Specifications

Data Sheet AD9259
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
Temperature Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 2.4 MHz Full 73.5 dB
f
IN
= 19.7 MHz Full 71.0 73.0 dB
f
IN
= 70 MHz Full 72.8 dB
SIGNAL-TO-NOISE AND DISTORTION RATIO (SINAD)
f
IN
= 2.4 MHz Full 72.7 dB
f
IN
= 19.7 MHz Full 70.2 72.2 dB
f
IN
= 70 MHz Full 72.0 dB
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 2.4 MHz Full 11.92 Bits
f
IN
= 19.7 MHz Full 11.5 11.85 Bits
f
IN
= 70 MHz Full 11.8 Bits
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 2.4 MHz Full 84 dBc
f
IN
= 19.7 MHz Full 73 84 dBc
f
IN
= 70 MHz Full 78 dBc
WORST HARMONIC (Second or Third)
f
IN
= 2.4 MHz Full −88 dBc
f
IN
= 19.7 MHz Full −84 −73 dBc
f
IN
= 70 MHz Full −78 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
= 70 MHz Full −88 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, at www.analog.com for definitions and for details on how these tests were
completed.