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KI1232

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仕様・特性

DSC400 Configurable Four Output, Low Jitter Crystal-less™ Clock Generator General Description The DSC400 is a four output crystal-less™ clock generator. It utilizes Micrel’s proven PureSilicon™ MEMS technology to provide excellent jitter and stability while incorporating additional device functionality. The frequencies of the outputs can be identical or independently derived from common PLLs. Each output may be configured independently to support a single ended LVCMOS interface or a differential interface. Differential options include LVPECL, LVDS, or HCSL. The DSC400 provides two independent select lines for choosing between two sets of preconfigured frequencies per bank. It also has two OE pins to allow for enabling and disabling outputs. The DSC400 is packaged in a 20-pin QFN (5mm x 3.2mm) and is available in extended commercial and industrial temperature grades. Features  Low RMS Phase Jitter: <1 ps (typ)  High Stability: ±25ppm, ±50ppm  Wide Temperature Range o Ext. commercial: -20°C to 70°C o Industrial: -40°C to 85°C  High Supply Noise Rejection: -50 dBc  Four format configurable outputs: o LVPECL, LVDS, HCSL, LVCMOS  Available Pin-Selectable frequency table o 1 pin per bank for 2 frequency sets  Wide Freq. Range: o 2.3 MHz – 460 MHz  20 QFN Footprint (5mm x 3.2mm)  Excellent Shock & Vibration Immunity o Qualified to MIL-STD-883  High Reliability o 20x better MTF than quartz based devices  Wide Supply Range of 2.25 to 3.6 V  Lead Free & RoHS Compliant  AEC-Q100 Automotive Qualified Block Diagram Applications  Communications and Networks  Ethernet o 1G, 10GBASE-T/KR/LR/SR, and FCoE  Storage Area Networks o SATA, SAS, Fibre Channel  Passive Optical Networks o EPON, 10G-EPON, GPON, 10G-PON  HD/SD/SDI Video & Surveillance  Automotive  Media and Video  Embedded and Industrial  _____________________________________________________________________________________________________________________________ _________________ DSC400 Page 1

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