I
2
C Interface Oven Controlled Crystal Oscillator
Preleminary version
MD-203
MD-203
The MD-203 is a Vectron module that contains a medium size ovenized crystal oscillator and an I
2
C interface that communicates
with an onboard EEPROM and temperature sensors. The interface enables the customer to improve upon the already
exceptional stability of the oscillator. Provided in a fully hermetic 25 x 25 mm package mounted on a SMD spreader board. The device is
capable of aging rates of 0,5 ppb/day and temperature stabilities of 8ppb from -40 to 85 °C. Use of the information provided in the I
2
C
interface provides a cost effective means of improving stability by as much as a factor of 10 depending upon environmental conditions.
Features
•
•
•
•
•
•
Surface Mount package
Low Profile Compact Package
Standard frequency: 10, 20 MHz
Temperature stability to 8 ppb
Aging rate to 0.5 ppb/day
I
2
C interface with frequency coefficients, temperature
sensor for additional correction
•
•
•
•
Applications
Base stations
Test equipment
Synthesizers
LTE Basestation
Performance Specifications
Frequency Stabilities
1
( 10 & 20 MHz)
Parameter
vs. operating temperature
range (referenced to +25°C,
uncompensated)
Residual error compare to fit
curve
Min
-8
-8
-0.3
Typical
Max
+8
+8
0.3
Units
ppb
ppb
ppb
Condition
-20 to +70°C
-40 to +85°C
Improved Frequency versus temperature F(T) performance obtained using on board temperature sensor (T) and frequency vs.
temperature coefficients (An)stored in EEPROM, using formula:
F(T)=A
4
T
4
+A
3
T
3
+A
2
T
2
+A
1
T+A
0
Initial tolerance
vs. supply voltage change
vs. load change
vs. aging / day
vs. aging / year
vs. aging / 10 year
holdover
start up time
Warm-up time
5
minutes
to ±100ppb of final frequency (1 hour
reading) @ +25°C
-3
-4
-3
-0.5
-60
-500
+3
+4
+3
+0.5
+60
+500
ppm
ppb
ppb
ppb
ppb
ppb
µsec
at time of shipment,
V
S
±5% static
Load ±5% static
after 30 days of operation
after 30 days of operation
after 30 days of operation
over 8 hours and 5°C temp jump @ T
0
Page 1 of 8
Vectron International • 267 Lowell Road, Hudson Suite 102, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Performance Specifications
Supply Voltage (Vs)
Parameter
Supply voltage (standard)
Power consumption
Min
4.75
Typical
5.0
Max
5.25
3.25
1.5
Units
VDC
Watts
Watts
Condition
during warm-up
steady state @ +25°C
RF Output
Signal [standard]
Load
Signal Level (Vol)
Signal Level (Voh)
rise time
fall time
Duty Cycle
Tuning Range
40
3.4
15
0.8
4.6
10
10
60
Fixed OCXO; No adjust
HCMOS
pF
VDC
VDC
ns
ns
%
@ (Voh-Vol)/2
with Vs=5.0V and 15pF Load
with Vs=5.0V and 15pF Load
Frequency Tuning (EFC)
Additional Parameters
-104
-129
-140
-145
-153
-155
-90
-120
-130
-140
-148
-150
12
Handling & Processing Note
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
g
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
100khz
Phase Noise
3
@ 10MHz
Weight
Processing & Packing
EEPROM (SCL, SDA) Pin 2; Pin 7
Parameter
I2C Bus Voltage
DC Electrical Characteristics
High Level Input Voltage (Vih)
Low Level Input Voltage (Vil)
Electrical Characteristic
SCL Clock Frequency
Communication
EEPROM
I2C Device 7-bit Address: 1010100
0
100
kHz
Product is to communicate via industry stan-
dard I2C bus timing. I
2
C is a Phillips Semicon-
ductor registered trademark.
0.7* VI2C
-0.3
VI2C +0.3
0.3 VI2C
Vdc
Vdc
SDA (internally pulled-up to V
I2C
with a 22kohm
resistor) and SCL
SDA (internally pulled-up to V
I2C
with a 22kohm
resistor) and SCL
Product is to communicate via industry stan-
dard I
2
C bus timing. I
2
C is a Phillips Semicon-
ductor registered trademark.
