DSC400 Datasheet, PDF (1/15 Pages) Microchip Technology – Configurable Four Output, Low Jitter Crystal-less™ Clock Generator

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 pre-
configured 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
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DSC400
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