January 2007

PCS3P2191A

rev 0.1

Spread Spectrum Clock Generator

5 of 8

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

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

Crystal