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PDF DSC1028 Data sheet ( Hoja de datos )
| Número de pieza | DSC1028 | |
| Descripción | Low-Power CMOS Oscillator | |
| Fabricantes | Micrel Semiconductor | |
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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 in” replacement 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
1 page  
DSC1028
2.8V
Low-Power CMOS Oscillator
Board Layout (recommended)
Solder Reflow Profile
260°C
217°C
200°C
150°C
25°C
60-180
Sec
Pre heat
8 min max
20-40
Sec
60-150
Sec
Reflow
Cool
Time
MSL 1 @ 260°C refer to JSTD-020C
Ramp-Up Rate (200°C to Peak Temp) 3°C/Sec Max.
Preheat Time 150°C to 200°C
60-180 Sec
Time maintained above 217°C
60-150 Sec
Peak Temperature
255-260°C
Time within 5°C of actual Peak
20-40 Sec
Ramp-Down Rate
6°C/Sec Max.
Time 25°C to Peak Temperature
8 min Max.
Package Dimensions
7.0 x 5.0 mm Plastic Package
External Dimensions
7.0±0.10 [0.276±0.004]
#4 #3
#3
2.6 [0.102]
5.08 [0.2]
#4
3.5 [0.138]
2.2 [0.087]
Recommended Land Pattern*
5.08 [0.200]
2.6 [0.102]
0.2 [0.008]
oo
oo
oo
1.4 [0.055]
#1 #2
5.0±0.10 [0.197±0.004]
0.85±0.05 [0.033±0.002]
#2 1.4 [0.055] #1
0.2 [0.008]
1.2 [0.047]
No. Pin Terminal
1 Standby#
2 GND
3 Output
4 VDD
0.2 [0.008]
1.4 [0.055]
*Note: The center pad is not connected
internally and should be left un-
connected or tied to GND.
units: mm [inch]
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 5
MK-Q-B-P-D-031809-03-7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet DSC1028.PDF ] | |
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