Datasheet

AD9252 Data Sheet
Rev. E | Page 4 of 52
AC SPECIFICATIONS
AVDD = 1.8 V, DRVDD = 1.8 V, 2 V p-p differential input, 1.0 V internal reference, AIN = −0.5 dBFS, unless otherwise noted.
Table 2.
AD9252-50
Parameter
1
Temperature Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 2.4 MHz Full 73.2 dB
f
IN
= 19.7 MHz Full 71 73 dB
f
IN
= 35 MHz Full 72.7 dB
f
IN
= 70 MHz Full 71 dB
SIGNAL-TO-NOISE AND DISTORTION RATIO (SINAD)
f
IN
= 2.4 MHz
Full
72.5
dB
f
IN
= 19.7 MHz Full 70.2 72.2 dB
f
IN
= 35 MHz Full 72 dB
f
IN
= 70 MHz Full 70.5 dB
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 2.4 MHz Full 11.87 Bits
f
IN
= 19.7 MHz Full 11.5 11.84 Bits
f
IN
= 35 MHz Full 11.79 Bits
f
IN
= 70 MHz Full 11.5 Bits
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 2.4 MHz Full 85 dBc
f
IN
= 19.7 MHz
Full
73
84
dBc
f
IN
= 35 MHz Full 83 dBc
f
IN
= 70 MHz Full 79 dBc
WORST HARMONIC (SECOND OR THIRD)
f
IN
= 2.4 MHz Full −85 dBc
f
IN
= 19.7 MHz Full −84 −73 dBc
f
IN
= 35 MHz Full −83 dBc
f
IN
= 70 MHz Full −79 dBc
WORST OTHER (EXCLUDING SECOND OR THIRD)
f
IN
= 2.4 MHz Full −90 dBc
f
IN
= 19.7 MHz Full −90 −80 dBc
f
IN
= 35 MHz
Full
−90
dBc
f
IN
= 70 MHz Full −89 dBc
TWO-TONE INTERMODULATION DISTORTION (IMD)—AIN1 AND AIN2 = −7.0 dBFS
f
IN1
= 15 MHz, f
IN2
= 16 MHz 25°C 80.0 dBc
f
IN1
= 70 MHz, f
IN2
= 71 MHz 25°C 80.0 dBc
1
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.