Datasheet

AD9484
Rev. A | Page 6 of 24
SWITCHING SPECIFICATIONS
AVDD = 1.8 V, DRVDD = 1.8 V, T
MIN
= −40°C, T
MAX
= +85°C, f
IN
= −1.0 dBFS, full scale = 1.5 V, unless otherwise noted.
Table 4.
Parameter Temp Min Typ Max Unit
Maximum Conversion Rate Full 500 MSPS
Minimum Conversion Rate Full 50 MSPS
CLK+ Pulse Width High (t
CH
)
1
Full 0.9 11 ns
CLK+ Pulse Width Low (t
CL
)
1
Full 0.9 11 ns
Output (LVDS—SDR)
1
Data Propagation Delay (t
PD
) Full 0.85 ns
Rise Time (t
R
) (20% to 80%) 25°C 0.15 ns
Fall Time (t
F
) (20% to 80%) 25°C 0.15 ns
DCO Propagation Delay (t
CPD
) Full 0.6 ns
Data to DCO Skew (t
SKEW
) Full −0.07 +0.07 ns
Latency Full 15 Clock cycles
Aperture Time (t
A
) 25°C 0.85 ns
Aperture Uncertainty (Jitter, t
J
) 25°C 80 fs rms
1
See . Figure 2
Timing Diagram
N – 1
N
N + 2
N + 3
N + 4
N + 5
N + 1
CLK+
N – 15 N – 14 N – 13 N – 12 N – 11
CLK–
DCO+
DCO–
Dx+
Dx–
VIN+, VIN–
t
A
t
CH
t
CL
1/ f
S
t
CPD
t
SKEW
t
PD
09615-002
Figure 2. Timing Diagram