General Description

The ICS9117-01 is a low-cost, high-performance frequency generator designed to support fax/data modem systems. Datapump and UART clocks are synthesized from a microcontroller crystal using high-accuracy, low-jitter PLLs, meeting the frequency tolerance and -96dB signal-to-noise ratios required by 16-bit DSP modem systems. Fast output clock edge rates minimize board induced jitter.

Features

• Generates the 14.7456 MHz microcontroller, 40.320 MHz datadump and 1.84320 UART clocks

• Less than ±80 ppm frequency variation including temperature, voltage, load and aging tolerances

• Single crystal reference minimizes crystal reliability and inventory issues

• 80 ps one sigma jitter maintains 16-bit performance

• Output rise/fall times less than 1.5 ns

• On-chip loop filter components

• 3.0 V - 5.5 V supply range

• 8-pin, 150-mil SOIC package

Applications

• Specifically designed to support the high performance of fax/data modems