308RI

Specifications

Input Frequency 5 MHz to 50 MHz No. of Inputs 1 Temperature I Output Frequency 250 kHz to 200 MHz Input Type Clock,Crystal No. of Outputs 9 Output Type LVCMOS Voltage 3.3 V Package QSOP 20 Speed NA Core Supply Voltage (VDD) 3.3 V Output Supply Voltage (VDDO) 3.3 V Peak-to-Peak Period Jitter ± 300 ps Pk-to-Pk


Description

SERIAL PROGRAM Clock Synth.
The 308RI is a versatile serially programmable, VersaClock? supported, quad PLL clock source. The 308RI can generate any frequency from 250 kHz to 200 MHz, and up to six different output frequencies simultaneously. 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 roughly 50%) are guaranteed if the output divider is not changed.

308RI includes a PDTS pin which tri-states the output clocks and powers down the entire chip.The ICS308 default for non-programmed start-up are buffered reference clock outputs on all clock output pins.

IDT VersaClock programming software allows the user to configure up to nine outputs with target frequencies, spread spectrum capabilities or buffered reference clock outputs. The VersaClock software automatically configures the PLLs for optimal overall performance.

Packaged in 20-pin SSOP (QSOP)

Available in Pb (lead) free package

Operating voltage of 3.3 V

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

Eliminates need for custom quartz oscillators

Input crystal frequency of 5 - 27 MHz

Optional programmable on-chip crystal capacitors

Output clock frequencies up to 200 MHz

Reference clock output

Power down tri-state mode

Very low jitter

click here for VersaClock Software page