DSC400
Configurable Four Output, Low Jitter Crystal-less™ Clock Generator
Features
General Description
• Low RMS Phase Jitter: <1 ps (typ.)
• High Stability: ±25 ppm, ±50 ppm
• Wide Temperature Range:
The DSC400 is a four output crystal-less™ clock
generator. It utilizes proven PureSilicon™ MEMS
technology to provide excellent jitter and stability while
incorporating additional device functionality.
- Industrial –40°C to +85°C
The nominal frequencies of the outputs can be identical
or independently derived from common PLLs.
- Ext. Commercial –20°C to +70°C
• High Supply Noise Rejection: –50 dBc
• Four Format-Configurable Outputs:
- LVPECL, LVDS, HCSL, LVCMOS
• Available Pin-Selectable Frequency Table
- 1 Pin per Bank for 2 Frequency Sets
• Wide Frequency Range:
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.
- 2.3 MHz – 460 MHz
• 20-Pin QFN Footprint (5.0 mm x 3.2 mm)
• Excellent Shock and Vibration Immunity
• High Reliability
The DSC400 is packaged in a 20-pin QFN (5 mm x
3.2 mm) and is available in extended commercial and
industrial temperature grades.
- 20x better MTF than quartz-based devices
• Wide Supply Range of 2.25V to 3.6V
• Lead Free and RoHS-Compliant
• AEC-Q100 Automotive Qualified
Block Diagram
CONTROL
CIRCUITRY
CLK0+
CLK0-
Applications
BANK 1
• Communications and Networks
CLK3+
CLK3-
PLL
MEMS
• Ethernet
OUTPUT
CONTROL
AND
- 1G, 10GBASE-T/KR/LR/SR, and FCoE
• Storage Area Networks
- SATA, SAS, Fibre Channel
• Passive Optical Networks
- EPON, 10G-EPON, GPON, 10G-PON
• HD/SD/SDI Video and Surveillance
• Automotive
PLL
DIVIDERS
OE1
OE2
CLK1+
CLK1-
BANK 2
FSB1
FSB2
CLK2+
CLK2-
• Media and Video
• Embedded and Industrial
2016 Microchip Technology Inc.
DS20005612A-page 1