Datasheet

AD9246
Rev. A | Page 5 of 44
AC SPECIFICATIONS
AVDD = 1.8 V; DRVDD = 2.5 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference;AIN = −1.0 dBFS, DCS
enabled, unless otherwise noted.
Table 2.
AD9246BCPZ-80 AD9246BCPZ-105 AD9246BCPZ-125
Parameter
1
Temp
Min Typ Max Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE-RATIO (SNR)
f
IN
= 2.4 MHz 25°C 71.9 71.9 71.9 dBc
f
IN
= 70 MHz 25°C 71.9 71.9 71.7 dBc
Full 70.8 69.5 69.5 dBc
f
IN
= 100 MHz 25°C 71.6 71.6 71.6 dBc
f
IN
= 170 MHz 25°C 70.9 70.9 70.8 dBc
SIGNAL-TO-NOISE AND DISTORTION
(SINAD)
f
IN
= 2.4 MHz 25°C 71.1 71.1 71.1 dBc
f
IN
= 70 MHz 25°C 71.5 70.8 70.6 dBc
Full 70.4 68.5 68.5 dBc
f
IN
= 100 MHz 25°C 70.6 70.6 70.6 dBc
f
IN
= 170 MHz 25°C
69.9
69.9
69.8
dBc
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 2.4 MHz
25°C 11.7 11.7
11.7
Bits
f
IN
= 70 MHz
25°C 11.6 11.6
11.6
Bits
f
IN
= 100 MHz
25°C 11.6 11.6
11.6
Bits
f
IN
= 170 MHz
25°C 11.5 11.5
11.5
Bits
WORST SECOND OR THIRD HARMONIC
f
IN
= 2.4 MHz
25°C
−90
−90
−90
dBc
f
IN
= 70 MHz
25°C
−85
−85
−85
dBc
Full
76
73
−73
dBc
f
IN
= 100 MHz
25°C
−85
−85
−85
dBc
f
IN
= 170 MHz
25°C
−83.5
−83.5
−83
dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 2.4 MHz
25°C
90
90
90
dBc
f
IN
= 70 MHz
25°C
85
85
85
dBc
Full
76
73
73
dBc
f
IN
= 100 MHz
25°C
85
85
85
dBc
f
IN
= 170 MHz
25°C
83.5
83.5
83
dBc
WORST OTHER HARMONIC OR SPUR
f
IN
= 2.4 MHz
25°C
−90
−90
−90
dBc
f
IN
= 70 MHz
25°C
−90
−90
−90
dBc
Full
85
80
−80
dBc
f
IN
= 100 MHz
25°C
−90
−90
−90
dBc
f
IN
= 170 MHz
25°C
−90
−90
−90
dBc
TWO-TONE SFDR
f
IN
= 29 MHz (−7 dBFS), 32 MHz
(−7 dBFS)
25°C 87 87
85
dBc
f
IN
= 169 MHz (−7 dBFS), 172 MHz
(−7 dBFS)
25°C 83 83
84
dBc
ANALOG INPUT BANDWIDTH
25°C
650
650
650
MHz
1
See AN-835, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions.