DSC2311KL2-R0018

Crystal-less™ Configurable Clock Generator

General Description

DSC2311KL2-R0018 is a crystal-less clock generator

that is factory configurable to simultaneously output

two separate frequencies from 2.3 to 170MHz. 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.

DSC2311KL2-R0018 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

2.5mm x 2.0mm TDFN package that needs only a

single external bypass capacitor. This requires a PCB

footprint equivalent to that of a 1.0mm x 1.0mm

crystal-based clock generator.

Features

• Two simultaneous LVCMOS outputs:

- 27MHz

- 54MHz

• Low RMS phase jitter: <1ps (typical)

• ±25ppm frequency stability

• -40°C to +105°C ext. industrial temperature range

• High supply noise rejection: -50dBc

• High shock & vibration immunity

- Qualified to MIL-STD-883

• High reliability

- 20x higher MTBF than crystal-based clock

generator designs

• Programmable output strength for EMI reduction

and signal integrity optimization

• Supply range of 2.25 to 3.6V

• AEC-Q100 automotive qualified

• 6-pin 2.5mm x 2.0mm TDFN package

Applications

• Consumer Electronics

• Camera and Imaging Modules

• Home Automation

• Industrial and Power Conversion

• Mobile Communications, Internet, and Sensor Devices

• Solid State, Hard Drive, and Flash Drive Storage

• Automotive

Block Diagram

Control Circuitry

MEMS

PLL

÷ M1

CLK0

÷ M2

CLK1

27MHz LVCMOS

54MHz LVCMOS

OE

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

September 22, 2014

Revision 1.0

tcghelp@micrel.com or (408) 955-1690

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