AD9257 查看數據表（PDF） - Analog Devices
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AD9257 Datasheet PDF : 40 Pages
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AD9257
Data Sheet
AC SPECIFICATIONS
AVDD = 1.8 V, DRVDD = 1.8 V, 2 V p-p differential input, 1.0 V internal reference, AIN = −1.0 dBFS, unless otherwise noted. CLK
divider = 8 used for typical characteristics at input frequency ≥ 19.7 MHz.
Table 2.
Parameter1
SIGNAL-TO-NOISE RATIO (SNR)
fIN = 9.7 MHz
fIN = 19.7 MHz
fIN = 30.5 MHz
fIN = 63.5 MHz
fIN = 69.5 MHz
fIN = 123.4 MHz
SIGNAL-TO-NOISE AND DISTORTION RATIO (SINAD)
fIN = 9.7 MHz
fIN = 19.7 MHz
fIN = 30.5 MHz
fIN = 63.5 MHz
fIN = 69.5 MHz
fIN = 123.4 MHz
EFFECTIVE NUMBER OF BITS (ENOB)
fIN = 9.7 MHz
fIN = 19.7 MHz
fIN = 30.5 MHz
fIN = 63.5 MHz
fIN = 69.5 MHz
fIN = 123.4 MHz
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
fIN = 9.7 MHz
fIN = 19.7 MHz
fIN = 30.5 MHz
fIN = 63.5 MHz
fIN = 69.5 MHz
fIN = 123.4 MHz
WORST HARMONIC (SECOND OR THIRD)
fIN = 9.7 MHz
fIN = 19.7 MHz
fIN = 30.5 MHz
fIN = 63.5 MHz
fIN = 69.5 MHz
fIN = 123.4 MHz
WORST OTHER (EXCLUDING SECOND OR THIRD)
fIN = 9.7 MHz
fIN = 19.7 MHz
fIN = 30.5 MHz
fIN = 63.5 MHz
fIN = 69.5 MHz
fIN = 123.4 MHz
TWO-TONE INTERMODULATION DISTORTION (IMD)—AIN1
AND AIN2 = −7.0 dBFS
fIN1 = 8 MHz, fIN2 = 10 MHz
fIN1 = 30 MHz, fIN2 = 32 MHz
AD9257-40
Temp Min Typ
Max
25°C
75.9
Full 73.5 75.8
25°C
75.7
25°C
25°C
74.7
25°C
25°C
75.8
Full 72.5 75.7
25°C
75.6
25°C
25°C
74.5
25°C
25°C
12.3
Full 11.7 12.3
25°C
12.3
25°C
25°C
12.1
25°C
25°C
96
Full 80
96
25°C
97
25°C
25°C
87
25°C
25°C
−99
Full
−96
−80
25°C
−100
25°C
25°C
−87
25°C
25°C
−96
Full
−99
−86
25°C
−97
25°C
25°C
−98
25°C
25°C
95
25°C
AD9257-65
Min
Typ Max Unit
75.7
73.3
75.6
75.5
74.9
73.2
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
75.6
72.0
75.6
75.4
74.8
72.8
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
12.3
Bits
11.7
12.3
Bits
12.2
Bits
12.1
Bits
Bits
11.8
Bits
96
dBc
79
96
dBc
91
dBc
95
dBc
dBc
83
dBc
−99
dBc
−98 −79 dBc
−91
dBc
−98
dBc
dBc
−83
dBc
−96
dBc
−96 −88 dBc
−98
dBc
−95
dBc
dBc
−94
dBc
dBc
92
dBc
Rev. A | Page 4 of 40
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