(Preliminary)

PL680-37/38/39

38-640MHz Low Phase Noise XO

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 11/28/05 Page 4

ELECTRICAL SPECIFICATIONS

1. Absolute Maximum Ratings

PARAMETERS

SYMBOL

MIN.

MAX.

UNITS

Supply Voltage

4.6

V

Input Voltage, dc

-0.5

V

Output Voltage, dc

-0.5

V

Storage Temperature

-65

150

°C

Ambient Operating Temperature*

-40

85

°C

Junction Temperature

125

°C

Lead Temperature (soldering, 10s)

260

°C

ESD Protection, Human Body Model

2

kV

Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the

device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other

conditions above the operational limits noted in this specification is not implied.

* Note: Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.

2. Crystal Specifications

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Crystal Resonator Frequency

Parallel Fundamental Mode

19

40

MHz

Crystal Loading Rating

17.7

pF

Crystal Shunt Capacitance

5

pF

Recommended ESR

AT cut

30

Ω

Note: Crystal Loading rating: 17.7pF is the loading the crystal sees from the XO chip. It is assumed that the crystal will be at nominal frequency at this

load. If the crystal requires less load to be at nominal frequency, then a capacitor can placed in series with the crystal. If the crystal requires more

load to be at nominal frequency, capacitors can be placed from XIN and XOUT to ground. This however may reduce the oscillator gain.

3. General Electrical Specifications

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

PECL/LVDS/CMOS

38MHz<Fout<320MHz

65/45/30

Supply Current,

Dynamic (with

Loaded Outputs)

PECL/LVDS

320MHz<Fout<640MHz

90/70

mA

Operating Voltage

2.25

3.63

V

Output Clock

Duty Cycle

@ 1.25V (LVDS)

45

45

45

50

50

50

55

55

55

%

Short Circuit

Current

±50

mA

Note: CMOS operation is not advised above 200MHz with 15pF load; and 320MHz with 10pF load.