Datasheet

AD9218
Rev. C | Page 5 of 28
AC SPECIFICATIONS
V
DD
= 3.0 V, V
D
= 3.0 V; external reference, unless otherwise noted.
Table 3.
Test AD9218BST-40/-65 AD9218BST-80/-105
Parameter Temp Level Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE
1
Signal-to-Noise Ratio (SNR)
(Without Harmonics)
f
IN
= 10.3 MHz 25°C I 58/55 59/57 57/53 58/55 dB
f
IN
= Nyquist
2
25°C I –/54 59/56 55/52 57/54 dB
Signal-to-Noise and Distortion (SINAD)
(With Harmonics)
f
IN
= 10.3 MHz 25°C I 58/54 59/56 56/52 58/53 dB
f
IN
= Nyquist
2
25°C I –/53 59/55 55/51 57/53 dB
Effective Number of Bits
f
IN
= 10.3 MHz 25°C I 9.4/8.8 9.6/9.1 9.1/8.4 9.4/8.6 Bits
f
IN
= Nyquist
2
25°C I –/8.6 9.6/8.9 9/8.3 9.3/8.6 Bits
Second Harmonic Distortion
f
IN
= 10.3 MHz 25°C I –72/–66 –89/–77 –69/–60 –77/–68 dBc
f
IN
= Nyquist
2
25°C I –/–63 –89/–72 –65/–57 –76/–66 dBc
Third Harmonic Distortion
f
IN
= 10.3 MHz 25°C I –68/–62 –79/–68 –62/–57 –71/–63 dBc
f
IN
= Nyquist
2
25°C I –/–60 –78/–64 –63/–57 –73/–69 dBc
Spurious Free Dynamic Range (SFDR)
f
IN
= 10.3 MHz 25°C I –68/–62 –79/–67 –62/–57 –69/–62 dBc
f
IN
= Nyquist
2
25°C I –/–60 –78/–64 –63/–57 –70/–63 dBc
Two-Tone Intermodulation Distortion (IMD)
f
IN1
= 10 MHz, f
IN2
= 11 MHz at –7 dBFS 25°C V –74/–73 dBc
f
IN1
= 30 MHz, f
IN2
= 31 MHz at –7 dBFS 25°C V –73/–73 –77/–67 dBc
Analog Bandwidth, Full Power 25°C V 300 300 MHz
Crosstalk 25°C V –75 –75 dBc
1
AC specifications based on an analog input voltage of –0.5 dBFS at 10.3 MHz, unless otherwise noted. AC specifications for 40, 80, 105 grades are tested in 1 V p-p
range and driven differentially. AC specifications for 65 grade are tested in 2 V p-p range and driven differentially.
2
The 65, 80, and 105 grades are tested close to Nyquist for that grade: 31 MHz, 39 MHz, and 51 MHz for the 65, 80, and 105 grades, respectively.