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.
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
Block Diagram
V
DD
Output
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
Resonator
PFD
VCO
Frac-N
PLL
Mobile Applications
Consumer Electronics
Portable Electronics
CCD Clock for VTR Cameras
Low Profile Applications
Industrial
Standby#
(pin1)
GND
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DSC1028
Page 1
MK-Q-B-P-D-031809-03-8
DSC1028
2.8V
Low-Power CMOS Oscillator
Absolute Maximum Ratings
1
Item
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
ESD
HBM
MM
CDM
Min.
-0.3
-
-55
-
-
2000
200
500
Max
VDD+0.3
+150
+150
+260
Unit
V
°C
°C
°C
V
40 sec max.
Condition
Ordering Code
DSC1028
Family
Package, Temp
& Stability
Output Freq
1.0 to 150MHz
Tape/
Reel
CE1
-
032.0000
T
* See Ordering Information for details
Recommended Operating Conditions
Parameter
Supply Voltage
Output Load
Operating Temperature
Option 1
Option 2
Option 3
Symbol
V
DD
Z
L
T
Range
2.6 to 3.0V
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 Time
2
Output Disable Time
Output Duty Cycle
Input Logic Levels
Input logic high
Input logic low
Jitter, Cycle to Cycle
Symbol
f
0
Condition
Single Frequency
-40°C to +85°C
-20°C to +70°C
0°C to +70°C
C
L
=0p
1 to 40MHz
R
L
=∞
40 to 80MHz
T=25°
80 to 125MHz
C
125 to 150MHz
T=25°C
C
L
=15pF
C
L
=15pF; T=25°C
20%/80%*V
DD
T=25°C
0.8*V
DD
-
1.3
1.3
1.5
20
45
0.75*V
DD
-
F = 100MHz
3
95
Min.
1
Typ.
Max.
150
±25,±50
±25,±50
±25,±50
3
4
5
6
Unit
MHz
ppm
Δf
I
DD
I
DD
V
OH
V
OL
t
R
t
F
t
SU
t
DA
SYM
V
IH
V
IL
J
CC
10
1.0
-
0.2*V
DD
2
2
3
100
55
-
0.25* V
DD
mA
uA
Volts
ns
ms
ns
%
Volts
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.
t
SU
is time to stable output frequency after V
DD
is applied. t
SU
and t
EN
(after EN is asserted) are identical values.
3.
See typical cycle to cycle jitter graph for frequency dependence.
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DSC1028
Page 2
MK-Q-B-P-D-031809-03-8
DSC1028
2.8V
Low-Power CMOS Oscillator
Board Layout (recommended)
Solder Reflow Profile
cM
ax
260
°
C
Temperature (°C)
.
20-40
Sec
217
°
C
200
°
C
.
ax
60-150
Sec
150
°
C
Se
cM
60-180
Sec
Reflow
Pre heat
8 min max
Cool
Time
25
°
C
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
255-260°C
Peak Temperature
Time within 5°C of actual Peak
20-40 Sec
6°C/Sec Max.
Ramp-Down Rate
Time 25°C to Peak Temperature
8 min Max.
3C
/
Se
S
S
S
6C
6C
6C/
c
c
ec
Ma
Ma
Ma
.
.
x.
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DSC1028
Page 5
MK-Q-B-P-D-031809-03-8
3C
/
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