DSC2311 Datasheet, PDF (1/5 Pages) Micrel Semiconductor – Crystal-less™ Configurable Two Output Clock Generator

DSC2311
Crystal-less™ Configurable Two Output Clock Generator
General Description
The DSC2311 is a crystal-less clock
generator that is factory configurable to
simultaneously output two separate
frequencies from 2.3 to 170 MHz. The clock
generator uses proven silicon MEMS
technology to provide low jitter and high
frequency stability across a wide range of
supply voltages and temperatures. By
eliminating the external quartz crystal,
crystal-less clock generators significantly
enhance reliability and accelerate product
development, while meeting stringent clock
performance criteria for a variety of
consumer electronics, communications, and
storage applications.
DSC2311 has an Output Enable / Disable
feature allowing it to disable the outputs
when OE is low. The device is available in a
space saving 6 pin 2.5 x 2.0 mm crystal-
less TDFN package that uses only a single
external bypass capacitor. This requires a
PCB footprint equivalent to that of a 1.0 x
1.0 mm crystal-based clock generator.
Features
 Two Simultaneous CMOS Outputs:
o Output 1 Range: 2.3 to 170 MHz
o Output 2 Range: 2.3 to 170 MHz
 Low RMS Phase Jitter: <1 ps (typ)
 High Stability: ±25, ±50 ppm
 Wide Temperature Range
o Automotive: -55° to 125° C
o Ext. Industrial: -40° to 105° C
o Industrial: -40° to 85° C
o Ext. commercial: -20° to 70° C
 High Supply Noise Rejection: -50 dBc
 High Shock & Vibration Immunity
o Qualified to MIL-STD-883
 High Reliability
o 20x higher MTBF than crystal-based
clock generator designs
 Supply Range of 2.25 to 3.6 V
 Short Lead Times: 2 Weeks
 Lead Free & RoHS Compliant
Block Diagram
Control Circuitry
MEMS
PLL
OE
Output
Control
and
Divider
Applications
 Consumer Electronics
 Camera and Imaging Modules
 Home Automation
 Industrial and Power Conversion
Fout1 ^{ Mobile Communications, Internet,}
and Sensor Devices
 Solid State, Hard Drive, and
Fout2
Flash Drive Storage
_____________________________________________________________________________________________________________________________ _________________
DSC2311
Page 1
MK-QB-P-D-130103-04