PLL502-50

VCXO IC Die for 20 to 52MHz Parallel Resonant Crystals

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/17/04 Page 3

4. 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

500

ppm

CLK output pullability

VCON=1.65V

±1.65V

±200

ppm

VCXO Tuning Characteristic

150

ppm/V

Pull range linearity

10

%

VCON input impedance

80

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.

5. Crystal Specifications

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Crystal Resonator Frequency

Parallel Fundamental Mode

20

52

MHz

Crystal Loading Rating

At Vcon = 1.65V

9.5

pF

Crystal Pullability

AT cut

250

-

Recommended ESR

AT cut

30

Ω

Note: Crystal Loading rating: 9.5pF is the loading the crystal sees from the VCXO chip at VCON = 1.65V. It is assumed that the crystal will be at

nominal frequency at this load. If the crystal requires more load to be at nominal frequency, the additional load must be added externally. This

however may reduce the pull range.

6. Jitter specifications

PARAMETERS

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Period jitter RMS

51.84MHz

2.3

ps

Period jitter peak-to-peak

51.84MHz

18

ps

Integrated jitter RMS

Integrated 12 kHz to 20 MHz at 51.84MHz

1

ps

7. Phase noise specifications

PARAMETERS

FREQUENCY

@10Hz

@100Hz

@1kHz

@10kHz

@100kHz

UNITS

Phase Noise relative

to carrier

51.85MHz

-65

-90

-120

-140

-147

dBc/Hz

Note: Phase Noise at VCON = 0V