Datasheet

Data Sheet AD9245
Rev. E | Page 5 of 32
AC SPECIFICATIONS
AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference, AIN = –0.5 dBFS, DCS off,
unless otherwise noted.
Table 3.
AD9245BCP-20 AD9245BCP-40 AD9245BCP-65
Parameter Min Typ Max Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
f
INPUT
= 2.4 MHz 73.5 73.5 73.1 dBc
f
INPUT
= 9.7 MHz
70.6
73.3
dBc
f
INPUT
= 19.6 MHz 70.5 73.4 dBc
f
INPUT
= 32.5 MHz 70.3 72.7 dBc
f
INPUT
= 100 MHz 70.8 71.3 70.2 dBc
SIGNAL-TO-NOISE RATIO AND DISTORTION (SINAD)
f
INPUT
= 2.4 MHz 73.4 73.4 73.0 dBc
f
INPUT
= 9.7 MHz 69.4 73.2 dBc
f
INPUT
= 19.6 MHz 70.0 73.2 dBc
f
INPUT
= 32.5 MHz 68.4 72.6 dBc
f
INPUT
= 100 MHz
69.5
69.1
67.9
dBc
EFFECTIVE NUMBER OF BITS (ENOB)
f
INPUT
= 9.7 MHz 11.9 Bits
f
INPUT
= 19.6 MHz 11.8 Bits
f
INPUT
= 32.5 MHz 11.7 Bits
WORST HARMONIC (SECOND OR THIRD)
f
INPUT
= 9.7 MHz –89 –80 dBc
f
INPUT
= 19.6 MHz –89 –80 dBc
f
INPUT
= 32.5 MHz –83 –74 dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
INPUT
= 2.4 MHz 92.0 92.0 92.0 dBc
f
INPUT
= 9.7 MHz 80.0 89.0 dBc
f
INPUT
= 19.6 MHz 80.0 89.0 dBc
f
INPUT
= 32.5 MHz 74.0 83.0 dBc
f
INPUT
= 100 MHz 84.0 85.0 80.5 dBc