September 2006

PCS3P2189A

rev 0.1

Spread Spectrum Clock Generator

4 of 7

Notice: The information in this document is subject to change without notice.

AC Electrical Characteristics

Symbol

Parameter

Min

Typ

Max

Unit

Input frequency

15

MHz

Output frequency

60

MHz

Output rise time ( Measured from 0.8V to 2.0V )

-

TBD

-

nS

Output fall time ( Measured from 2.0V to 0.8V )

-

TBD

-

nS

Jitter (Cycle to cycle), Ta=25°C and VDD=3.3V

No Load Capacitance

-

-

TBD

pS

Output duty cycle

40

50

60

%

Modulation Frequency ,

Input Frequency =15MHz

32.4

KHz

Typical Crystal Oscillator Circuit

Typical Crystal Specifications

Fundamental AT cut parallel resonant crystal

Nominal frequency

15MHz

Frequency tolerance

± 50 ppm or better at 25°C

Operating temperature range

-25°C to +85°C

Storage temperature

-40°C to +85°C

Load capacitance

18pF

Shunt capacitance

7pF maximum

ESR

25Ω

R1 = 510Ω

C1

C2