Min
Typical
2,8
Max
Units
VDC
Condition
For full EEPROM Map please contact factory
Page 2 of 8
Vectron International • 267 Lowell Road, Hudson Suite 102, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Reference Voltage
supply voltage (Vs)
Output Load
Operable Temperature Range
Storage Temperature Range
-40
-40
7.0
50
+85
+85
V
pF
°C
°C
with Vs= 5.0 VDC
Absolute Maximum Ratings
supply voltage (Vs)
Output Load
Operable Temperature Range
Storage Temperature Range
-40
-40
7.0
50
+85
+85
V
pF
°C
°C
with Vs= 5.0 VDC
Outline Drawing / Enclosure
G334
MD-203
19,05
0,1
12,7
0,1
2
Height “H”
11.3
tbd
2,5
cover material
metal
25,4
0,2
A
A(5:1)
6,35
0,1
19,05
0,1
25,6
0,2
SEATING PLANE
H+-1
0,2
3
3
Pin Connections
1
RF Output
EEPROM SDA (I2C)
GND
N.C
EEPROM SCL (I2C)
Vref (reference voltage)
N.C.
Vtemp output
Supply Voltage Input (Vs)
2
4
6
7
13
15
17
19
0,1
Page 3 of 8
Vectron International • 267 Lowell Road, Hudson Suite 102, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Dimensions in mm
Standard Shipping Method (MD-203 )
Lage im Gurt
Position in tape
Pin1
A
1.75±0.1
K
4.0
XXXXX
XXXXX
Abwickelrichtung
Unwinding direction
B
B
Schnitt A - A
R0
.75
A
A
P
0.20
±0.05
Bei W < 32mm nur obere Lochreihe vorhanden
if W < 32mm only upper hole line existent
Schnitt B - B
Maßangaben in mm:
A, B und K Maße von Bauelement abhängig
Fertigungstoleranzen entsprechen der DIN IEC 286-3
Dimension in mm:
A, B und K are dependent uppon component dimensions
production tolerance complying DIN IEC 286-3
All dimensions in millimeters unless otherwise stated
Enclosure Type
MD-203
Tape Width W (mm)
44
Quantity per meter
31.25
Quantity per reel
150
W
B
Dimension P
32
Recommended Reflow Profile
IPC/JEDEC J-STD-020 (latest revision)
Additional Information:
This SMD oscillator has been designed for pick and place reflow soldering.
SMD oscillators must be on the top side of the PCB during the reflow process.
Additional Environmental Conditions
Parameter
Rapid temperature
changes
Vibration
Shock
Solderability
Solvent resistance
ESD
Moisture Sensit.
RoHS compliance
Washable
Description
JESD22-A104D Condition G -40...125C
MIL-STD-883 Meth 2007 Cond A 20G 20-2000Hz 4x in each 3axis 4 min
MIL-STD-202 Meth 213 Cond.C 100G 6ms 6 shocks in each direction
J_STD_002C Cond A, Through hole device/ Cond. B, SMD 255C (diving time
50,5sec.) Dip+Look with 8h damp pre-treatment: solder wetting >95%
MIL-STD-883 Meth 2015 Solv. 1,3,4
HBM JESD22-A114-F Class 1C 10* 1000V
Level 1 JESD22-A113-B
100% RoHS 6 compliant
washable device
Note:
All temperatures refer to topside of the package, measured on the package body surface.
Page 4 of 8
Vectron International • 267 Lowell Road, Hudson Suite 102, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Typical Performance Data
typical warm up
@ MD-2031-DAE-1080-10M00
typical temperature stability
@ MD-2031-DAE-1080-10M00
10
700,0
690,0
680,0
Frequency deviation [ppb]
8
6
4
2
0
-2
-4
-6
-8
Frequency deviation [ppb]
670,0
660,0
650,0
640,0
630,0
620,0
610,0
600,0
150
250
350
450
Time [sec]
550
650
-10
-40
-20
0
20
Temperature [°C]
40
60
80
typical Phase Noise
@ MD-2031-DAE-1080-10M00
typical residual error compare to fit curve
@ MD-2031-DAE-1080-10M00
0,3
Residual error compare to fitcurve [ppb]
0,2
0,1
0
-40
-0,1
-20
0
20
40
60
80
-0,2
-0,3
Temperature [°C]
Page 5 of 8
Vectron International • 267 Lowell Road, Hudson Suite 102, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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