Description

The ICS309 is a versatile serially-programmable, triple PLL with spread spectrum clock source. The ICS309 can generate any frequency from 250kHz to 200 MHz, and up to 6 different output frequencies simultaneously. The outputs can be reprogrammed on-the-fly, and will lock to a new frequency in 10 ms or less.

Features

• Packaged in 20-pin SSOP (QSOP)

• Highly accurate frequency generation

• M/N Multiplier PLL: M = 1..2048, N = 1..1024

• Serially programmable: user determines the output frequency via a 3-wire interface

• Spread Spectrum frequency modulation for reduced system EMI

• Center or Down Spread up to 4 total

• Selectable 32 kHz and 120 kHz modulation

• Eliminates need for custom quartz oscillators

• Input crystal frequency of 5 - 27 MHz

• Input clock frequency of 3 - 50 MHz

• Output clock frequencies up to 200 MHz

• Operating voltage of 3.3 V

• Up to 9 reference clock outputs

• Power down tri-state mode

• Very low jitter