Texas Instruments LMK01000 Evaluation Board LMK01000EVAL/NOPB LMK01000EVAL/NOPB Datenbogen
Produktcode
LMK01000EVAL/NOPB
10
70
FREQUENCY (MHz)
10
5
0
-5
-10
-15
-20
PO
W
ER
(
d
Bm
)
50
80
Minimum Recommended
Power for Differential
Operation
20
30
40
60
100
90
Minimum Recommended
Power for Single-Ended
Operation
0.1
P
F
0.1
P
F
LMK
Input
1
0
0
:
100
:
Trace
(Differential)
Clock Source
SNAS437G – FEBRUARY 2008 – REVISED OCTOBER 2009
Figure 13. Differential Sine Wave Input
shows the recommended power level for sine wave operation for both differential and single-ended
sources over frequency. The part will operate at power levels below the recommended power level, but as power
decreases the PLL noise performance will degrade. The VCO noise performance will remain constant. At the
recommended power level the PLL phase noise degradation from full power operation (8 dBm) is less than 2 dB.
decreases the PLL noise performance will degrade. The VCO noise performance will remain constant. At the
recommended power level the PLL phase noise degradation from full power operation (8 dBm) is less than 2 dB.
Figure 14. Recommended OSCin Power for Operation with a Sine Wave Input
MORE THAN EIGHT OUTPUTS WITH AN LMK01000 FAMILY DEVICE
The LMK01000 family device can be used in conjunction with a LMK02000, LMK03000, LMK04000, or even
another LMK01000 device in order to produce more than 8 outputs. When doing this, attention needs to be given
to how the frequencies are assigned for each output to eliminate synchronization issues. Refer to AN-1864 for
more details.
another LMK01000 device in order to produce more than 8 outputs. When doing this, attention needs to be given
to how the frequencies are assigned for each output to eliminate synchronization issues. Refer to AN-1864 for
more details.
GLOBAL DELAY THROUGH AN LMK01000 FAMILY DEVICE
The delay from CLKin to CLKout is determinsic, but can vary based on the engaged delays and divides as
discussed in Section 2.3.2 for the CLKoutX_MUX bit. In addition, there can be variations based on voltage,
temperature, and frequency. AN-1864 discusses this global delay in more detail.
discussed in Section 2.3.2 for the CLKoutX_MUX bit. In addition, there can be variations based on voltage,
temperature, and frequency. AN-1864 discusses this global delay in more detail.
20
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