ICS341 Datasheet | Integrated Circuit Solution

Field Programmable SS Versa Clock Synthesizer Description The ICS341 is a low cost, single-output, field programmable clock synthesizer. The ICS341 can generate an output frequency from 250 k Hz to 200 MHz and may employ Spread Spectrum techniques to reduce system electro-magnetic interference (EMI). Using ICS’ Versa Clock™ 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 k Hz or 120 k Hz 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 three output clocks, see the ICS343. For more than three outputs, see the ICS345 or ICS348. Available in Pb (lead) free packaging Block Diagram S1:0 Crystal or clock input X1/ICLK OTP ROM with PLL Divider Values PLL Clock Synthesis, Spred Spectrum and Control Circuitry Crystal Oscillator X2 External capacitors are required with a crystal input. GND PDTS (output and PLL) MDS 341 E Integrated Circuit Systems, Inc. - 1 525 Race Street, San Jose, CA 95126 - Revision 090704 tel...