AD6641
Rev. 0 | Page 5 of 28
AC SPECIFICATIONS
AVDD = 1.9 V, DRVDD = 1.9 V, TMIN = 40°C, TMAX = +85°C, fIN = 1.0 dBFS, full scale = 1.5 V, unless otherwise noted.
Table 2.
AD6641-500
Temp
Min
Typ
Max
Unit
SNR
fIN = 30 MHz
25°C
66.0
dBFS
fIN = 125 MHz
25°C
65.9
dBFS
Full
65.0
dBFS
fIN = 250 MHz
25°C
65.8
dBFS
fIN = 450 MHz
25°C
65.1
dBFS
SINAD
fIN = 30 MHz
25°C
66.0
dBFS
fIN = 125 MHz
25°C
65.7
dBFS
Full
63.8
dBFS
fIN = 250 MHz
25°C
65.3
dBFS
fIN = 450 MHz
25°C
64.6
dBFS
EFFECTIVE NUMBER OF BITS (ENOB)
fIN = 30 MHz
25°C
10.7
Bits
fIN = 125 MHz
25°C
10.6
Bits
fIN = 250 MHz
25°C
10.5
Bits
fIN = 450 MHz
25°C
10.4
Bits
SFDR
fIN = 30 MHz
25°C
88
dBc
fIN = 125 MHz
25°C
83
dBc
Full
77
dBc
fIN = 250 MHz
25°C
80
dBc
fIN = 450 MHz
25°C
72
dBc
WORST HARMONIC (SECOND OR THIRD)
fIN = 30 MHz
25°C
92
dBc
fIN = 125 MHz
25°C
77
dBc
Full
84
dBc
fIN = 250 MHz
25°C
80
dBc
fIN = 450 MHz
25°C
72
dBc
WORST OTHER HARMONIC (SFDR EXCLUDING SECOND AND THIRD)
fIN = 30 MHz
25°C
90
dBc
fIN = 125 MHz
25°C
90
dBc
Full
77
dBc
fIN = 250 MHz
25°C
85
dBc
fIN = 450 MHz
25°C
78
dBc
TWO-TONE IMD
fIN1 = 119.8 MHz, fIN2 = 125.8 MHz (7 dBFS, Each Tone)
25°C
82
dBc
ANALOG INPUT BANDWIDTH
25°C
1
GHz
1 All ac specifications tested by driving CLK+ and CLK differentially.
2 See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions and information about how these tests were completed.