Datasheet
AD9609
Rev. 0 | Page 5 of 32
AC SPECIFICATIONS
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS, 50% duty
cycle clock, DCS disabled, unless otherwise noted.
Table 2.
Parameter
1
Temp
AD9609-20/AD9609-40 AD9609-65 AD9609-80
Unit Min Typ Max Min Typ Max Min Typ Max
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 9.7 MHz 25°C 61.7 61.5 61.5 dBFS
f
IN
= 30.5 MHz 25°C 61.7 61.5 61.5 dBFS
Full 61.2 61.0 dBFS
f
IN
= 70 MHz 25°C 61.6 61.5 61.5 dBFS
Full 61.0 dBFS
f
IN
= 200 MHz 25°C 61.0 61.0 dBFS
SIGNAL-TO-NOISE-AND-DISTORTION (SINAD)
f
IN
= 9.7 MHz 25°C 61.6 61.4 61.4 dBFS
f
IN
= 30.5 MHz 25°C 61.5 61.3 61.4 dBFS
Full 60.7/60.9 60.5 dBFS
f
IN
= 70 MHz 25°C 61.5 61.4 61.4 dBFS
Full 60.5 dBFS
f
IN
= 200 MHz 25°C 60 60 dBFS
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 9.7 MHz 25°C 9.9 9.9 9.9 Bits
f
IN
= 30.5 MHz 25°C 9.9 9.9 9.9 Bits
f
IN
= 70 MHz 25°C 9.9 9.9 9.9 Bits
f
IN
= 200 MHz 25°C 9.6 9.6 Bits
WORST SECOND OR THIRD HARMONIC
f
IN
= 9.7 MHz 25°C −81 −78 −78 dBc
f
IN
= 30.5 MHz 25°C −80 −80 −80 dBc
Full −67 −65.5 dBc
f
IN
= 70 MHz 25°C −82 −78 −78 dBc
Full −68 dBc
f
IN
= 200 MHz 25°C −73 −73 dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 9.7 MHz 25°C 78 75 75 dBc
f
IN
= 30.5 MHz 25°C 80.5 75 75 dBc
Full 67 65.5 dBc
f
IN
= 70 MHz 25°C 78 75 75 dBc
Full 68 dBc
f
IN
= 200 MHz 25°C 73 73 dBc
WORST OTHER (HARMONIC OR SPUR)
f
IN
= 9.7 MHz 25°C −82 −80 −80 dBc
f
IN
= 30.5 MHz 25°C −82 −80 −80 dBc
Full −74 −72 dBc
f
IN
= 70 MHz 25°C −82 −80 −80 dBc
Full −73 dBc
f
IN
= 200 MHz 25°C −80 −80 dBc
TWO-TONE SFDR
f
IN
= 30.5 MHz (−7 dBFS), 32.5 MHz (−7 dBFS) 25°C 78 78 dBc
ANALOG INPUT BANDWIDTH 25°C 700 700 700 MHz
1
See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions.