首页 > 器件类别 >

MD-023

Extended Holdover Crystal Oscillator

厂商名称:Vectron International, Inc.

厂商官网:http://www.vectron.com/

下载文档
文档预览
Extended Holdover Crystal Oscillator
MD-023
MD-023
The MD-023 series is the first product to be in introduced in Vectron’s Extended Holdover Crystal Oscillator platform. With aging rates of
0.08ppb/day and temperature stabilities of 0.1ppb from 0 to 700C, the MD-023 is capable of providing holdover of 6 µs for 24 hours over a 100C
temperature change. The product employs an ultrastable ovenized quartz oscillator with proprietary Vectron digital correction algorithms to
achieve rubidium like performance at a fraction of the cost and power.
Features
• Ultrastable 10 MHz OCXO
• Proprietary digital correction algorithms
• Digital EFC adjust
• Serial communications interface standard
• Low Phase Noise Outputs
Applications
• 3G Basestations (WCDMA, CDMA2000)
• LTE
• WiMAX Basestations
• Digital Video Broadcast
• E911 Location Systems
• General Timing and Synchronization
• Military Radio
Block Diagram
Status
Indicator
Hardware
Reset
Serial
Communications
Interface
RF
Outputs
Processor/
Controller
Output
Frequency
Generation
1 pps out
Quartz Oscillator
(OCXO or TCXO)
Figure 1.
Functional Block Diagram
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Specifications
RF Output Stability
Parameter
Nominal Frequency
Short-term stability
(All conditions after 24 hours)
15
Phase noise (All conditions)
20
-95
-125
-140
-145
-145
Frequency Temperature Stability
Aging
Frequency Pullability
Frequency resolution
Holdover Time
24 hours
Min
+/-500
1
0.1
0.08
E-12
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ppb pk-pk
ppb/day
ppb
E-12
Max
6
Units
µs
20 bit DAC
Conditions
after 7 days on power with a 10 0C
temperature change during holdover
@ Tau = 10 sec
@ 10Hz offset
@ 100Hz offset
@ 1kHz offset
@ 10kHz offset
@>10kHz offset
0 to 70 0C
after 7 days on power
Min
Typical
10
5
10
Max
Units
MHz
E-12
@ Tau = 1 sec
Condition
Holdover Capability
Typical
RF Output Waveform Characteristics
Waveform
High-Level Output Voltage (V
OH
)
Low-Level Output Voltage (V
OL
)
Rise/Fall Time
Duty Cycle
Waveform
High-Level Output Voltage (V
OH
)
Low-Level Output Voltage (V
OL
)
Pulse width
Supply voltage
Current consumption
AC ripple
Module Hardware OK
Module Hardware Failure
Reset Module
0
3.3
+11.4
2.4
0.0
10
40
3.0
0.0
3
50
TTL
3.6
0.5
V
DC
V
DC
µs
programmable from 10 to 100 µs
TTL pulse
CMOS
3.3
0.3
5
60
V
DC
V
DC
nSec
%
< -0.5mA Load
< 0.5mA Load
15pF
15pF
1pps Output Characteristics
Supply Voltage
+12
+12.6
1500
700
200
V
DC
mA
mA
mVpk-pk
V
DC
V
DC
During Warm-up
During steady state operation
10Hz to 1MHz
<10mA Load
<10mA Load
Load able to sink >2mA
Status Indicator
0.5
Module Hardware Reset
0
0.3
V
DC
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Package Outline and Interface Specifications
Serial Communications Interface
Parameter
Rx high-level input voltage (V
IH
)
Rx low-level input voltage (V
IL
)
Tx high-level output voltage(V
OH
)
Tx low-level output voltage (V
OL
)
Communications Protocol
Min
3.0
-0.3
3.0
-0.3
0.0
3.3
0.0
0.3
Typical
Max
3.3
0.3
Units
V
DC
V
DC
V
DC
V
DC
Command List is Vectron Custom - available on request
Condition
15 Pin I/O Connections
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Name
Vcc
Ground
Ground
Ground
RF output
Vcc
Ground
N/C
N/C
Ground
1pps
Status Indicator
Hardware Reset
Rx
Tx
Description
12VDC in
10 MHz
12VDC in
1pps TTL out
Serial communications Receive
Serial Communcations Transmit
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Absolute Maximum Ratings
Parameter
Supply Voltage (Vcc)
DC Voltage on any I/O pin
Output Load
Value
18 V
DC
5.5 V
DC
10 Ohms
Environmental Conditions
Parameter
Operating temperature
Humidity @ 40˚C
Storage Temperature
Conditions
-0 ˚C to +70 ˚C
90 %
-55 ˚C to +125 ˚C
Reliability
VI qualification includes aging various extreme temperatures, shock and vibration, temperature cycling, and IR reflow simulation. The MD-011
family is capable of meeting the following qualification tests:
Environmental Compliance
Parameter
Mechanical shock
Mechanical vibration
Resistance to solvents
Conditions
MIL-STD-2002, Method 213 condition B
MIL-STD-2002, Method 204 condition A
MIL-STD-2002, Method 215
Handling Precautions
Although ESD protection circuitry has been designed into the C6350 proper precautions should be taken when handling and mounting. VI
employs a human body model (HBM) and a charged-device model (CDM) for ESD susceptibility testing and design protection evaluation.
ESD Ratings
Model
Human body model
Charged device model
Minimum
1500 V
1000 V
Conditions
MIL-STD-833, Method 3015
JEDEC, JESD22-C101
For Additional Information, Please Contact
Vectron International
267 Lowell Road
Hudson, NH 03051
Tel: 1.888.328.7661
Fax: 1.888.329.8328
USA:
Vectron International
Landstrasse, D-74924
Neckarbischofsheim, Germany
Tel: +49 (0) 3328.4784.17
Fax: +49 (0) 3328.4784.30
Europe:
Vectron International
1F-2F, No 8 Workshop, No 308 Fenju Road
WaiGaoQiao Free Trade Zone
Pudong, Shanghai, China 200131
Tel: 86.21.5048.0777
Fax: 86.21.5048.1881
Asia:
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:6/2011
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
查看更多>
热门器件
热门资源推荐
器件捷径:
L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ
需要登录后才可以下载。
登录取消