AD9218
Rev. C | Page 5 of 28
AC SPECIFICATIONS
VDD = 3.0 V, VD = 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
Signal-to-Noise Ratio (SNR)
(Without Harmonics)
fIN = 10.3 MHz
25°C
I
58/55
59/57
57/53
58/55
dB
25°C
I
–/54
59/56
55/52
57/54
dB
Signal-to-Noise and Distortion (SINAD)
(With Harmonics)
fIN = 10.3 MHz
25°C
I
58/54
59/56
56/52
58/53
dB
25°C
I
–/53
59/55
55/51
57/53
dB
Effective Number of Bits
fIN = 10.3 MHz
25°C
I
9.4/8.8
9.6/9.1
9.1/8.4
9.4/8.6
Bits
25°C
I
–/8.6
9.6/8.9
9/8.3
9.3/8.6
Bits
Second Harmonic Distortion
fIN = 10.3 MHz
25°C
I
–72/–66
–89/–77
–69/–60
–77/–68
dBc
25°C
I
–/–63
–89/–72
–65/–57
–76/–66
dBc
Third Harmonic Distortion
fIN = 10.3 MHz
25°C
I
–68/–62
–79/–68
–62/–57
–71/–63
dBc
25°C
I
–/–60
–78/–64
–63/–57
–73/–69
dBc
Spurious Free Dynamic Range (SFDR)
fIN = 10.3 MHz
25°C
I
–68/–62
–79/–67
–62/–57
–69/–62
dBc
25°C
I
–/–60
–78/–64
–63/–57
–70/–63
dBc
Two-Tone Intermodulation Distortion (IMD)
fIN1 = 10 MHz, fIN2 = 11 MHz at –7 dBFS
25°C
V
–74/–73
dBc
fIN1 = 30 MHz, fIN2 = 31 MHz at –7 dBFS
25°C
V
–73/–73
–77/–67
dBc
Analog Bandwidth, Full Power
25°C
V
300
MHz
Crosstalk
25°C
V
–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.