STXO OSCILLATOR
Product Family
10 MHz to 80 MHz
Low Jitter, Tight Frequency Stability,
Low Phase Noise CMOS Clock Oscillator
DESCRIPTION
State-of-the-art design, process, manufacturing and testing
capabilities have made the development of the ultra-miniature
STXO oscillators achievable. Performance capabilities include
low RMS phase jitter (typical < 300 femtoseconds), low phase
noise (noise floor typical < -161 dBc/Hz) and tight frequency
stability (± 5 ppm total). Contact Statek for tighter tolerances.
FEATURES
3.2 mm x 2.5 mm
2.5 mm x 2.0 mm
High shock survival option up to 75,000 g
Tight frequency stability and low phase noise
Ultra-low Allan Deviation and RMS phase jitter
Ultra-low period jitter; 1.4 ps RMS
Low acceleration sensitivity
Low current consumption; 3.0 mA max no load across temp
Full military testing per MIL PRF 55310 available
CMOS output; enable/disable with Tri-State
Fundamental frequency; no PLL artifacts
Hermetically sealed ceramic package
Designed, manufactured and tested in the USA
MAXIMUM
APPLICATIONS
TOP
DIMENSIONS
A
C
E
D
B
BOTTOM
MAXIMUM
2.5 X 2.0 MM
inches
0.102
0.083
0.039
0.048
0.027
0.023
mm
2.60
2.10
1.00
1.22
0.69
0.59
PACKAGE
DIM
A
B
3.2 X 2.5 MM
inches
0.136
0.107
mm
3.40
2.70
1.35
1.47
1.10
0.85
Defense and Aerospace
RF Telemetry
Master Clock
C
(SM1)
0.053
C
(SM3/SM5)
0.058
D
E
0.041
0.031
SUGGESTED LAND PATTERN
3.2 mm x 2.5 mm
2.5 mm x 2.0 mm
0.114 (2.9)
0.094 (2.4)
0.025 (0.64)
0.038
(0.975)
inches (mm)
0.037
(0.95)
10220 Rev E
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Specifications are typical at 25
O
C unless otherwise noted.
Specifications are subject to change without notice. Tighter
specifications are available. Please contact factory.
Frequency
Supply Voltage
10 MHz to 80 MHz
2.5V, 3.0V and 3.3 V ± 10%
Contact Factory for other temperature
ranges
Supply Current (Typical)
3
Output Voltage Levels
Output Load (CMOS)
Start-up Time
Rise/Fall Time
Duty Cycle
Aging, first year
Shock, survival
Vibration, survival
4
Operating Temp. Ranges
15 pF load
40 MHz
V
OH
V
OL
Supply Voltage V
DD
-0.3 V to 4.0 V
Storage Temperature
-55
O
C to 125
O
C
Maximum Process Temperature 260
O
C for 20 seconds
ENABLE/DISABLE OPTIONS (E/N)
Total Frequency Tolerance
1,2
± 5 ppm (Industrial)
3.3 V
3 mA
V
DD
-0.4 V min
Statek offers two enable/disable options: E and N. The
E-version has a Tri-State output and stops oscillating
internally when the output is put into the high Z state.
The N-version does not have PIN 1 connected internally
and so has no enable/disable capability. The following
table describes the Enable/Disable option E.
ENABLE/DISABLE OPTION E
FUNCTION TABLE
0.4 V max
Output
Oscillator
Current
15 pF
5 ms MAX
5 ns MAX
45% MIN/55% MAX
2 ppm
STD: 5,000 g, 0.5 ms,
1
/
2
sine
HG: up to 75,000 g, 0.5 ms,
1/2
sine
20 g, 10-2,000 Hz swept sine
-40 C to 85 C (Industrial)
-55
O
C to 125
O
C (Military)
O
O
Enable (Pin 1 High*) Disable (Pin 1 Low)
Frequency Output
Oscillates
Normal
High Z State
Stops
Very Low
*
When PIN 1 is allowed to float, it is held high by an internal pull-up resistor.
PIN CONNECTIONS
1. Output Enable/Disable (E) or no connection (N)
2. Ground
3. Output
4. V
DD
Typical Period Jitter (RMS) at 40 MHz & 20 MHz is 1.4 ps over
10,000 cycles
Moisture Sensitivity Level (MSL) - This product is hermetically
sealed and not moisture sensitive.
1. Contact factory for tighter total frequency tolerance.
2. -40
O
C to 105
O
C available, contact factory.
3. VDD = 3.3 V, 15 pF load, frequency at 40 MHz.
4. Per MIL-STD-202G, Method 204D, Condition D. Random vibration testing also
available.
Note: All parameters are measured at ambient temperature with a 10 M , 15 pF load.
PACKAGING OPTIONS
STXO
- Tray Pack
- 12 mm tape, 7” or 13” reels
Per EIA 481
HOW TO ORDER STXO SURFACE MOUNT CRYSTAL OSCILLATORS
STXO
A
D
4
Supply Voltage
2 = 2.5 V
3 = 3.0 V
4 = 3.3 V
S
“S” if Special or
custom design;
otherwise blank
N
Enable/Disable
Option
E or N
Terminations
Blank = SM1
= Gold Plated
(Lead Free)
SM3 = Solder Dipped
SM5 = Solder Dipped
(Lead Free)
20.0M
Frequency
M = MHz
,
/
/
5
/
I
A = 3.2 x 2.5 mm
B = 2.5 x 2.0 mm
Blank = STD 5,000 g
D = 30,000 g
F = 50,000 g
G = 75,000 g
Total
Frequency
Tolerance
(in ppm)
Temp. Range:
I
M
= -40
O
C to +85
O
C
= -55
O
C to +125
O
C
S = Customer Specified
10220 Rev E
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
PHASE NOISE AND JITTER PERFORMANCE
Typical Phase Noise (dBc/Hz)
Frequency Offset
Clock Frequency (MHz)
(Hz)
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
1 MHz
5 MHz / 10 MHz
20 MHz
20 MHz
-69
-105
-138
-154
-158
-159
-163
-
40 MHz
-61
-98
-131
-151
-160
-161
-161
-161
Integrated RMS Jitter (12 kHz to 20MHz)
Frequency
20 MHz
40 MHz
VDD = 2.5V
256 femtosec.
232 femtosec.
1
VDD = 3.3V
229 femtosec.
228 femtosec.
1) 20 MHz integration point is Clock Frequency dependent.
Phase noise performance at 20 MHz and 40 MHZ
10220 Rev E
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
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