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DSC1018 Page 1 MK-Q-B-P-D-031809-05-8
DSC1018
1.8V
Low-Power CMOS Oscillator
General Description
The DSC1018 is a 1.8V fixed frequency
MEMS based PureSilicon™ Oscillator. It can
be factory programmed to any frequency
from 1 to 150MHz.
The DSC1018 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 DSC1018 ideal for
rugged, industrial, and portable
applications where stress, shock, and
vibration can damage quartz crystal based
systems.
Available in industry standard packages,
the DSC1018 can be “dropped-in” to the
same PCB footprint as standard crystal
oscillators.
Block Diagram
Standby#
PFD VCO
Frac-N
PLL
Resonator
OutputVDD
GND
(pin1)
Standby#
PFD VCO
Frac-N
PFD VCO
Frac-N
PLL
Resonator
OutputVDD
GND
(pin1)
Features
Frequency Range: 1 to 150MHz
Exceptional Stability over Temperature
o ±25 PPM, ±50 PPM
Operating voltage
o 1.65 to 1.95V
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
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DSC1018 Page 2 MK-Q-B-P-D-031809-05-8
DSC1018
1.8V
Low-Power CMOS Oscillator
Absolute Maximum Ratings1
Min.
Max
Unit
Condition
-0.3
VDD+0.3
V
-
+150
°C
-55
+150
°C
-
+260
°C
40 sec max.
-
2000
200
500
V
Ordering Code
Recommended Operating Conditions
Specifications
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.
Parameter
Symbol
Range
Supply Voltage
VDD
1.65 – 1.95V
Output Load
ZL
R>10KΩ, C≤15pF
Operating Temperature
Option 1
Option 2
Option 3
T
-40 − +85 °C
-20 − +70 °C
0 − +70 °C
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Frequency
f0
Single Frequency
1
150
MHz
Frequency Tolerance
Option 1
Option 2
Option 3
Δf
-40°C to +85°C
-20°C to +70°C
0°C to +70°C
±25,±50
±25,±50
±25,±50
ppm
Supply Current, no load
IDD
CL=0p
RL=∞
T=25°
C
1 to 40MHz
40 to 80MHz
80 to 125MHz
125 to 150MHz
3
4
5
6
10
mA
Supply Current, standby
IDD
T=25°C
1.0
uA
Output Logic Levels
Output logic high
Output logic low
VOH
VOL
CL=15pF
0.8*VDD
-
-
0.2*VDD
Volts
Output Transition time
Rise Time
Fall Time
tR
tF
CL=15pF; T=25°C
20%/80%*VDD
1.3
1.3
2
2
ns
Output Startup Time2
tSU
T=25°C
1.5
3
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
DSC1018
032.0000
Family
Output Freq
1.0 to 150MHz
CE1
Package, Temp
& Stability
-
T
Tape/
Reel
* See Ordering Information for details
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DSC1018 Page 3 MK-Q-B-P-D-031809-05-8
DSC1018
1.8V
Low-Power CMOS Oscillator
Nominal Performance Characteristics
1.8V Characteristics
Supply Current
0
4
8
12
16
050 100 150
Frequency (MHz)
Supply Current (mA)
1pF 8pF 15pF
Ta = 25°C
Standby Current
0
0.2
0.4
0.6
0.8
1
050 100 150
Frequency (MHz)
Standby Current (µA)
-40°C 25°C 85°C
Rise Time
0
0.5
1
1.5
2
050 100 150
Frequency (MHz)
Rise Time (ns)
-40°C 25°C 85°C
Fall Time
0
0.5
1
1.5
2
050 100 150
Frequency (MHz)
Fall Time (ns)
-40°C 25°C 85°C
Period Jitter
0
10
20
30
40
050 100 150
Frequency (MHz)
RMS Jitter (ps)
25°C
Cycle to Cycle Jitter
0
50
100
150
200
050 100 150
Frequency (MHz)
Jitter (ps)
25°C
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DSC1018 Page 4 MK-Q-B-P-D-031809-05-8
DSC1018
1.8V
Low-Power CMOS Oscillator
Output Waveform
Standby Function
Standby#
(pin 1)
Output
(pin 3)
Hi Level
Output ON
Open
(no connect)
Output ON
Low Level
High Impedance
Test Circuit
0.01uF
VDD
15pF
IDD
*VSD
4
1
2
3
*VSD = Standby# Logic Level Input
VOH
VOL
VIL
1/fo
Output
Standby#
tDA
tEN
tF
tR
VIH
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DSC1018 Page 5 MK-Q-B-P-D-031809-05-8
DSC1018
1.8V
Low-Power CMOS Oscillator
Board Layout (recommended)
Solder Reflow Profile
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.
60-150
Sec
20-40
Sec
60-180
Sec
8 min max
Pre heat
Reflow
Cool
Time
Temperature (°C)
3C/Sec Max.
6C/Sec Max.
200°C
217°C
150°C
25°C
260°C
3C/Sec Max.
60-150
Sec
20-40
Sec
60-180
Sec
8 min max
Pre heat
Reflow
Cool
Time
Temperature (°C)
3C/Sec Max.
6C/Sec Max.
200°C
217°C
150°C
25°C
260°C
60-150
Sec
20-40
Sec
60-180
Sec
8 min max
Pre heat
Reflow
Cool
Time
Temperature (°C)
3C/Sec Max.
6C/Sec Max.
200°C
217°C
150°C
25°C
260°C
3C/Sec Max.
