Texas Instruments Clock Jitter Cleaner With Dual Cascaded PLLs and Integrated 2.5 GHz VCO LMK04806BEVAL/NOPB LMK04806BEVAL/NOPB Datenbogen
Produktcode
LMK04806BEVAL/NOPB
L M K 0 4 8 X X E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S
46
LMK04803B CLKout Phase Noise
Figure 20: LMK04803B CLKout Phase Noise
Table 20: LMK04803B Phase Noise (dBc/Hz) Phase Noise and RMS Jitter (fs)
Offset
983.04 MHz
LVDS
983.04 MHz
LVPECL
491.52 MHz
LVDS
491.52 MHz
LVPECL
100 Hz
-93.0
-95.0
-99.7
-99.5
1 kHz
-111.3
-113.1
-117.1
-118.3
10 kHz
-121.8
-121.1
-126.9
-127.4
100 kHz
-122.3
-121.9
-127.8
-128.3
800 kHz
-134.9
-134.5
-140.3
-140.8
1 MHz
-136.8
-136.3
-142.0
-142.7
10 MHz
-150.3
-150.6
-152.0
-154.2
20 MHz
-150.4
-151.1
-152.6
-154.6
RMS Jitter (fs)
10 kHz to 20 MHz
103.8
107.4
116.0
108.1
RMS Jitter (fs)
100 Hz to 20 MHz
116.1
116.2
127.4
116.8
For the LMK04803B, the internal VCO frequency is 1966.08 MHz. The divide-by-8 CLKout
frequency is 245.76 MHz, and the divide-by-16 CLKout frequency is 122.88 MHz.