DATASHEET
LOCO™ PLL CLOCK MULTIPLIER
ICS512
Description
Features
The ICS512 is the most cost effective way to generate
a high-quality, high frequency clock output and a
reference clock from a lower frequency crystal or clock
input. The name LOCO stands for Low Cost Oscillator,
as it is designed to replace crystal oscillators in most
electronic systems. Using Phase-Locked-Loop (PLL)
techniques, the device uses a standard fundamental
mode, inexpensive crystal to produce output clocks up
to 200 MHz. With a reference output, this chip plus an
inexpensive crystal can replace two oscillators
• Packaged as 8-pin SOIC or die
• Pb (lead ) free package
• Upgrade of popular ICS502 with:
— changed multiplier table
— higher operating frequncies
• Zero ppm multiplication error
• Easy to cascade with other 5xx series
• Input crystal frequency of 5 - 27 MHz
• Input clock frequency of 2 - 50 MHz
• Output clock frequencies up to 200 MHz
• Compatible with all popular CPUs
Stored in the chip’s ROM is the ability to generate nine
different multiplication factors, allowing one chip to
output many common frequencies (see table on page
2).
This product is intended for clock generation. It has low
output jitter (variation in the output period), but input to
output skew and jitter are not defined or guaranteed.
For applications which require defined input to output
skew, use the ICS570B.
• Duty cycle of 45/55 up to 200 MHz
• Mask option for nine selectable frequencies
• Operating voltages of 3.0 to 5.5 V
• Industrial temperature version available
• Advanced, low power CMOS process
Block Diagram
VDD
PLL Clock
Synthesis
and Control
Circuitry
CLK
REF
2
S1, S0
X1/ICLK
Crystal or
Clock input
Crystal
Oscillator
X2
Optional crystal
capacitors
GND
IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER
1
ICS512
REV H 051310
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
