Datasheet
ADN4670 Data Sheet
Rev. A | Page 4 of 12
LVDS SWITCHING CHARACTERISTICS
V
DD
= 2.375 V to 2.625 V; all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 3.
Parameter Symbol Min Typ Max
1
Unit Conditions/Comments
Propagation Delay Low to High t
PLHx
2 3 ns
From CLK0/CLK0
or CLK1/ CLK1 to any Qx/Qx
Propagation Delay High to Low t
PHLx
2 3 ns
From CLK0/CLK0
or CLK1/ CLK1 to any Qx/Qx
Duty Cycle t
DUTY
45 55 %
From CLK0/CLK0
or CLK1/ CLK1 to any Qx/Qx
Output Skew
2
t
SK(O)
30 ps
Any Qx/Qx
Pulse Skew
3
t
SK(P)
50 ps
Any Qx/Qx
Part-to-Part Output Skew
4
t
SK(PP)
600 ps
Any Qx/Qx
Output Rise Time t
r
350 ps
Any Qx/Qx
, 20% to 80%, R
L
= 100 Ω C
L
= 5 pF
Output Fall Time t
f
350
Any Qx/Qx
, 80% to 20%, R
L
= 100 Ω C
L
= 5 pF
Maximum Input Frequency f
CLK
900 1100 MHz
From CLK0/CLK0
or CLK1/ CLK1 to any Qx/Qx
1
Guaranteed by design and characterization.
2
Output skew is defined as the difference between the largest and smallest values of T
PLHx
within a device or the difference between the largest and smallest values of
T
PHLx
within a device, whichever of the two is greater.
3
Pulse skew is defined as the magnitude of the maximum difference between t
PLH
and t
PHL
for any channel of a device, that is, |t
PHLx
– t
HLPx
|.
4
Part-to-part output skew is defined as the difference between the largest and smallest values of T
PLHx
across multiple devices or the difference between the largest and
smallest values of T
PHLx
across multiple devices, whichever of the two is greater.
t
PLH0
t
PLH1
t
PLH9
t
PHL0
t
PHL1
t
PHL9
C
LK
C
LK
Q0
Q0
Q1
Q1
Q9
Q9
08870-002
Figure 2. Waveforms for Calculation of t
SK(O)
and t
SK(PP)