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DSC1018 Page 6 MK-Q-B-P-D-031809-05-8
DSC1018
1.8V
Low-Power CMOS Oscillator
Package Dimensions
7.0 x 5.0 mm Plastic Package
5.0 x 3.2 mm Plastic Package
Pin Terminal
VDD
Standby#
Output
GND
#1
#2
#3
#4
5±0.10 [0.197±0.004]
3.2±0.10 [0.126±0.004]
External Dimensions
#4
#3
2.54 [0.100]
#2
#1
0.9 [0.035]
1.2 [0.047]
0.85±0.05 [0.033±0.002]
Recommended Land Pattern
1.1 [0.043]
1.2 [0.047]
2.54 [0.100]
units: mm [inch]
No.
4
1
3
2
0.2 [0.008]
0.1 [0.004]
2.1 [0.083]
1.2 [0.047]
0.1 [0.004]
Pin Terminal
VDD
Standby#
Output
GND
#1
#2
#3
#4
7.0±0.10 [0.276±0.004]
5.0±0.10 [0.197±0.004]
External Dimensions
#4
#3
5.08 [0.2]
#2
#1
1.2 [0.047]
1.4 [0.055]
0.85±0.05 [0.033±0.002]
Recommended Land Pattern*
1.4 [0.055]
1.4 [0.055]
5.08 [0.200]
units: mm [inch]
No.
4
1
3
2
0.2 [0.008]
2.6 [0.102]
2.6 [0.102]
0.2 [0.008]
2.2 [0.087]
3.5 [0.138]
o o
o o
o o
0.2 [0.008]
*Note: The center pad is not connected
internally and should be left un-
connected or tied to GND.
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DSC1018 Page 7 MK-Q-B-P-D-031809-05-8
DSC1018
1.8V
Low-Power CMOS Oscillator
3.2 x 2.5 mm Plastic Package
2.5 x 2.0 mm Plastic Package
Pin Terminal
VDD
Standby#
Output
GND
0.85±0.05 [0.033±0.002]
Recommended Land Pattern
#1
#2
#3
#4
2.5±0.05 [0.098±0.002]
2.0±0.05 [0.079±0.002]
#4
#3
#2
#1
0.65±0.10 [0.026±0.004]
0.65±0.05 [0.026±0.002]
CO.25
0.85 [0.033]
0.65 [0.026]
0.7 [0.028]
1.65 [0.065]
No
.
4
1
3
2
0.7 [0.028]
1.65 [0.065]
External Dimensions
units: mm [inch]
0.2 [0.008]
Pin Terminal
VDD
Standby#
Output
GND
0.85±0.05 [0.033±0.002]
Recommended Land Pattern
#1
#2
#3
#4
3.2±0.05 [0.126±0.002]
2.5±0.05 [0.098±0.002]
#4
#3
#2
#1
0.8±0.1 [0.031±0.004]
0.9±0.05 [0.035±0.002]
CO.25
1.0 [0.039]
0.9 [0.035]
2.1 [0.083]
No
.
4
1
3
2
2.1 [0.083]
External Dimensions
units: mm [inch]
0.9 [.035]
0.9 [0.035]
0.2 [0.008]
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DSC1018 Page 8 MK-Q-B-P-D-031809-05-8
DSC1018
1.8V
Low-Power CMOS Oscillator
Ordering Information
DSC1018 PTS – xxx.xxxx T
PART NUMBERING GUIDE
Package
(Plastic QFN)
Temperature
Stability
Frequency
Packing Option
P=A: 7.0x5.0mm
P=B: 5.0x3.2mm
P=C: 3.2x2.5mm
P=D: 2.5x2.0mm
T=C: 0o ~ +70o C
T=E: -20o ~ +70o C
T=I: -40o ~ +85o C
S=1: ±50ppm
S=2: ±25ppm
XXX.XXXX
Blank: Tubes
- T: Tape & Reel
Example: DSC1018CE1–123.0000T
The example part number above is a 123.0000MHz oscillator in Plastic 3.2x2.5mm package, with
±50ppm stability over an operating temperature of -20 to +70oC, shipped in Tape and Reel. The
reel size (7” or 13” diameter) will be determined by the factory based on quantity.
Disclaimer:
Discera makes no warranty of any kind, express or implied, with regard to this material,
including, but not limited to, the implied warranties of merchantability and fitness for a
particular purpose. Discera reserves the right to make changes without further notice to
materials described herein. Discera does not assume any liability arising from the
application or use of any product or circuit described herein. Discera does not authorize
its products for use a critical components in life-support systems where a malfunction or
failure may reasonably be expected to result in significant injury to the user. The
inclusion of Discera’s product in a life-support systems application implies that the
manufacturer assumes all risk of such use and in doing so indemnifies Discera against all
charges.
DISCERA, Inc. ● 1961 Concourse Drive, San Jose, California 95131 ● USA
Phone: +1 (408) 432-8600 ● Fax: +1 (408) 432-8609 ● Email: sales@discera.com ● www.discera.com
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Micrel:
DSC1018DE2-040.0000T DSC1018CI1-038.4000T DSC1018CI2-022.5792T DSC1018BE1-024.0000T
DSC1018DI1-025.0000T DSC1018CI1-026.0000T DSC1018DI1-028.6360T DSC1018DI2-026.0000T DSC1018DI2-
027.0000T DSC1018DI2-070.0000T DSC1018DE1-004.7500T DSC1018DI1-025.0000 DSC1018CE2-040.0000T
DSC1018CE1-026.0000T DSC1018BI1-125.0000T DSC1018CI2-022.5792 DSC1018DI1-028.6363T DSC1018DI1-
050.0000T DSC1018BE1-028.6363T DSC1018CI1-100.0000T DSC1018DC1-022.0000T DSC1018DI1-024.0000T
DSC1018BC1-054.0000T DSC1018DC2-026.0000T DSC1018DE1-027.0000T1