DSC2142 DSC2242
Low-Jitter I2C/SPI Programmable HCSL-LVPECL Oscillator
General Description
Features
The DSC2142 and DSC2242 series of high
performance dual output oscillators utilize a
proven silicon MEMS technology to provide
Low RMS Phase Jitter: <1 ps (typ)
High Stability: ±50 ppm
excellent
jitter
and
stability
while
Wide Temperature Range
o Industrial: -40° to 85° C
o Ext. commercial: -20° to 70° C
incorporating additional device functionality.
DSC2142 and DSC2242 allow the user to
independently modify the frequency of each
output
using
I2C
or
SPI
interface,
High Supply Noise Rejection: -50 dBc
Independent HCSL & LVPECL Outputs
I2C/SPI Programmable Frequencies
Short Lead Times: 2 Weeks
respectively. User can also select from two
pre-programmed default output frequencies
using the control pin.
DSC2142 and DSC2242 are packaged in 14-
pin 3.2x2.5 mm QFN packages and available
in temperature grades from Ext. Commercial
to Industrial.
Wide Frequency Range:
o HCSL Output: 2.3 to 460 MHz
o LVPECL output: 2.3 to 460 MHz
Miniature Footprint of 3.2x2.5mm
Excellent Shock & Vibration Immunity
o Qualified to MIL-STD-883
Block Diagram
High Reliability
o 20x better MTF than quartz oscillators
Supply Range of 2.25 to 3.6 V
Lead Free & RoHS Compliant
Applications
Storage Area Networks
o SATA, SAS, Fibre Channel
Passive Optical Networks
o EPON, 10G-EPON, GPON, 10G-PON
Ethernet
o 1G, 10GBASE-T/KR/LR/SR, and FCoE
HD/SD/SDI Video & Surveillance
PCI Express
Pin # DSC2142 (I2C)
DSC2242 (SPI)
3
5
6
7
NC
SDA
SCL
SCLK
MOSI
MISO
SS
CS_bar
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DSC2142 DSC2242 Page 1 MK-Q-B-P-D-12050112