11.51MHz
fIN2 = 13.51MHz
-20 AIN1 = AIN2 = -6.5dB FS
-40
-60
-80
IM2
fIN1
fIN2
IM3
-100
SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT FREQUENCY
85
77
69
61
53
SIGNAL-TO-NOISE RATIO
vs. ANALOG INPUT FREQUENCY
70
66
62
58
54
-120
0
2 4 6 8 10 12 14 16 18 20
ANALOG INPUT FREQUENCY (MHz)
45
0 5 10 15 20 25 30 35 40 45 50 55
ANALOG INPUT FREQUENCY (MHz)
50
0 5 10 15 20 25 30 35 40 45 50 55
ANALOG INPUT FREQUENCY (MHz)
TOTAL HARMONIC DISTORTION
vs. ANALOG INPUT FREQUENCY
-50
SIGNAL-TO-NOISE PLUS DISTORTION
vs. ANALOG INPUT FREQUENCY
70
SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT POWER (fIN = 15MHz)
80
-56
66
70
60
-62
62
50
-68
58
40
-74
54
30
-80
0 5 10 15 20 25 30 35 40 45 50 55
ANALOG INPUT FREQUENCY (MHz)
50
0 5 10 15 20 25 30 35 40 45 50 55
ANALOG INPUT FREQUENCY (MHz)
20
-60 -50 -40 -30 -20 -10 0
ANALOG INPUT POWER (dBFS)
SIGNAL-TO-NOISE RATIO
vs. ANALOG INPUT POWER (fIN = 15MHz)
80
70
60
50
40
30
20
10
0
-60 -50 -40 -30 -20 -10 0
ANALOG INPUT POWER (dBFS)
TOTAL HARMONIC DISTORTION
vs. ANALOG INPUT POWER (fIN = 15MHz)
-30
-40
-50
-60
-70
-80
-60 -50 -40 -30 -20 -10 0
ANALOG INPUT POWER (dBFS)
SIGNAL-TO-NOISE PLUS DISTORTION
vs. ANALOG INPUT POWER (fIN = 15MHz)
80
70
60
50
40
30
20
10
0
-60 -50 -40 -30 -20 -10 0
ANALOG INPUT POWER (dBFS)
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