Datasheet

AD9248
Rev. B | Page 5 of 48
AC SPECIFICATIONS
AVDD = 3 V, DRVDD = 2.5 V, maximum sample rate, CLK_A = CLK_B; A
IN
= −0.5 dBFS differential input, 1.0 V external reference,
T
MIN
to T
MAX
, DCS Enabled, unless otherwise noted.
Table 2.
Test AD9248BST/BCP-20 AD9248BST/BCP-40 AD9248BST/BCP-65
Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit
SIGNAL-TO-NOISE RATIO (SNR)
f
INPUT
= 2.4 MHz Full V 73.4 73.1 72.8 dB
25°C IV 73.1 73.7 72.8 73.4 72.3 73.1 dB
f
INPUT
= 9.7 MHz Full V 72.9 dB
25°C IV 72.4 73.1 dB
f
INPUT
= 19.6 MHz Full V 72.7 dB
25°C IV 72.3 72.9 dB
f
INPUT
= 35 MHz Full V 71.5 dB
25°C IV 71.2 71.6 dB
f
INPUT
= 100 MHz 25°C V 70 69.5 69.0 dB
SIGNAL-TO-NOISE AND DISTORTION
RATIO (SINAD)
f
INPUT
= 2.4 MHz Full V 73.0 72.8 72.5 dB
25°C IV 72.2 73.2 72.0 73.0 71.7 72.7 dB
f
INPUT
= 9.7 MHz Full V 72.0 dB
25°C IV 70.9 72.2 dB
f
INPUT
= 19.6 MHz Full V 72.1 dB
25°C IV 71.0 72.3 dB
f
INPUT
= 35 MHz Full V 70.9 dB
25°C IV 70.0 71.0 dB
f
INPUT
= 100 MHz 25°C V 69.5 69.0 68.5 dB
EFFECTIVE NUMBER OF BITS (ENOB)
f
INPUT
= 2.4 MHz Full V 11.8 11.8 11.8 Bits
25°C IV 11.7 11.8 11.7 11.8 11.6 11.8 Bits
f
INPUT
= 9.7 MHz Full V 11.7 Bits
25°C IV 11.5 11.7 Bits
f
INPUT
= 19.6 MHz Full V 11.7 Bits
25°C IV 11.5 11.7 Bits
f
INPUT
= 35 MHz Full V 11.5 Bits
25°C IV 11.3 11.5 Bits
f
INPUT
= 100 MHz 25°C V 11.3 11.2 11.2 Bits
WORST HARMONIC (SECOND or THIRD)
f
INPUT
= 2.4 MHz Full V 86.0 85.0 84.0 dBc
25°C IV 77.5 87.5 77.5 86.0 77.5 86.0 dBc
f
INPUT
= 9.7 MHz Full V 83.0 dBc
25°C I 76.1 84.0 dBc
f
INPUT
= 19.6 MHz Full V 83.0 dBc
25°C I 76.0 84.0 dBc
f
INPUT
= 35 MHz Full V 80.0 dBc
25°C I 73.0 80.5 dBc