AD9645 Просмотр технического описания (PDF) - Analog Devices
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AD9645 Datasheet PDF : 36 Pages
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AD9645
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.
Table 2.
Parameter1
SIGNAL-TO-NOISE RATIO (SNR)
fIN = 9.7 MHz
fIN = 30.5 MHz
fIN = 70 MHz
fIN = 139.5 MHz
fIN = 200.5 MHz
SIGNAL-TO-NOISE-AND-DISTORTION RATIO (SINAD)
fIN = 9.7 MHz
fIN = 30.5 MHz
fIN = 70 MHz
fIN = 139.5 MHz
fIN = 200.5 MHz
EFFECTIVE NUMBER OF BITS (ENOB)
fIN = 9.7 MHz
fIN = 30.5 MHz
fIN = 70 MHz
fIN = 139.5 MHz
fIN = 200.5 MHz
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
fIN = 9.7 MHz
fIN = 30.5 MHz
fIN = 70 MHz
fIN = 139.5 MHz
fIN = 200.5 MHz
WORST HARMONIC (SECOND OR THIRD)
fIN = 9.7 MHz
fIN = 30.5 MHz
fIN = 70 MHz
fIN = 139.5 MHz
fIN = 200.5 MHz
WORST OTHER HARMONIC OR SPUR
fIN = 9.7 MHz
fIN = 30.5 MHz
fIN = 70 MHz
fIN = 139.5 MHz
fIN = 200.5 MHz
TWO-TONE INTERMODULATION DISTORTION (IMD)—AIN1 AND
AIN2 = −7.0 dBFS
fIN1 = 70.5 MHz, fIN2 = 72.5 MHz
CROSSTALK2
CROSSTALK (OVERRANGE CONDITION)3
POWER SUPPLY REJECTION RATIO (PSRR)4
AVDD
DRVDD
ANALOG INPUT BANDWIDTH, FULL POWER
AD9645-80
Temp Min Typ Max
25°C
75.6
25°C
75.4
Full
73.1 74.5
25°C
72.1
25°C
70.0
25°C
75.6
25°C
75.2
Full
72.7 74.4
25°C
71.7
25°C
69.7
25°C
12.3
25°C
12.2
Full
11.8 12.1
25°C
11.6
25°C
11.3
25°C
96
25°C
91
Full
82
96
25°C
82
25°C
82
25°C
−96
25°C
−91
Full
−96
−83
25°C
−82
25°C
−82
25°C
−99
25°C
−97
Full
−99
−82
25°C
−93
25°C
−91
AD9645-125
Min Typ
Max
75.2
75.0
72.8 74.3
72.5
70.3
75.1
75.0
72.4 74.2
72.4
70.0
12.2
12.2
11.7 12.0
11.7
11.3
93
97
82
91
91
81
−93
−97
−91
−82
−93
−81
−96
−99
−96
−84
−91
−87
25°C
−93
−93
25°C
−97
−97
25°C
−97
−97
25°C
42
42
25°C
67
67
25°C
650
650
Unit
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
Bits
Bits
Bits
Bits
Bits
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dB
dB
dB
dB
MHz
1 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for definitions and for details on how these tests were completed.
2 Crosstalk is measured at 70 MHz with −1.0 dBFS analog input on one channel and no input on the adjacent channel.
3 Overrange condition is specified with 3 dB of the full-scale input range.
4 PSRR is measured by injecting a sinusoidal signal at 10 MHz to the power supply pin and measuring the output spur on the FFT. PSRR is calculated as the ratio of the
amplitude of the spur voltage over the amplitude of the pin voltage, expressed in decibels (dB).
Rev. B | Page 4 of 36
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