Datasheet

AD9608
Rev. 0 | Page 5 of 40
AC SPECIFICATIONS
AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.0 V internal reference, DCS enabled, unless
otherwise noted.
Table 2.
AD9608-105 AD9608-125
Parameter
1
Temp Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE-RATIO (SNR)
f
IN
= 9.7 MHz 25°C 61.7 61.7 dBFS
f
IN
= 30.5 MHz 25°C 61.7 61.7 dBFS
f
IN
= 70 MHz 25°C 61.7 61.7 dBFS
Full 61.3 61.3 dBFS
f
IN
= 100 MHz
25°C 61.6 61.6 dBFS
f
IN
= 200 MHz 25°C 61.4 61.4 dBFS
SIGNAL-TO-NOISE AND DISTORTION (SINAD)
f
IN
= 9.7 MHz 25°C 61.6 61.6 dBFS
f
IN
= 30.5 MHz 25°C 61.6 61.6 dBFS
f
IN
= 70 MHz 25°C 61.6 61.6 dBFS
Full 61.1 61.1 dBFS
f
IN
= 100 MHz 25°C 61.5 61.5 dBFS
f
IN
= 200 MHz 25°C
61.3 61.3
dBFS
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 9.7 MHz
25°C 9.9 9.9 Bits
f
IN
= 30.5 MHz
25°C 9.9 9.9 Bits
f
IN
= 70 MHz
25°C 9.9 9.9 Bits
f
IN
= 100 MHz
25°C 9.9 9.9 Bits
f
IN
= 200 MHz
25°C 9.9 9.9 Bits
WORST SECOND OR THIRD HARMONIC
f
IN
= 9.7 MHz
25°C
−90 −90
dBc
f
IN
= 30.5 MHz
25°C
−89 −89
dBc
f
IN
= 70 MHz
25°C
−89 −89
dBc
Full
−75 −75
dBc
f
IN
= 100 MHz
25°C
−89 −89
dBc
f
IN
= 200 MHz
25°C
−84 −84
dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 9.7 MHz
25°C
85 85
dBc
f
IN
= 30.5 MHz
25°C
85 85
dBc
f
IN
= 70 MHz
25°C
85 85
dBc
Full
75 75
dBc
f
IN
= 100 MHz
25°C
85 85
dBc
f
IN
= 200 MHz
25°C
84 84
dBc
WORST OTHER (HARMONIC OR SPUR)
f
IN
= 9.7 MHz
25°C
−85 −85
dBc
f
IN
= 30.5 MHz
25°C
−85 −85
dBc
f
IN
= 70 MHz
25°C
−85 −85
dBc
Full
−75 −75
dBc
f
IN
= 100 MHz
25°C
−85 −85
dBc
f
IN
= 200 MHz
25°C
−85 −85
dBc
TWO-TONE SFDR
f
IN
= 29 MHz (−7 dBFS ), 32 MHz (−7 dBFS )
25°C
82 82
dBc
CROSSTALK
2
Full
−95 −95
dB
ANALOG INPUT BANDWIDTH
25°C
650 650
MHz
1
See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions.
2
Crosstalk is measured at 100 MHz with −1.0 dBFS on one channel and no input on the alternate channel.