Preliminary for proposal

PLL502-01

Low Phase Noise VCXO (24MHz to 50MHz)

47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991

Rev 4/01/02 Page 4

5. DC Specification

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Supply Current, Dynamic,

with Loaded Outputs

Ouput load of 10pF

16

20

mA

Operating Voltage

3.13

3.47

V

Output High Voltage

2.4

V

Output Low Voltage

0.4

V

Output High Voltage at

CMOS level

V

Output drive current

At TTL level (High drive)

36

51

mA

At TTL level (Low drive)

12

17

mA

Short Circuit Current

±50

mA

VCXO Control Voltage

VCON

0

3.3

V

ESD Protection

Human Body Model

3000

6. Crystal Specifications

PARAMETERS

SYMBOL

MIN.

TYP.

MAX.

UNITS

Crystal Resonator Frequency

12

25

MHz

Crystal Loading Capacitance Rating

9.5

pF

C0/C1

250

-

ESR

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.