Typical operating characteristics – Rainbow Electronics MAX1448 User Manual
Page 5
MAX1448
10-Bit, 80Msps, Single +3.0V, Low-Power
ADC with Internal Reference
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5
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0
10
15
20
5
25
30
35
40
45
FFT PLOT
(f
IN
= 7.5MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
MAX1448-01
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SFDR = 75.5dBc
SNR = 59.3dB
THD = -73.9dBc
SINAD = 59.2dB
2ND HARMONIC
3RD HARMONIC
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0
10
15
20
5
25
30
35
40
45
FFT PLOT
(f
IN
= 20MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
MAX1448-02
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SFDR = 75.2dBc
SNR = 59dB
THD = -71.8dBc
SINAD = 58.7dB
2ND HARMONIC
3RD HARMONIC
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0
10
15
20
5
25
30
35
40
45
UNDERSAMPLING FFT PLOT
(f
IN
= 50MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
MAX1448-03
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SFDR = 65.8dBc
SNR = 58dB
THD = -65.1dBc
SINAD = 57.2dB
2ND HARMONIC
3RD HARMONIC
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0
10
15
20
5
25
30
35
40
45
FFT PLOT
(f
IN
= 7.5MHz, 8192-POINT FFT,
SINGLE-ENDED INPUT)
MAX1448-04
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SFDR = 72.2dBc
SNR = 58.7dB
THD = -70.8dBc
SINAD = 58.4dB
2ND HARMONIC
3RD HARMONIC
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0
10
15
20
5
25
30
35
40
45
FFT PLOT
(f
IN
= 20MHz, 8192-POINT FFT,
SINGLE-ENDED INPUT)
MAX1448-05
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SFDR = 67.2dBc
SNR = 58.6dB
THD = -66.5dBc
SINAD = 58dB
2ND HARMONIC
3RD HARMONIC
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0
10
15
20
5
25
30
35
40
45
TWO-TONE INTERMODULATION
(8192-POINT IMD,
DIFFERENTIAL INPUT)
MAX1448-06
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f
1
= 24MHz AT -6.5dB FS
f
2
= 26MHz AT -6.5dB FS
3RD IMD = -74dBc
80
40
1
10
100
SPURIOUS-FREE DYNAMIC RANGE vs.
ANALOG INPUT FREQUENCY
50
45
MAX1448-07
ANALOG INPUT FREQUENCY (MHz)
SFDR (dBc)
60
55
65
70
75
DIFFERENTIAL
SINGLE-ENDED
62
54
1
10
100
SIGNAL-TO-NOISE RATIO vs.
ANALOG INPUT FREQUENCY
56
55
MAX1448-08
ANALOG INPUT FREQUENCY (MHz)
SNR (dB)
58
57
59
60
61
DIFFERENTIAL
SINGLE-ENDED
-50
-80
1
10
100
TOTAL HARMONIC DISTORTION vs.
ANALOG INPUT FREQUENCY
MAX1448-09
ANALOG INPUT FREQUENCY (MHz)
THD (dBc)
-75
-70
-65
-60
-55
SINGLE-ENDED
DIFFERENTIAL
Typical Operating Characteristics
(V
DD
= +3.0V, OV
DD
= +2.7V, internal reference, differential input at -0.5dB FS, f
CLK
= 83.3MHz, C
L
≈ 10pF, T
A
= +25°C, unless oth-
erwise noted.)