ICS840031I

Integrated Circuit Systems, Inc. ICS840031I FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR FEATURES (1) LVCMOS/LVTTL output Crystal oscillator interface designed for a 24.576MHz, 18pF parallel resonant crystal Output frequency: 98.304MHz (typical) VCO range: 490MHz to 640MHz RMS phase jitter @ 98.304MHz, using a 24.576MHz crystal (12KHz - 20MHz): 0.75ps (typical) RMS phase noise at 98.304MHz (typical) Offset Noise Power 100Hz .............. -103.3 dBc/Hz 1KHz .............. -126.2 dBc/Hz 10KHz .............. -134.2 dBc/Hz 100KHz .............. -132.9 dBc/Hz 3.3V core/1.8V output operating supply Lead-Free fully RoHS compliant -40°C to 85°C ambient operating temperature GENERAL DESCRIPTION The ICS840031I is an IEEE 1394b Clock Generator and a member of the HiPerClocksTM HiPerClockS™ family of high performance devices from ICS. The ICS840031I uses a 24.576MHz crystal to synthesize 98.304MHz. The ICS840031I has excellent phase jitter performance, from 12KHz – 20MHz integration range. The ICS840031I is packaged in a small 8-pin SOIC, making it ideal for use in systems with limited board space. www.DataSheet4U.com ICS FREQUENCY TABLE Inputs Crystal Frequency (MHz) 24.576 Output Frequency (MHz) 98.304 BLOCK DIAGRAM PLL_SEL (Pullup) PIN ASSIGNMENT 0 VDD XTAL_OUT XTAL_IN VDDA 1 2 3 4 8 7 6 5 VDDO Q0 GND PLL_SEL XTAL_IN Q0 OSC XTAL_OUT Phase Detector VCO 589.824MHz w/ 24.576MHz Ref. ÷6 1 ICS840031I 8-Lead SOIC 3.90mm x 4.90mm x 1.37mm package body ...