May 2007
rev 0.4
ASM3P622S00A/B/J/E/K
Low Frequency Timing-Safe™ Peak EMI reduction IC
General Features
one reference input and drives out one low-skew clock.
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Low Frequency Clock distribution with Timing-
All parts have on-chip PLLs that lock to an input clock on
the XIN/CLKIN pin. The PLL feedback is on-chip and is
obtained from the CLKOUT pad, internal to the device.
Safe™ Peak EMI Reduction
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Input frequency range: 4MHz - 20MHz
Zero input - output propagation delay
Low-skew outputs
Multiple ASM3P622S00E/K devices can accept the same
input clock and distribute it. In this case, the skew between
the outputs of the two devices is guaranteed to be less than
700pS.
• Output-output skew less than 250pS
• Device-device skew less than 700pS
Less than 200pS cycle-to-cycle jitter
Available in 16pin, 150mil SOIC, 4.4mm TSSOP
(ASM3P622S00E/K), and in 8pin, 150 mil SOIC,
4.4mm TSSOP Packages (ASM3P622S00A/B/J)
3.3V Operation
Industrial temperature range
Advanced CMOS technology
The First True Drop-in Solution
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All outputs have less than 200pS of Cycle-to-cycle jitter.
The input and output propagation delay is guaranteed to be
less than ±350pS, and the output-to-output skew is
guaranteed to be less than 250pS.
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Refer “Spread Spectrum Control and Input-Output Skew
Functional Description
Table”
for deviations and Input-Output Skew for
ASM3P622S00A/B/J and ASM3P622S00E/K devices
ASM3P622S00A/B/J/E/K is a versatile, 3.3V Zero-delay
buffer designed to distribute low frequency Timing-Safe™
clocks with Peak EMI reduction. ASM3P622S00E/K
accepts one reference input and drives out eight low-skew
The ASM3P622S00A/B/J and ASM3P622S00E/K are
available in two different packages, as shown in the
ordering information table.
clocks. It is available in
a
16pin Package. The
ASM3P622S00A/B/J is the eight-pin version and accepts
VDD
SSON
SS%
Block Diagram
PLL
Modulation
XIN/CLKIN
XOUT
Reference
Divider
Crystal
Feedforward
Phase
Loop
VCO
Feedback
CLKOUT
GND
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200 Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018
www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.