Datasheet

AD9481
Rev. 0 | Page 5 of 28
AC SPECIFICATIONS
AVDD = 3.3 V, DRVDD = 3.3 V; T
MIN
= −40°C, T
MAX
= +85°C, A
IN
= −1 dBFS, full scale = 1.0 V, internal reference, differential analog and
clock inputs, unless otherwise noted.
Table 3.
AD9481-250
Parameter Temp Test Level Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 19.7 MHz 25°C V 46 dB
f
IN
= 70.1 MHz 25°C I 44.5 45.7 dB
SIGNAL-TO-NOISE AND DISTORTION (SINAD)
f
IN
= 19.7 MHz 25°C V 45.9 dB
f
IN
= 70.1 MHz 25°C I 44.4 45.7 dB
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 19.7 MHz 25°C V 7.5 Bits
f
IN
= 70.1 MHz 25°C I 7.2 7.5 Bits
WORST SECOND OR THIRD HARMONIC DISTORTION
f
IN
= 19.7 MHz 25°C V −64.8 dBc
f
IN
= 70.1 MHz 25°C I −64.8 −54 dBc
WORST OTHER
f
IN
= 19.7 MHz 25°C V −68 dBc
f
IN
= 70.1 MHz 25°C I −65.8 −56 dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
1
f
IN
= 19.7 MHz 25°C V −64.8 dBc
f
IN
= 70.1 MHz 25°C I −64.8 −54 dBc
TWO-TONE INTERMODULATION DISTORTION (IMD)
f
IN1
= 69.3 MHz, f
IN2
= 70.3 MHz 25°C V −64.9 dBc
1
DC and Nyquist bin energy ignored.