MD-173_16 [VECTRON]
High Stability Coefficient Oscillator;
| 型号： | MD-173_16 |
| 厂家： | 
Vectron International, Inc |
| 描述： | High Stability Coefficient Oscillator |
| 文件： | 总6页 (文件大小：723K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MD-173
High Stability Coefficient Oscillator -
I2C interface Oven Controlled Crystal Oscillator
MD-173
The MD-173 is a Vectron “Coefficient Oscillator”(CCXO) that contains a high-stability ovenized crystal oscillator and an I2C
interface that communicates with temperature and current sensors, and an onboard EEPROM. The interface enables the customer
to improve upon the already exceptional stability of the oscillator. Provided in a fully hermetic 28 x 38 mm package, the device is
capable of aging rates of ≤ 0.06 ppb/day and uncorrected temperature stabilities of 0.4ppb from 0 to 70 0C. Use of the information
provided in the I2C interface provides a cost effective means of further improving temperature stability.
Features
•ꢀ Reflow process compatible
Applications
•ꢀ LTE base stations
•ꢀ Uncorrected temperature stability to 0.4 ppb
•ꢀ Aging rate to 0.06 ppb/day
•ꢀ Rubidium replacement
•ꢀ Military communication equipment
•ꢀ Frequency range 5 to 20 MHz
•ꢀ Standard frequencies: 5, 10, 12.8, 20 MHz
•ꢀ I2C interface with frequency coefficients, temperature
sensor, and current sensor
Performance Specifications
Frequency Stabilities1
(Stabilities listed for ≤10 MHz. For stabilities > 10 MHz refer to page 6)
Parameter
Min
Typical
Max
Units
Condition
vs. Operating Temperature
Range (referenced to +25°C)
(uncorrected)
-0.4
-0.6
-0.8
+0.4
+0.6
+0.8
ppb
ppb
ppb
0 to +70°C
-20 to +70°C
-40 to +85°C
Initial Tolerance
vs. Supply Voltage Change
vs. Load Change
vs. Aging / Day
vs. Aging / Day
-25
-0.5
-0.2
-1
-0.1
-0.06
-15
-10
-75
-0.2
+25
+0.5
+0.2
+1
+0.1
+0.06
+15
+10
+75
+0.2
ppb
ppb
ppb
ppb
ppb
ppb
ppb
ppb
ppb
ppb
at time of shipment, nominal EFC
VS 5ꢀ
Load 5ꢀ
after 24 hours operation
after 72 hours operation
after 7 days operation
after 72 hours operation
vs. Aging/ Day
vs. Aging / 1st Year
vs. Aging / Year (following year)
vs. Aging/ 10 years
Hysteresis
after 72 hours operation
maximum 4th order curve fit error
over -40 to 85 10 oC/hour
Retrace2
-10
+10
5
ppb
Warm-up Time
minutes
to 10ppb of final frequency (1 hour reading)
@ +25°C
Improved Frequency versus temperature F(T) performance obtained using on board temperature sensor (T) and frequency vs. tem-
perature coefficients (An)stored in EEPROM, using formula:
F(T)=A4T4+A3T3+A2T2+A1T+A0
Page 1 of 6
Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Performance Specifications
Supply Voltage (Vs)
Parameter
Min
4.75
11.4
Typical
5.0
Max
5.25
12.6
4.5
Units
VDC
Condition
Ordering code D
Supply Voltage (Vs)
12.0
VDC
Ordering code B , temp stability T and J only
during warm-up, all temperatures
steady state @ +25°C
Watts
Watts
Watts
Watt
1.8
Power Consumption
4
steady state @ -40°C
1.0
steady state @ +85°C
RF Output
Start Time
1
2
s
time required to achieve 90ꢀ of amplitude
frequencies ≥10 MHz
Subharmonics
Signal [standard]
Load
-30
dBc
HCMOS
15
pF
VDC
VDC
ꢀ
Signal Level (Vol)
Signal Level (Voh)
Duty Cycle
0.5
55
with Vs=5.0V & 12V and 15pF Load
with Vs=5.0V & 12V and 15pF Load
@ (Voh-Vol)/2
3.5
45
Signal
Sine Wave
Load
50
+8
Ω
Output Power @ 5.0V,12 V
Harmonics
+5
+11
-40
dBm
dBc
Frequency Tuning (EFC)
16 bit DAC controlled through I2C interface
(fixed frequency option available)
Tuning range
150
350
ppb
Linearity
10
ꢀ
Tuning Slope
Positive
Additional Parameters
Parameter
Phase noise3
Min
Typical
Max
Units
Condition
-95
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
-125
-135
-140
-145
@ 10MHz
@ 10MHz
5e-12
8e-12
1e-11
5e-11
1 s tau
10 s tau
100 s tau
1000 s tau
Allan Deviation
g-sensitivity
Weight
1
ppb/g
g
30
Page 2 of 6
Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
EEPROM (SCL, SDA) Pin 1, Pin 2
Parameter
Min
0
Typical
3.3
Max
Units
V
Condition
BUS voltage
SCL Clock Frequency
100
kHz
22.1 kOhm pull-up resistor used on SDA and
SCL lines
Communications
Reference I2C Protocol
AC electrical characteristics
Devices and addresses
-40 to 85 oC for all parameters
EEPROM - Atmel AT24C08C for EEPROM, address 1010100-1010111
Temperature Sensor - LM73 (set to 14 bit resolution), address 1001000
Current Sensor – MCP3021, address 1001101
DAC for EFC - TI DAC8571, address 1001100x
Reserved Addresses (used by factory)
1010100x
1010101x
1010110x
1010111x
1001000x
1001101x
0101001x
0101010x
0101000x
1001100x
1110111x
For full EEPROM Map please contact factory
Absolute Maximum Ratings
15.0
VDC
50
open
pF
Ohms
CMOS
Sine
Output load
25
Operable temperature range implies the
device will continue to operate with no long-
term damage to unit; however, it will not be
specification compliant outside the operating
temperature range.
