Datasheet

Data Sheet AD9287
Rev. E | Page 5 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.
Parameter
1
Temp Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 2.4 MHz Full 49.2 dB
f
IN
= 49.7 MHz Full 46.5 49.0 dB
f
IN
= 70 MHz Full 49.0 dB
SIGNAL-TO-NOISE AND DISTORTION RATIO (SINAD)
f
IN
= 2.4 MHz Full 49.0 dB
f
IN
= 49.7 MHz Full 46.0 48.5 dB
f
IN
= 70 MHz Full 48.5 dB
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 2.4 MHz Full 7.88 Bits
f
IN
= 49.7 MHz Full 7.43 7.85 Bits
f
IN
= 70 MHz Full 7.85 Bits
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 2.4 MHz Full 70.0 dBc
f
IN
= 49.7 MHz Full 54.0 65.0 dBc
f
IN
= 70 MHz Full 62.0 dBc
WORST HARMONIC (Second or Third)
f
IN
= 2.4 MHz Full −70.0 dBc
f
IN
= 49.7 MHz Full −65.0 −54.0 dBc
f
IN
= 70 MHz Full −62.0 dBc
WORST OTHER (Excluding Second or Third)
f
IN
= 2.4 MHz Full −77.0 dBc
f
IN
= 49.7 MHz Full −74.0 −58.5 dBc
f
IN
= 70 MHz Full −71.0 dBc
TWO-TONE INTERMODULATION DISTORTION (IMD)—
AIN1 AND AIN2 = −7.0 dBFS
f
IN1
= 15 MHz, f
IN2
= 16 MHz 25°C 70.0 dBc
f
IN1
= 70 MHz, f
IN2
= 71 MHz 25°C 68.5 dBc
1
See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, at www.analog.com for definitions and for details on how these tests were
completed.