AD9518_2_15 Datasheet, PDF (8/64 Pages) Analog Devices – 6-Output Clock Generator with Integrated 2.2 GHz VCO

AD9518-2
Data Sheet
CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK GENERATION USING INTERNAL VCO)
Table 8.
Parameter
LVPECL OUTPUT ABSOLUTE TIME JITTER
VCO = 2.21 GHz; LVPECL = 245.76 MHz; PLL LBW = 138 kHz
VCO = 2.21 GHz; LVPECL = 122.88 MHz; PLL LBW = 138 kHz
VCO = 2.21 GHz; LVPECL = 61.44 MHz; PLL LBW = 138 kHz
Min Typ Max Unit Test Conditions/Comments
Application example based on a typical
setup where the reference source is clean,
so a wider PLL loop bandwidth is used;
reference = 15.36 MHz; R = 1
146
fs rms Integration BW = 200 kHz to 10 MHz
329
fs rms Integration BW = 12 kHz to 20 MHz
151
fs rms Integration BW = 200 kHz to 10 MHz
329
fs rms Integration BW = 12 kHz to 20 MHz
203
fs rms Integration BW = 200 kHz to 10 MHz
376
fs rms Integration BW = 12 kHz to 20 MHz
CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK CLEANUP USING INTERNAL VCO)
Table 9.
Parameter
LVPECL OUTPUT ABSOLUTE TIME JITTER
VCO = 2.18 GHz; LVPECL = 155.52 MHz; PLL LBW = 125 Hz
VCO = 2.21 GHz; LVPECL = 122.88 MHz; PLL LBW = 125 Hz
Min Typ Max Unit
515
fs rms
570
fs rms
Test Conditions/Comments
Application example based on a typical
setup where the reference source is
jittery, so a narrower PLL loop bandwidth
is used; reference = 10.0 MHz; R = 20
Integration BW = 12 kHz to 20 MHz
Integration BW = 12 kHz to 20 MHz
CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK GENERATION USING EXTERNAL VCXO)
Table 10.
Parameter
LVPECL OUTPUT ABSOLUTE TIME JITTER
LVPECL = 245.76 MHz; PLL LBW = 125 Hz
LVPECL = 122.88 MHz; PLL LBW = 125 Hz
LVPECL = 61.44 MHz; PLL LBW = 125 Hz
Min Typ Max Unit
54
fs rms
77
fs rms
109
fs rms
79
fs rms
114
fs rms
163
fs rms
124
fs rms
176
fs rms
259
fs rms
Test Conditions/Comments
Application example based on a typical
setup using an
external 245.76 MHz VCXO (Toyocom
TCO-2112);
reference = 15.36 MHz; R = 1
Integration BW = 200 kHz to 5 MHz
Integration BW = 200 kHz to 10 MHz
Integration BW = 12 kHz to 20 MHz
Integration BW = 200 kHz to 5 MHz
Integration BW = 200 kHz to 10 MHz
Integration BW = 12 kHz to 20 MHz
Integration BW = 200 kHz to 5 MHz
Integration BW = 200 kHz to 10 MHz
Integration BW = 12 kHz to 20 MHz
Rev. C | Page 8 of 64