Peak EMI Reducing Solution

5 of 8

November 2006

ASM3P2853A

rev 1.3

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

AC Electrical Characteristics

Parameter

Symbol

Conditions/ Description

Min

Typ

Max

Unit

Rise Time*

Measured from 20% to 80% of the

signal level

-

2

-

nS

Fall Time*

Measured from 80% to 20% of the

signal level

-

1.5

-

nS

Jitter

(Cycle to Cycle)

-

250

-

pS

Jitter

(Period)

-

175

-

pS

Clock Duty Cycle

Ratio of pulse width (as measured from

rising edge to next falling edge at

45

50

55

%

Typical Application Schematic using ASM3P2853A Device

Modulated 50MHz output

1

2

3

4

XIN

XOUT

USB Clock

5

6

7

8

PWDNB

SSONB

50MHz

25MHz

fundamental

Crystal

+2.5V

ASM3P2853A

Un-modulated 48MHz output

27pF

27pF

0.1uF