ICS843020-01

Integrated Circuit Systems, Inc. ICS843020-01 www.DataSheet4U.com FEMTOCLOCKS™ 680MHZ, CRYSTAL-TO3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER FEATURES Dual differential 3.3V LVPECL outputs Selectable crystal oscillator interface or LVCMOS/LVTTL TEST_CLK Output frequency range: 70MHz to 680MHz Crystal input frequency range: 12MHz to 32MHz VCO range: 560MHz to 680MHz Parallel or serial interface for programming feedback and output dividers Input P_DIV under parallel load control RMS phase jitter at 156.25MHz (1.875MHz to 20MHz): 0.49ps (typical), P_DIV = ÷1 3.3V supply voltage 0°C to 70°C ambient operating temperature Lead-Free package fully RoHS compliant GENERAL DESCRIPTION The ICS843020-01 is a general purpose, dual output Crystal-to-3.3V Differential LVPECL High FreHiPerClockS™ quency Synthesizer and a member of the FemtoClocks™ family of High Performance Clock Solutions from ICS. The ICS843020-01 is based on ICS’ 3rd generation VCO technology and is capable of sub1ps RMS Phase Jitter performance, making it ideal for use in 10 Gigabit Ethernet, 10 Gigabit Fibre Channel, SONET and Serial ATA applications. ICS The ICS843020-01 is a highly flexible programmable synthesizer capable of generating output frequencies over a range of 70MHz to 680MHz. The output frequency can be programmed in small step sizes as low as 250kHz when using a 16MHz crystal, ÷8 input divider, and output divider = ÷8. BLOCK DIAGRAM VCO_SEL XTAL_SEL TEST_CLK XTAL_IN OSC XTAL_O...