Datasheet

AD9516-3 Data Sheet

Rev. C | Page 10 of 80

CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK GENERATION USING INTERNAL VCO)

Table 8.

Parameter Min Typ Max Unit Test Conditions/Comments

LVPECL OUTPUT ABSOLUTE TIME JITTER

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

VCO = 1.97 GHz; LVPECL = 245.76 MHz; PLL LBW = 143 kHz 129 fs rms Integration BW = 200 kHz to 10 MHz

303 fs rms Integration BW = 12 kHz to 20 MHz

VCO = 1.97 GHz; LVPECL = 122.88 MHz; PLL LBW = 143 kHz 135 fs rms Integration BW = 200 kHz to 10 MHz

302 fs rms Integration BW = 12 kHz to 20 MHz

VCO = 1.97 GHz; LVPECL = 61.44 MHz; PLL LBW = 143 kHz 179 fs rms Integration BW = 200 kHz to 10 MHz

343 fs rms Integration BW = 12 kHz to 20 MHz

CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK CLEANUP USING INTERNAL VCO)

Table 9.

Parameter Min Typ Max Unit Test Conditions/Comments

LVPECL OUTPUT ABSOLUTE TIME JITTER 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

VCO = 1.87 GHz; LVPECL = 622.08 MHz; PLL LBW = 125 Hz 400 fs rms Integration BW = 12 kHz to 20 MHz

VCO = 1.87 GHz; LVPECL = 155.52 MHz; PLL LBW = 125 Hz 390 fs rms Integration BW = 12 kHz to 20 MHz

VCO = 1.97 GHz; LVPECL = 122.88 MHz; PLL LBW = 125 Hz 485 fs rms Integration BW = 12 kHz to 20 MHz

CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK GENERATION USING EXTERNAL VCXO)

Table 10.

Parameter Min Typ Max Unit Test Conditions/Comments

LVPECL OUTPUT ABSOLUTE TIME JITTER Application example based on a typical setup

using an external 245.76 MHz VCXO (Toyocom

TCO-2112); reference = 15.36 MHz; R = 1

LVPECL = 245.76 MHz; PLL LBW = 125 Hz

fs rms

Integration BW = 200 kHz to 5 MHz

77 fs rms Integration BW = 200 kHz to 10 MHz

109 fs rms Integration BW = 12 kHz to 20 MHz

LVPECL = 122.88 MHz; PLL LBW = 125 Hz 79 fs rms Integration BW = 200 kHz to 5 MHz

114 fs rms Integration BW = 200 kHz to 10 MHz

163 fs rms Integration BW = 12 kHz to 20 MHz

LVPECL = 61.44 MHz; PLL LBW = 125 Hz 124 fs rms Integration BW = 200 kHz to 5 MHz

176 fs rms Integration BW = 200 kHz to 10 MHz

259 fs rms Integration BW = 12 kHz to 20 MHz