AD9642
ADC AC SPECIFICATIONS
AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.75 V p-p full-scale input range, unless
otherwise noted.
Table 2.
Parameter1
SIGNAL-TO-NOISE RATIO (SNR)
fIN = 30 MHz
fIN = 90 MHz
fIN = 140 MHz
fIN = 185 MHz
fIN = 220 MHz
SIGNAL-TO-NOISE AND DISTORTION
(SINAD)
fIN = 30 MHz
fIN = 90 MHz
fIN = 140 MHz
fIN = 185 MHz
fIN = 220 MHz
EFFECTIVE NUMBER OF BITS (ENOB)
fIN = 30 MHz
fIN = 90 MHz
fIN = 140 MHz
fIN = 185 MHz
fIN = 220 MHz
WORST SECOND OR THIRD HARMONIC
fIN = 30 MHz
fIN = 90 MHz
fIN = 140 MHz
fIN = 185 MHz
fIN = 220 MHz
SPURIOUS-FREE DYNAMIC RANGE
(SFDR)
fIN = 30 MHz
fIN = 90 MHz
fIN = 140 MHz
fIN = 185 MHz
fIN = 220 MHz
WORST OTHER (HARMONIC OR SPUR)
fIN = 30 MHz
fIN = 90 MHz
fIN = 140 MHz
fIN = 185 MHz
fIN = 220 MHz
TWO-TONE SFDR
fIN = 184.1 MHz, 187.1 MHz (−7 dBFS)
Temperature
25°C
25°C
Full
25°C
25°C
Full
25°C
25°C
25°C
Full
25°C
25°C
Full
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
Full
25°C
25°C
Full
25°C
25°C
25°C
Full
25°C
25°C
Full
25°C
25°C
25°C
Full
25°C
25°C
Full
25°C
25°C
AD9642-170
Min Typ Max
72.5
72.2
70.7
71.8
71.2
70.7
71.5
71.3
69.6
70.8
70.3
69.7
11.6
11.6
11.5
11.4
11.3
−96
−95
−82
−97
−86
−84
96
95
82
97
86
84
−99
−95
−87
−98
−96
−97
87
Rev. 0 | Page 4 of 28
AD9642-210
Min Typ Max
72.4
72.2
70.0
71.6
71.5
71.0
71.5
71.3
68.7
70.6
70.5
70.1
11.6
11.6
11.4
11.4
11.3
−96
−92
−79
−94
−95
−84
96
92
79
94
95
84
−98
−97
−81
−96
−97
−94
88
AD9642-250
Min Typ Max
72.2
72.0
71.8
71.4
68.6
70.9
71.2
71.0
70.9
70.4
67.5
70.0
11.5
11.5
11.5
11.4
11.3
−90
−89
−90
−86
−80
−86
90
89
90
86
80
86
−95
−98
−97
−96
−81
−95
88
Unit
dBFS
dBFS
dBFS
dBFS
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
dBc
dBc
dBc
dBc
dBc
dBc