Datasheet

AD9629
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, unless otherwise noted.
Table 2.
Parameter
1
Temp
AD9629-20/AD9629-40 AD9629-65 AD9629-80
Unit Min Typ Max Min Typ Max Min Typ Max
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 9.7 MHz 25°C 71.4 71.3 71.3 dBFS
f
IN
= 30.5 MHz 25°C 71.2 71.2 71.2 dBFS
Full 70.5/70.7 70.6 dBFS
f
IN
= 70 MHz 25°C 70.5/71.0 71.0 70.9 dBFS
Full 70.3 dBFS
f
IN
= 200 MHz 25°C 69.0 69.0 dBFS
SIGNAL-TO-NOISE-AND-DISTORTION (SINAD)
f
IN
= 9.7 MHz 25°C 71.4 71.3 71.2 dBFS
f
IN
= 30.5 MHz 25°C 71.2 71.2 71.1 dBFS
Full 70.5/70.6 70.5 dBFS
f
IN
= 70 MHz 25°C 70.4/70.9 70.9 70.8 dBFS
Full 70.2 dBFS
f
IN
= 200 MHz 25°C 68 68 68 dBFS
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 9.7 MHz 25°C 11.4/11.6 11.6 11.5 Bits
f
IN
= 30.5 MHz 25°C 11.4/11.5 11.5 11.5 Bits
f
IN
= 70 MHz 25°C 11.4/11.5 11.5 11.5 Bits
f
IN
= 200 MHz 25°C 11.0 11.0 11.0 Bits
WORST SECOND OR THIRD HARMONIC
f
IN
= 9.7 MHz 25°C −97 −97 −95 dBc
f
IN
= 30.5 MHz 25°C −95 −95 −94 dBc
Full −83 −83 dBc
f
IN
= 70 MHz 25°C −96/−94 −95 −95 dBc
Full −81 dBc
f
IN
= 200 MHz 25°C −83 −83 −83 dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 9.7 MHz 25°C 97 97 95 dBc
f
IN
= 30.5 MHz 25°C 96/95 95 93 dBc
Full 83 83 dBc
f
IN
= 70 MHz 25°C 96/94 95 95 dBc
Full 81 dBc
f
IN
= 200 MHz 25°C 83 83 83 dBc
WORST OTHER (HARMONIC OR SPUR)
f
IN
= 9.7 MHz 25°C −100 −100 −100 dBc
f
IN
= 30.5 MHz 25°C −100 −100 −100 dBc
Full −92/−91 −93 dBc
f
IN
= 70 MHz 25°C −97/−100 −100 −100 dBc
Full −89 dBc
f
IN
= 200 MHz 25°C −92 −92 −92 dBc
TWO-TONE SFDR
f
IN
= 30.5 MHz (−7 dBFS), 32.5 MHz (−7 dBFS) 25°C 90 90 90 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.