Spread Spectrum Clock Generator
• Generates a 4X low EMI spread spectrum clock of
the input frequency.
• Input frequency: 10MHz - 25MHz
• Output frequency: 40MHz - 100MHz
• Internal loop filter minimizes external components
and board space.
• Selectable Centre Spread frequency deviation:
±0.5%, ± 1.0%, ± 1.5%, ± 2.0%
• Supply Voltage :3.3V ± 0.3V
• Commercial and Industrial temperature range
• 8-pin TSSOP Package
• Low power CMOS process
PCS3P2189A is a versatile spread spectrum frequency
modulator that generates a low EMI 4x clock at the
output. PCS3P2189A offers four selectable centre
spread options of ±0.5%,±1.0%,±1.5%,±2.0%,(Refer
Spread Deviation Selection Tabnle). PCS3P2189A
reduces electromagnetic interference (EMI) at the clock
source, allowing system wide reduction of EMI of all
clock dependent signals. The PCS3P2189A allows
significant system cost savings by reducing the number
of circuit board layers, ferrite beads, and shielding that
are traditionally required to pass EMI regulations.
PCS3P2189A has spread spectrum ON/OFF option.
The PCS3P2189A uses the most efficient and optimized
modulation profile approved by the FCC and is
implemented in a proprietary all digital method.
PCS3P2189A is targetted for LCD panel application
CLKIN / XIN
S0 S1 SSON VDD
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018
Notice: The information in this document is subject to change without notice.