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ICS843SDN Datasheet(PDF) 1 Page - Integrated Device Technology |
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ICS843SDN Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 14 page FEMTOCLOCK™ CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR ICS843SDN IDT™ / ICS™ 3.3V LVPECL CLOCK GENERATOR 1 ICS843SDNAG REV. A FEBRUARY 19, 2009 General Description The ICS843SDN is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM family of high performance devices from IDT. The ICS843SDN uses a 24MHz crystal to synthesize 120MHz. The ICS843SDN uses IDT’s 3rd generation low phase noise VCO technology, and can achieve <1ps rms phase jitter performance over the 12kHz – 20MHz integration range. The ICS843SDN is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space. Features • One differential 3.3V LVPECL output • Crystal oscillator interface designed for 23.2MHz – 30MHz, 18pF parallel resonant crystal • Output frequency range: 116MHz – 150MHz • VCO range: 580MHz – 750MHz • Output duty cycle range: 47% – 53% • RMS phase jitter @ 120MHz, using a 24MHz crystal (12kHz – 20MHz): 0.81ps (typical) • Full 3.3V supply mode • 0°C to 70°C ambient operating temperature • Industrial temperature information available upon request • Available in lead-free (RoHS 6) package Table 1. Frequency Table - Typical Applications HiPerClockS™ ICS Crystal Frequency (MHz) Output Frequency (MHz) 25 125 24 120 ICS843SDN 8 Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body G Package Top View Pin Assignment 1 2 3 4 8 7 6 5 VCCA VEE XTAL_OUT XTAL_IN VCC Q nQ nc OSC Phase Detector VCO ÷5 ÷25 (fixed) Q nQ XTAL_IN XTAL_OUT 25MHz Block Diagram |
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