Operable temperature range
-55
+95
°C
Environmental and Product Classification
Shock (Endurance)
Sine Vibration (Endurance)
Random Vibration (Endurance)
Humidity
MIL-STD-202, Method 213, Condition J, 30g 11 ms
MIL-STD-202, Method 201 and 204, Condition A, except 5g to 500 Hz, 1 sweep each axis
MIL-STD-202, Method 214, Condition I-D
MIL-STD-202, Method 103, Condition B, 100ꢀ rh
MIL-STD-202, Method 112, Condition D, hermetic, washable
MIL-STD-202, Method 105, sea level to space
MIL-STD-202, Method 210, Condition A,B,C
MIL-STD-202, Method 211, Condition C (5 bends at 45o, 2 lbs)
1
Seal
Altitude
Resistance to Soldering Heat
Terminal Strength
Moisture Sensitive Level
RoHS
6 (fully compliant)
Storage Temperature Range
-55
+125
°C
Page 3 of 6
Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Frequency vs temperature plot -uncorrected
Blue line - measured data -
Red line - curve fit of data.
Page 4 of 6
Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Outline Drawing / Enclosure
Through hole
Package configuration A
Height “H”
19 max
Pin Length “L”
4.5 mm min
0
Pin Connections
1
2
3
4
5
I2C Clock
I2C Data
Supply Voltage Input (Vs)
RF Output
Ground (Case)
Surface mount
Package configuration B
Height “H”
20.3 max
Pin Length “L”
4.5 mm min
1
Pin Connections
4,5,6,7,
No Connect
11,12,13
1
2
I2C Clock
I2C Data
3
Supply Voltage Input (Vs)
RF Output
8
9,10
Ground (Case)
all dimensions in mm
Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Ordering Information4
MD - 173 0 - D A E - 109 1 - 10M0000000
Frequency
5M00000000
10M0000000
12M8000000
20M0000000
Product Family
MD: Module
Model
173
(others available on request)
Frequency Control
0:Fixed frequency
1: 150 to 350 ppb
Package
0: package A - THT
1: package B - SMD
Stability Code
400: 0.4 ppb
600: 0.6 ppb
800: 0.8 ppb
109: 1.0 ppb
159: 1.5 ppb
209: 2.0 ppb
Supply Voltage
B: 12V
D: 5V
Temperature Range
E: -40°C to +85°C
J: -20°C to +70°C
T: 0°C to +70°C
RF Output Code
A: HCMOS
E: Sinewave
Stability code - Temperature and Frequency Options
Frequency
5 to 10 MHz
> 10 MHz
0 to +70 oC
-20 to +70 oC
-40 to +85oC
400
600
800
109
159
209
Additional Ordering Options
Additional ordering options available include custom aging rates, custom temperature ranges, custom temperature stabilities,
custom phase noise requirements, and improved g-sensitivity. These modifications require a custom dash number - please
contact the factory for additional information.
Design Tools
Vectron stocks the following items for small orders and prototype development:
MD-1730-DEE-8000-5M00000000
Vectron stocks the following evaluation board for this product:
OCXO Evaluation Board
Application Notes:
Coefficient Oscillators
Notes:
1. Unless otherwise stated, all values are valid after warm-up time and refer to typical conditions for supply voltage, frequency
control voltage, load, and temperature (25°C).
2. Retrace defined as f1-fo where fo is the reading after the unit has been on power for 24 hours, and f1 is the frequency after 24
hours off followed by 60 minutes on.
3. Phase noise degrades with increasing output frequency.
4. Not all options and codes available at all frequencies.
For Additional Information, Please Contact
USA:
Europe:
Asia:
Vectron International
267 Lowell Road, Unit 102
Hudson, NH 03051
Tel: 1.888.328.7661
Vectron International
Landstrasse, D-74924
Neckarbischofsheim, Germany
Tel: +49 (0) 3328.4784.17
Vectron International
68 Yin Cheng Road(C), 22nd Floor
One LuJiaZui
Pudong, Shanghai 200120, China
Tel: +86 21 6194 6886
Fax: +86 21 6194 6699
Fax: 1.888.329.8328
Fax: +49 (0) 3328.4784.30
Disclaimer
Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application.
No rights under any patent accompany the sale of any such product(s) or information.
Rev:2/24/2016 jar
Page 6 of 6
Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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