Datasheet

AD9634
Rev. 0 | Page 4 of 32
ADC AC SPECIFICATIONS
AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.75 V p-p full-scale input range, unless
otherwise noted.
Table 2.
AD9634-170 AD9634-210 AD9634-250
Parameter
1
Temperature Min Typ Max Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 30 MHz 25°C 70.3 70.2 70.1 dBFS
f
IN
= 90 MHz 25°C 70.1 70.1 70.0 dBFS
Full 69.1 68.8 dBFS
f
IN
= 140 MHz 25°C 69.9 70.0 69.9 dBFS
f
IN
= 185 MHz 25°C 69.5 69.6 69.7 dBFS
Full 67.8 dBFS
f
IN
= 220 MHz 25°C 69.2 69.2 69.3 dBFS
SIGNAL-TO-NOISE AND DISTORTION (SINAD)
f
IN
= 30 MHz 25°C 69.4 69.2 69.2 dBFS
f
IN
= 90 MHz 25°C 69.2 69.1 69.0 dBFS
Full 68.1 67.8 dBFS
f
IN
= 140 MHz 25°C 68.9 69.1 69.0 dBFS
f
IN
= 185 MHz 25°C 68.5 68.7 68.7 dBFS
Full 66.7 dBFS
f
IN
= 220 MHz 25°C 68.3 68.3 68.4 dBFS
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 30 MHz 25°C 11.2 11.2 11.2 Bits
f
IN
= 90 MHz 25°C 11.2 11.2 11.2 Bits
f
IN
= 140 MHz 25°C 11.1 11.2 11.2 Bits
f
IN
= 185 MHz 25°C 11.1 11.1 11.1 Bits
f
IN
= 220 MHz 25°C 11.0 11.0 11.1 Bits
WORST SECOND OR THIRD HARMONIC
f
IN
= 30 MHz 25°C −96 −96 −90 dBc
f
IN
= 90 MHz 25°C −95 −92 −89 dBc
Full −83 −80 dBc
f
IN
= 140 MHz 25°C −97 −94 −91 dBc
f
IN
= 185 MHz 25°C −86 −95 −87 dBc
Full −80 dBc
f
IN
= 220 MHz 25°C −84 −84 −93 dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 30 MHz 25°C 96 96 90 dBc
f
IN
= 90 MHz 25°C 95 92 89 dBc
Full 83 80 dBc
f
IN
= 140 MHz 25°C 97 94 91 dBc
f
IN
= 185 MHz 25°C 86 95 87 dBc
Full 80 dBc
f
IN
= 220 MHz 25°C 84 84 93 dBc
WORST OTHER (HARMONIC OR SPUR)
f
IN
= 30 MHz 25°C −98 −96 −95 dBc
f
IN
= 90 MHz 25°C −97 −95 −95 dBc
Full −87 −83 dBc
f
IN
= 140 MHz 25°C −98 −97 −96 dBc
f
IN
= 185 MHz 25°C −95 −95 −94 dBc
Full −81 dBc
f
IN
= 220 MHz 25°C −96 −95 −94 dBc