ICS341

ICS341 Field Programmable SS VersaClock Synthesizer Description The ICS341 is a low cost, single-output, field programmable clock synthesizer. The ICS341 can generate an output frequency from 250 kHz to 200 MHz and may employ Spread Spectrum techniques to reduce system electro-magnetic interference (EMI). Using ICS’ VersaClock™ software to configure the PLL and output, the ICS341 contains a One-Time Programmable (OTP) ROM to allow field programmability. Programming features include 4 selectable configuration registers. The device employs Phase-Locked Loop (PLL) techniques to run from a standard fundamental mode, inexpensive crystal, or clock. It can replace multiple crystals and oscillators, saving board space and cost. The device also has a power-down feature that tri-states the clock outputs and turns off the PLLs when the PDTS pin is taken low. The ICS341 is also available in factory programmed custom versions for high-volume applications. Features 8-pin SOIC package Highly accurate frequency generation M/N Multiplier PLL: M = 1...2048, N = 1...1024 Output clock frequencies up to 200 MHz Four ROM locations for frequency and spread selection Spread spectrum capability for lower system EMI Center or Down Spread up to 4% total Selectable 32 kHz or 120 kHz modulation Input crystal frequency from 5 to 27 MHz Input clock frequency from 2 to 50 MHz Operating voltage of 3.3 V Advanced, low-power CMOS process For two output clocks, use the ICS342. For ...