MAX1446
10-Bit, 60Msps, +3.0V, Low-Power
ADC with Internal Reference
_______________________________________________________________________________________ 5
MAX1446 toc01
-100
-70
-80
-90
-50
-60
-10
-20
-30
-40
0
0 5 10 15 20 25 30 35
FFT PLOT
(f
IN
= 7.5MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SFDR = 72.2dBc
SNR = 60.1dB
THD = -71.5dBc
SINAD = 59.8dB
3RD HARMONIC
2ND HARMONIC
-100
-70
-80
-90
-50
-60
-10
-20
-30
-40
0
0 5 10 15 20 25 30 35
FFT PLOT
(f
IN
= 13.3MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
MAX1446 toc02
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SINAD = 59.3dB
SNR = 59.5dB
THD = -72.9dBc
SFDR = 74.3dBc
3RD HARMONIC
2ND HARMONIC
-100
-70
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-90
-50
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-10
-20
-30
-40
0
0 5 10 15 20 25 30 35
FFT PLOT
(f
IN
= 20MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
MAX1446 toc03
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SINAD = 59.3dB
SNR = 59.6dB
THD = -70.7dBc
SFDR = 72.2dBc
3RD HARMONIC
2ND HARMONIC
-100
-70
-80
-90
-50
-60
-10
-20
-30
-40
0
0 5 10 15 20 25 30 35
FFT PLOT
(f
IN
= 26.8MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
MAX1446 toc04
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SINAD = 59.0dB
SNR = 59.4dB
THD = -70.5dBc
SFDR = 72.9dBc
3RD HARMONIC
2ND HARMONIC
-100
-70
-80
-90
-50
-60
-10
-20
-30
-40
0
0 5 10 15 20 25 30 35
FFT PLOT
(f
IN
= 50MHz, 8192-POINT FFT,
DIFFERENTIAL INPUT)
MAX1446 toc05
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SFDR = 70dBc
SNR = 59.1dB
THD = -67.1dBc
SINAD = 58.5dB
3RD HARMONIC
2ND HARMONIC
-100
-70
-80
-90
-50
-60
-10
-20
-30
-40
0
0 5 10 15 20 25 30 35
FFT PLOT
(f
IN
= 7.5MHz, 8192-POINT FFT,
SINGLE-ENDED INPUT)
MAX1446 toc06
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SINAD = 59.5dB
SNR = 59.7dB
THD = -73.0dBc
SFDR = 73.6dBc
3RD HARMONIC
2ND HARMONIC
-100
-70
-80
-90
-50
-60
-10
-20
-30
-40
0
0 5 10 15 20 25 30 35
FFT PLOT
(f
IN
= 20MHz, 8192-POINT FFT,
SINGLE-ENDED INPUT)
MAX1446 toc07
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
SINAD = 59.2dB
SNR = 59.5dB
THD = -70.7dBc
SFDR = 71.1dBc
3RD HARMONIC
2ND HARMONIC
Typical Operating Characteristics
(V
DD
= +3.0V, OV
DD
= +2.7V, internal reference, differential input at -0.5dBFS, f
CLK
= 62.35MHz, C
L
≈ 10pF, T
A
= +25°C, unless
otherwise noted.)
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0
0 5 10 15 20 25 30 35
TWO-TONE INTERMODULATION
(8192-POINT IMD,
DIFFERENTIAL INPUT)
MAX1446 toc10
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f
1
= 19MHz AT -6.5dBFS
f
2
= 21MHz AT -6.5dBFS
3RD IMD = -76dBc
1 10 100
MAX1446 toc11
ANALOG INPUT FREQUENCY (MHz)
SINAD (dBc)
DIFFERENTIAL
SINGLE ENDED
SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT FREQUENCY
80
50
55
60
65
70
75
(92 pages)
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