ICS650-44

SPREAD SPECTRUM CLOCK SYNTHESIZER DATASHEET ICS650-44 Description The ICS650-44 is a spread spectrum clock synthesizer intended for video projector and digital TV applications. It generates three copies of an EMI optimized 50 MHz clock signal (EMI peak reduction of 7 to 14 dB on 3rd through 19th harmonics) through the use of Spread Spectrum techniques from a 25 MHz crystal or clock input. The modulation rate is 50 kHz. Features Packaged in 16-pin TSSOP (173 mil) Supply voltages: VDD = 3.3 V, VDDO = 2.5 V Peak-to-peak jitter: ±125 ps typ Output duty cycle 45/55% (worst case) 25 MHz crystal or reference clock input Zero (0) ppm frequency error on all output clocks Advanced, low-power CMOS process Industrial temperature range (-40 to +85°C) Pb (lead) free package Block Diagram 25 MHz crystal or clock input X1/CLKIN X2 External capacitors are required with a crystal input. FS3:0 Crystal OSC Control Logic VDD 3 VDDO PLL with Spread Spectrum 50M...