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DSC1028 Datasheet Preview

DSC1028 Datasheet

Low-Power CMOS Oscillator

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DSC1028
2.8V Low-Power CMOS Oscillator
General Description
The DSC1028 is a 2.8V fixed frequency MEMS
based PureSilicon™ Oscillator. It can be factory
programmed to any frequency from 1 to
150MHz.
The DSC1028 incorporates an all silicon
resonator that is extremely robust and nearly
immune to stress related fractures, common to
crystal based oscillators. Without sacrificing the
performance and stability required of today’s
systems, a crystal-less design allows for a
higher level of reliability, making the DSC1028
ideal for rugged, industrial, and portable
applications where stress, shock, and vibration
can damage quartz crystal based systems.
Available in industry standard packages, the
DSC1028 can be “dropped-in” to the same PCB
footprint as standard crystal oscillators.
Block Diagram
VDD
Output
Resonator
PFD
VCO
Frac-N
PLL
Standby#
(pin1)
GND
Features
Frequency Range: 1 to 150MHz
Exceptional Stability over Temperature
o ±25 PPM, ±50 PPM
Operating voltage
o 2.6 to 3.0V
Operating Temperature Range
o Industrial -40ºC to 85ºC
o Ext. Commercial -20ºC to 70ºC
o Commercial 0ºC to 70ºC
Low Operating and Standby Current
o 3mA Operating (40MHz)
o 1uA Standby
Ultra Miniature Footprint
o 2.5 x 2.0 x 0.85 mm
o 3.2 x 2.5 x 0.85 mm
o 5.0 x 3.2 x 0.85 mm
o 7.0 x 5.0 x 0.85 mm
Excellent Shock and Vibration
Resistance
Lead Free, RoHS & Reach SVHC
Compliant
Benefits
Pin for pin “drop inreplacement for
industry standard oscillators
Semiconductor level reliability,
significantly higher than quartz
Short mass production lead-times
Longer Battery Life / Reduced Power
Compact Plastic package
Cost Effective
Applications
Mobile Applications
Consumer Electronics
Portable Electronics
CCD Clock for VTR Cameras
Low Profile Applications
Industrial
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes
to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to
implied warranties of merchantability or fitness for a particular use.
Page 1
MK-Q-B-P-D-031809-03-7




Micrel Semiconductor

DSC1028 Datasheet Preview

DSC1028 Datasheet

Low-Power CMOS Oscillator

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DSC1028
2.8V
Low-Power CMOS Oscillator
Absolute Maximum Ratings1
Item
Min.
Max
Unit
Input Voltage
-0.3 VDD+0.3 V
Junction Temp
-
+150
°C
Storage Temp
-55 +150
°C
Soldering Temp
-
+260
°C
ESD
-
V
HBM
2000
MM 200
CDM
500
Condition
40 sec max.
DSC1028
CE1 - 032.0000 T
Family
Package, Temp
& Stability
Output Freq
1.0 to 150MHz
Tape/
Reel
* See Ordering Information for details
Ordering Code
Recommended Operating Conditions
Parameter
Symbol
Range
Supply Voltage
VDD
2.6 to 3.0V
Output Load
Operating Temperature
Option 1
Option 2
Option 3
ZL
T
R>10KΩ, C≤15pF
-40 − +85 °C
-20 − +70 °C
0 − +70 °C
Specifications
Parameter
Frequency
Frequency Tolerance
Option 1
Option 2
Option 3
Supply Current, no load
Supply Current, standby
Output Logic Levels
Output logic high
Output logic low
Output Transition time
Rise Time
Fall Time
Output Startup Time2
Symbol
f0
Condition
Single Frequency
-40°C to +85°C
Δf
-20°C to +70°C
0°C to +70°C
CL=0p
1 to 40MHz
IDD
RL=∞
T=25°
40 to 80MHz
80 to 125MHz
C 125 to 150MHz
IDD T=25°C
VOH
VOL
CL=15pF
tR CL=15pF; T=25°C
tF 20%/80%*VDD
tSU T=25°C
Min.
1
Typ.
3
4
5
6
0.8*VDD
-
1.3
1.3
1.5
Max.
150
±25,±50
±25,±50
±25,±50
10
1.0
-
0.2*VDD
2
2
3
Unit
MHz
ppm
mA
uA
Volts
ns
ms
Output Disable Time
tDA
20 100
ns
Output Duty Cycle
SYM
45 55 %
Input Logic Levels
Input logic high
Input logic low
VIH
VIL
0.75*VDD
-
-
0.25* VDD
Volts
Jitter, Cycle to Cycle
JCC
F = 100MHz3
95 ps
Notes:
1. Absolute maximum ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be
operated beyond these limits.
2. tSU is time to stable output frequency after VDD is applied. tSU and tEN (after EN is asserted) are identical values.
3. See typical cycle to cycle jitter graph for frequency dependence.
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes
to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to
implied warranties of merchantability or fitness for a particular use.
Page 2
MK-Q-B-P-D-031809-03-7


Part Number DSC1028
Description Low-Power CMOS Oscillator
Maker Micrel Semiconductor
Total Page 7 Pages
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