Datasheet

AD9222 Data Sheet
Rev. F | Page 4 of 60
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.
AD9222-40 AD9222-50 AD9222-65
Parameter
1
Temp Min Typ Max Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 2.4 MHz Full 70.3 70.4 70.3 dB
f
IN
= 19.7 MHz Full 69.5 70.3 69.5 70.3 68.5 70.0 dB
f
IN
= 35 MHz Full 69.9 70.0 69.8 dB
f
IN
= 70 MHz Full 68.8 69.0 69.5 dB
SIGNAL-TO-NOISE AND DISTORTION RATIO (SINAD)
f
IN
= 2.4 MHz
Full
70.0
70.0
69.5
dB
f
IN
= 19.7 MHz Full 68.7 70.0 68.5 70.0 66.8 69.4 dB
f
IN
= 35 MHz Full 69.5 69.8 69.3 dB
f
IN
= 70 MHz Full 68.0 68.5 69 dB
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 2.4 MHz Full 11.38 11.4 11.4 Bits
f
IN
= 19.7 MHz Full 11.25 11.38 11.25 11.38 11.1 11.34 Bits
f
IN
= 35 MHz Full 11.32 11.33 11.30 Bits
f
IN
= 70 MHz Full 11.14 11.17 11.25 Bits
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 2.4 MHz Full 85 85 83 dBc
f
IN
= 19.7 MHz
Full
73
85
73
84
70.5
80
dBc
f
IN
= 35 MHz Full 80 83 80 dBc
f
IN
= 70 MHz Full 76 77 75 dBc
WORST HARMONIC (Second or Third)
f
IN
= 2.4 MHz Full −85 −85 −83 dBc
f
IN
= 19.7 MHz Full −85 −74 −84 −73 −80 −70.5 dBc
f
IN
= 35 MHz Full −80 −83 −80 dBc
f
IN
= 70 MHz Full −76 −77 −75 dBc
WORST OTHER (Excluding Second or Third)
f
IN
= 2.4 MHz Full −92 −92 −90 dBc
f
IN
= 19.7 MHz Full −92 −80 −92 −80 −90 −80 dBc
f
IN
= 35 MHz
Full
−92
−92
−90
dBc
f
IN
= 70 MHz Full −90 −90 −85 dBc
TWO-TONE INTERMODULATION DISTORTION (IMD)—
AIN1 AND AIN2 = −7.0 dBFS
f
IN1
= 15 MHz, f
IN2
= 16 MHz 25°C 80.0 80.0 80.0 dBc
f
IN1
= 70 MHz, f
IN2
= 71 MHz 25°C 77.0 77.0 75.0 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.