ICS307-01 Datasheet | Integrated Circuit Systems

Description The ICS307-01 and ICS307-02 are versatile serially programmable clock sources which take up very little board space. They can generate any frequency from 6 to 200 MHz and have a second configurable output. The outputs can be reprogrammed on the fly and will lock to a new frequency in 10 ms or less. Smooth transitions (in which the clock duty cycle remains near 50%) are guaranteed if the output divider is not changed. The devices includes a PDTS pin which tri-states the output clocks and powers down the entire chip. The ICS307-02 features a default clock output at start-up and is remended for all new designs. 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 nor guaranteed. For applications which require defined input to output skew, use the ICS527-01. Features - Packaged in 16-pin (150 mil wide) SOIC - ICS307M-02 and -02I available in Pb (lead) free package - Highly accurate frequency generation - Serially programmable: user determines the output frequency via a 3 wire interface - Eliminates need for custom quartz - Input crystal frequency of 5 - 27 MHz - Output clock frequencies up to 200 MHz - Power down tri-state mode - Very low jitter - Operating voltage of 3.3 V or 5 V - 25 m A drive capability at TTL levels - Industrial temperature version available Block Diagram SCLK DATA STROBE X1/ICLK Crystal or clock input X2 9 V8:V0 Shift Register 2 3 2 7 C1:C0 S2:S0 F1:F0 R6:R7 Crystal Oscillator Reference Divider Optional crystal capacitors VCO Divider Phase parator, Charge Pump, and Loop Filter Output...