February 2005

ASM3P2508SP

rev 0.4

Clock Synthesizer and Frequency Generator with Peak EMI reduction

4 of 7

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

25 MHz

Frequency tolerance

± 25 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

25

Ω

R1 = 510Ω

C1 = 27 pF

C2 = 27 pF

Crystal