Datasheet

AD9484
Rev. A | Page 4 of 24
AC SPECIFICATIONS
AVDD = 1.8 V, DRVDD = 1.8 V, T
MIN
= −40°C, T
MAX
= +85°C, f
IN
= −1.0 dBFS, full scale = 1.5 V, unless otherwise noted.
Table 2.
Parameter
1, 2
Temp Min Typ Max Unit
SNR
f
IN
= 30.3 MHz 25°C 47.0 dBFS
f
IN
= 70.3 MHz 25°C 47.0 dBFS
f
IN
= 100.3 MHz 25°C 47.0 dBFS
Full 46.5 dBFS
f
IN
= 250.3 MHz 25°C 47.0 dBFS
f
IN
= 450.3 MHz 25°C 46.9 dBFS
SINAD
f
IN
= 30.3 MHz 25°C 47.0 dBFS
f
IN
= 70.3 MHz 25°C 47.0 dBFS
f
IN
= 100.3 MHz 25°C 47.0 dBFS
Full 46.4 dBFS
f
IN
= 250.3 MHz 25°C 47.0 dBFS
f
IN
= 450.3 MHz 25°C 46.9 dBFS
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 30.3 MHz 25°C 7.5 Bits
f
IN
= 70.3 MHz 25°C 7.5 Bits
f
IN
= 100.3 MHz 25°C 7.5 Bits
f
IN
= 250.3 MHz 25°C 7.5 Bits
f
IN
= 450.3 MHz 25°C 7.5 Bits
WORST HARMONIC (SECOND or THIRD)
f
IN
= 30.3 MHz 25°C −87 dBc
f
IN
= 70.3 MHz 25°C −86 dBc
f
IN
= 100.3 MHz 25°C −87 dBc
Full −75 dBc
f
IN
= 250.3 MHz 25°C 83 dBc
f
IN
= 450.3 MHz 25°C 70 dBc
SFDR
f
IN
= 30.3 MHz 25°C 82 dBc
f
IN
= 70.3 MHz 25°C 81 dBc
f
IN
= 100.3 MHz 25°C 82 dBc
Full 75 dBc
f
IN
= 250.3 MHz 25°C 79 dBc
f
IN
= 450.3 MHz 25°C 70 dBc
WORST OTHER HARMONIC (SFDR EXCLUDING SECOND and THIRD)
f
IN
= 30.3 MHz 25°C −82 dBc
f
IN
= 70.3 MHz 25°C −81 dBc
f
IN
= 100.3 MHz 25°C −82 dBc
Full −75 dBc
f
IN
= 250.3 MHz 25°C 79 dBc
f
IN
= 450.3 MHz 25°C 77 dBc
TWO-TONE IMD
f
IN1
= 119.5 MHz, f
IN2
= 122.5 MHz 25°C −77 dBc
ANALOG INPUT BANDWIDTH
Full Power 25°C 1 GHz
1
All ac specifications tested by driving CLK+ and CLK− differentially.
2
See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions and how these tests were completed.