DSC2140 DSC2240
Low-Jitter I2C/SPI Programmable HCSL Oscillator
General Description
Features
The DSC2140 and DSC2240 series of
Low RMS Phase Jitter: <1 ps (typ)
High Stability: ±10, ±25, ±50 ppm
programmable,
high-performance
HCSL
oscillators utilizes a proven silicon MEMS
technology to provide excellent jitter and
stability while incorporating high output
frequency flexibility. DSC2140 and DSC2240
allow the user to modify the output
frequency using I2C or SPI interface,
respectively. User can also select from two
pre-programmed default output frequencies
using the control pin.
Wide Temperature Range
o Industrial: -40° to 85° C
o Ext. commercial: -20° to 70° C
High Supply Noise Rejection: -50 dBc
I2C/SPI Programmable Output Freq
Short Lead Times: 2 Weeks
Wide Freq. Range:
o HCSL Output: 2.3 to 460 MHz
DSC2140 and DSC2240 are packaged in 14-
pin 3.2x2.5 mm QFN packages and available
in temperature grades from Ext. Commercial
to Industrial.
Miniature Footprint of 3.2x2.5mm
Excellent Shock & Vibration Immunity
o Qualified to MIL-STD-883
High Reliability
o 20x better MTF than quartz oscillators
Block Diagram
Supply Range of 2.25 to 3.6 V
Lead Free & RoHS Compliant
Applications
Consumer Electronics
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 # DSC2140 (I2C)
DSC2240 (SPI)
3
5
6
7
NC
SDA
SCL
SCLK
MOSI
MISO
SS
CS_bar
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DSC2140 DSC2240 Page 1 MK-Q-B-P-D-12050110