ICS502 LOCO™ PLL Clock Multiplier
Description
The ICS502 LOCO™ is the most cost effective way to generate a high quality...
ICS502 LOCO™ PLL Clock Multiplier
Description
The ICS502 LOCO™ is the most cost effective way to generate a high quality, high frequency clock output and a reference from a low 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 160 MHz. Stored in the chip’s ROM is the ability to generate 6 different multiplication factors, allowing one chip to output many common frequencies (see page 2).
Features
Packaged as 8 pin SOIC or die ICS’ lowest cost PLL clock plus reference 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 160 MHz Low jitter - 50 ps one sigma Compatible with all popular CPUs Duty cycle of 45/55 up to 160 MHz Operating
voltages of 3.0 to 5.5V Industrial temperature version available 25mA drive capability at TTL levels Advanced, low power
CMOS process
Block Diagram
VDD GND
2 S1, S0 PLL Clock Synthesis and Control Circuitry Output Buffer CLK
crystal or clock
X1/ICLK
Crystal Oscillator
X2
Output Buffer
REF
MDS 502 D 1 Revision 111000 Integrated Circuit Systems, Inc. 525 Race Street San Jose CA95126(408) 295-9800tel www.icst.com
ICS502 LOCO™ PLL Clock Multiplier
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