PLL520-28/-29

Low Phase Noise VCXO (for 120-200MHz Fund Xtal)

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/20/04 Page 3

3. Voltage Control Crystal Oscillator (3.3V)

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

VCXO Stabilization Time *

From power valid

10

ms

VCXO Tuning Range

0V

≤ VCON ≤ 3.3V

200*

ppm

CLK output pullability

VCON=1.65V,

±1.65V

±100*

ppm

On-chip Varicaps control range

VCON = 0 to 3.3V

4 – 18*

pF

Linearity

10*

%

VCXO Tuning Characteristic

65

ppm/V

VCON input impedance

60

k

Ω

VCON modulation BW

0V

≤ VCON ≤ 3.3V, -3dB

25

kHz

Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits.

4. General Electrical Specifications

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Supply Current (Loaded

Outputs)

PECL/LVDS

100/80

mA

Operating Voltage

2.97

3.63

V

Output Clock Duty Cycle

@ 1.25V (LVDS)

45

45

50

50

55

55

%

Short Circuit Current

±50

mA

5. Jitter Specifications

PARAMETERS

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Period jitter RMS

2.5

Period jitter peak-to-peak

At 155.52MHz, with capacitive decoupling

between VDD and GND.

18.5

ps

Accumulated jitter RMS

2.5

Accumulated jitter peak-to-peak

At 155.52MHz, with capacitive decoupling

between VDD and GND. Over 10,000

cycles.

24

ps

Integrated jitter RMS at 155MHz

Integrated 12 kHz to 20 MHz

0.3

ps

6. Phase Noise Specifications

PARAMETERS

FREQUENCY

@10Hz

@100Hz

@1kHz

@10kHz

@100kHz

UNITS

Phase Noise relative

to carrier

155.52MHz

-75

-95

-125

-140

-145

dBc/Hz

Note: Phase Noise measured at VCON = 0V