DSC2311 Datasheet, PDF (1/18 Pages) Micrel Semiconductor – Crystal-less™ Configurable Two Output Clock Generator

DSC2311
Crystal-less™ Configurable Two-Output Clock Generator
Features
• Two Simultaneous CMOS Outputs
- Output 1 Range: 2.3 MHz to 170 MHz
- Output 2 Range: 2.3 MHz to 170 MHz
• Low RMS Phase Jitter: <1 ps (typ.)
• High Stability: ±25 ppm, ±50 ppm
• Wide Temperature Range
- Automotive: –40^°C to +125^°C
- Ext. Industrial –40^°C to +105^°C
- Industrial –40^°C to +85^°C
- Ext. Commercial –20^°C to +70^°C
• High Supply Noise Rejection: –50 dBc
• High Shock and Vibration Immunity
- Qualified to MIL-STD-883
• High Reliability
- 20x higher MTBF than crystal-based clock
generator designs
• Supply Range of 2.25V to 3.6V
• Lead Free and RoHS-Compliant
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
General Description
The DSC2311 is a crystal-less™ clock generator that is
factory-configurable to simultaneously output two
separate frequencies from 2.3 MHz 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 that
allows it to disable the outputs when OE is low. The
device is available in a space-saving 6-pin 2.5 mm x
2.0 mm crystal-less VDFN package that uses only a
single external bypass capacitor. This requires a PCB
footprint equivalent to that of a 1.0 mm x 1.0 mm
crystal-based clock generator.
Block Diagram
Control Circuitry
MEMS
PLL
OE
Output
Control
and
Divider
F_OUT1
F_OUT2
 2016 Microchip Technology Inc.
DS20005611A-page 1