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ICS84321AYLF Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS84321AYLF Datasheet(HTML) 1 Page - Integrated Circuit Systems |
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1 / 18 page  84321AY www.icst.com/products/hiperclocks.html REV. B JUNE 9, 2005 1 Integrated Circuit Systems, Inc. ICS84321 260MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER GENERAL DESCRIPTION The ICS84321 is a general purpose, dual output Crystal-to-3.3V Differential LVPECL High Frequency Synthesizer and a member of the HiPerClockS™ family of High Performance Clock Solutions from ICS.The ICS84321 has a selectable TEST_CLK or crystal inputs.The VCO operates at a frequency range of 620MHz to 780MHz. The VCO frequency is programmed in steps equal to the value of the input reference or crystal frequency. The VCO and output frequency can be programmed using the serial or parallel interfaces to the configuration logic. BLOCK DIAGRAM PIN ASSIGNMENT FEATURES • Dual differential 3.3V LVPECL outputs • Selectable crystal oscillator interface or LVCMOS/LVTTL TEST_CLK • Output frequency range: 103.3MHz to 260MHz • Crystal input frequency range: 14MHz to 40MHz • VCO range: 620MHz to 780MHz • Parallel or serial interface for programming counter and output dividers • RMS period jitter: 3ps (typical) • RMS phase jitter at 155.52MHz, using a 38.88MHz crystal (12kHz to 20MHz): 2.5ps (typical) Phase noise: 155.52MHz Offset Noise Power 100Hz .................. -84.1 dBc/Hz 1kHz ................ -109.8 dBc/Hz 10kHz ................ -126.3 dBc/Hz 100kHz ................ -128.7 dBc/Hz • 3.3V supply voltage • 0°C to 70°C ambient operating temperature • Lead-Free package RoHS compliant 32 31 30 29 28 27 26 25 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 XTAL_OUT TEST_CLK XTAL_SEL VCCA S_LOAD S_DATA S_CLOCK MR M5 M6 M7 M8 N0 N1 nc VEE 32-Lead LQFP 7mm x 7mm x 1.4mm package body Y Package Top View ICS84321 HiPerClockS™ ICS OSC VCO_SEL XTAL_SEL TEST_CLK XTAL_IN XTAL_OUT S_LOAD S_DATA S_CLOCK nP_LOAD M0:M8 N0:N1 VCO PLL FOUT0 nFOUT0 FOUT1 nFOUT1 TEST CONFIGURATION INTERFACE LOGIC ÷ M 0 1 0 1 PHASE DETECTOR MR ÷ 3 ÷ 4 ÷ 5 ÷ 6 |
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