ASM3P622S00A Datasheet, PDF (1/16 Pages) PulseCore Semiconductor – Low Frequency Timing-Safe™ Peak EMI reduction IC

May 2007
rev 0.4
ASM3P622S00A/B/J/E/K
Low Frequency Timing-Safe™ Peak EMI reduction IC
General Features
• Low Frequency Clock distribution with Timing-
Safe™ Peak EMI Reduction
• Input frequency range: 4MHz - 20MHz
• Zero input - output propagation delay
• Low-skew outputs
• 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
Functional Description
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
clocks. It is available in a 16pin Package. The
ASM3P622S00A/B/J is the eight-pin version and accepts
Block Diagram
V_DD
SSON SS%
one reference input and drives out one low-skew clock.
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.
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.
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.
Refer “Spread Spectrum Control and Input-Output Skew
Table” for deviations and Input-Output Skew for
ASM3P622S00A/B/J and ASM3P622S00E/K devices
The ASM3P622S00A/B/J and ASM3P622S00E/K are
available in two different packages, as shown in the
ordering information table.
XIN/CLKIN
XOUT
Crystal
Oscillator
Reference
Divider
Feedback
Divider
Modulation
Phase
Detector
Loop
Filter
PLL
VCO
Feedforward
Divider
CLKOUT
GND
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200 Campbell, CA 95008 • Tel: [phone] • Fax: [phone]
www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.