MAX1448 查看數據表（PDF） - Maxim Integrated
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MAX1448 Datasheet PDF : 21 Pages
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10-Bit, 80Msps, Single 3.0V, Low-Power
ADC with Internal Reference
Typical Operating Characteristics
(VDD = 3.0V, OVDD = 2.7V, internal reference, differential input at -0.5dB FS, fCLK = 83.3MHz, CL ≈ 10pF, TA = +25°C, unless other-
wise noted.)
FFT PLOT
(fIN = 7.5MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
0
SFDR = 75.5dBc
-10
SNR = 59.3dB
-20
THD = -73.9dBc
SINAD = 59.2dB
-30
-40
FFT PLOT
(fIN = 20MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
0
-10
CARRIER
-20
-30
SFDR = 75.2dBc
SNR = 59dB
THD = -71.8dBc
SINAD = 58.7dB
-40
2ND HARMONIC
UNDERSAMPLING FFT PLOT
(fIN = 50MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
0
SFDR = 65.8dBc
-10 SNR = 58dB
-20 THD = -65.1dBc
SINAD = 57.2dB
-30
-40
-50
2ND HARMONIC
-50
-60
-60
3RD HARMONIC
-70
-70
3RD HARMONIC
-50 2ND HARMONIC
-60 3RD HARMONIC
-70
-80
-80
-80
-90
-90
-90
-100
0
5 10 15 20 25 30 35 40 45
ANALOG INPUT FREQUENCY (MHz)
-100
0
5 10 15 20 25 30 35 40 45
ANALOG INPUT FREQUENCY (MHz)
-100
0
5 10 15 20 25 30 35 40 45
ANALOG INPUT FREQUENCY (MHz)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
FFT PLOT
(fIN = 7.5MHz, 8192-POINT FFT,
SINGLE-ENDED INPUT)
SFDR = 72.2dBc
SNR = 58.7dB
THD = -70.8dBc
SINAD = 58.4dB
2ND HARMONIC
3RD HARMONIC
5 10 15 20 25 30 35 40 45
ANALOG INPUT FREQUENCY (MHz)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
FFT PLOT
(fIN = 20MHz, 8192-POINT FFT,
SINGLE-ENDED INPUT)
CARRIER
SFDR = 67.2dBc
SNR = 58.6dB
THD = -66.5dBc
SINAD = 58dB
2ND HARMONIC
3RD HARMONIC
5 10 15 20 25 30 35 40 45
ANALOG INPUT FREQUENCY (MHz)
TWO-TONE INTERMODULATION
(8192-POINT IMD,
DIFFERENTIAL INPUT)
0
f1 = 24MHz AT -6.5dB FS
-10 f2 = 26MHz AT -6.5dB FS
-20 3RD IMD = -74dBc
-30
-40
-50
-60
-70
-80
-90
-100
0
5 10 15 20 25 30 35 40 45
ANALOG INPUT FREQUENCY (MHz)
SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT FREQUENCY
80
SIGNAL-TO-NOISE RATIO
vs. ANALOG INPUT FREQUENCY
62
TOTAL HARMONIC DISTORTION
vs. ANALOG INPUT FREQUENCY
-50
75
DIFFERENTIAL
61
-55
70
60
65
59 DIFFERENTIAL
-60
60
SINGLE ENDED
55
50
45
58
-65
SINGLE ENDED
57
SINGLE ENDED
-70
56
DIFFERENTIAL
-75
55
40
1
10
100
ANALOG INPUT FREQUENCY (MHz)
54
1
10
100
ANALOG INPUT FREQUENCY (MHz)
-80
1
10
100
ANALOG INPUT FREQUENCY (MHz)
6 _______________________________________________________________________________________
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