ICS840051I Datasheet | Renesas

DESCRIPTION The 840051I is a Gigabit Ethernet Clock Generator and a member of the Hi Per Clocks TM family of high performance devices from ICS. The 840051I can synthesize 10 Gigabit Ethernet, SONET, or Serial ATA reference clock fre-quencies with the appropriate choice of crystal and output divider. The 840051I has excellent phase jitter performance and is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space. FREQUENCY TABLE FEATURES - 1 LVCMOS/LVTTL output, 15Ω output impedance - Crystal oscillator interface designed for 18p F parallel resonant crystals - Output frequency range: 70MHz - 170MHz - VCO range: 560MHz - 680MHz - RMS phase jitter at 155.52MHz (1.875MHz - 20MHz): 0.48ps (typical) - RMS phase noise at 155.52MHz Offset Noise Power 100Hz -99.7 d Bc/Hz 1KHz -120 d Bc/Hz 10KHz -128 d Bc/Hz 100KHz -127 d Bc/Hz - 3.3V or 2.5V operating supply - -40°C to 85°C ambient operating temperature - Lead-Free fully Ro HS pliant - Not Remended For New Designs - For drop in replacement part use 840N051i Inputs Crystal Frequency (MHz) 20.141601 20.141601 19.53125 19.53125 19.44 19.44 18.75 18.75 FREQ_SEL 0 1 0 1 0 1 0 1 Output Frequency (MHz) 161.132812 80.566406 156.25 78.125 155.52 77.76 150 75 BLOCK DIAGRAM PIN ASSIGNMENT VDDA 1 OE 2 XTAL_OUT 3 XTAL_IN 4 8 VDD 7 Q0 6 GND 5 FREQ_SEL 840051I 8-Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body G Package Top View 840051AGI REV. A 5/20/16 1 FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR PRODUCT DISCONTINUATION...