DSC8004 Series
1.8~3.3V
Programmable Low-Power Precision CMOS Oscillator
General Description
The DSC8004 is a programmable silicon MEMS
based CMOS oscillator offering excellent jitter
and stability performance over a wide range of
supply voltages and temperatures. The device
operates from 1 to 150MHz in increments of
100Hz (up to four decimal point resolution) with
supply voltages between 1.8 to 3.3 Volts and
extended temperatures from -40ºC to 105ºC.
The DSC8004 has the same functionality and
performance as the DSC8001 but with greater
output drive (C
L
=40pf).
The DSC8004 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 DSC8004
ideal for rugged, industrial, and portable
applications where stress, shock, and vibration
can damage quartz crystal based systems.
Available in industry standard packages, the
DSC8004 can be “dropped-in” to the same PCB
footprint as standard crystal oscillators.
Features
Frequency Range: Programmable from
1 to 150MHz
Exceptional Stability over Temperature
o
±20 PPM , ±25 PPM, ±50 PPM
Operating voltage
o
1.71 to 3.60V
Operating Temperature Range
o
Ext. Industrial -40ºC to 105ºC
o
Industrial -40ºC to 85ºC
o
Ext. Commercial -20ºC to 70ºC
Low Operating and Standby Current
o
8mA Operating (40MHz)
o
15uA 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
Frequency Resolution to 4 decimals
Longer Battery Life / Reduced Power
Compact Plastic package
Cost Effective
Block Diagram
V
DD
Output
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
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-090110-02-1
DSC8004 Series
1.8~3.3V
Programmable Low-Power Precision CMOS Oscillator
Absolute Maximum Ratings
1
Item
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
ESD
HBM
MM
CDM
Min.
-0.3
-0.3
-
-55
-
-
4000
200
1500
Max
+4.0
VDD+0.3
+150
+150
+260
Unit
V
V
°C
°C
°C
V
40 sec max.
Condition
Ordering Code
DSC8004
Family
Package, Temp
& Stability
Tape/
Reel
CE1
-
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
Range
1.71 – 3.60V
R>10KΩ, C≤40pF
-40 to +105 °C
-40 to +85 °C
-20 to +70 °C
T
Specifications
(VDD
= 1.8 to 3.3v) T
A
=85
0
C unless otherwise specified
Parameter
Frequency
Frequency Tolerance
Aging
Supply Current, standby
Output Startup Time
2
Output Disable Time
Output Duty Cycle
Input Logic Levels
Input logic high
Input logic low
Symbol
f
0
Δf
Δf
I
DD
t
SU
t
DA
SYM
V
IH
V
IL
45
0.75*V
DD
-
Condition
Single Frequency
Includes frequency
variations due to initial
tolerance, temperature
and power supply voltage
1 year @25°C
T=25°C
T=25°C
1.0
20
Min
1
Typ
Max
150
±10,±25,±50
±5
15
1.3
100
55
-
0.25* V
DD
Unit
MHz
ppm
ppm
uA
ms
ns
%
Volts
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.
Measured over 50k clock cycles.
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-090110-02-1
DSC8004 Series
1.8~3.3V
Programmable Low-Power Precision CMOS Oscillator
Board Layout (recommended)
Solder Reflow Profile
ax
260
°
C
Temperature (°C)
cM
.
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.
Package Dimensions
7.0 x 5.0 mm Plastic Package
3C
/
External Dimensions
7.0±0.10 [0.276±0.004]
#4
#3
2.6 [0.102]
3.5 [0.138]
Recommended Land Pattern*
5.08 [0.200]
#4
2.6 [0.102]
o
0.2 [0.008]
2.2 [0.087]
5.08 [0.2]
#3
o
o
o
1.4 [0.055]
o
o
#1
#2
5.0±0.10 [0.197±0.004]
#2
1.4 [0.055]
0.2 [0.008]
#1
1.2 [0.047]
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.
0.85±0.05 [0.033±0.002]
No.
1
2
3
4
Pin Terminal
Standby#
GND
Output
VDD
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-090110-02-1
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