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
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DSC400
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