MD-174--D-X-T [VECTRON]

Low Noise GNSS Disciplined;


型号：	MD-174--D-X-T
厂家：	Vectron International, Inc
描述：	Low Noise GNSS Disciplined
文件：	总7页 (文件大小：714K)
中文：	中文翻译
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MD-174

Low Noise GNSS (GPS and GLONASS) Disciplined

Oscillator Module

MD-174

The MD-174 is a Vectron GNSS disciplined module. It is a fully integrated GNSS disciplined oscillator module in a compact surface mount 40 x 50

mm footprint. The module has an embedded 34 channel receiver that is both GPS and GLONASS compatible and provides a sinewave 10 MHz

and HCMOS 1 pps output. An onboard OCXO provides stability in the unlocked mode. The module operates from -40 ^oC to +85 ^oC.

Features

Applications

•ꢀ Radar systems

•ꢀ Digital Video Broadcast

•ꢀ E911 Location Systems

•ꢀ General Timing and Synchronization

•ꢀ Military Radio

•ꢀ Embedded GNSS Receiver - GPS and Glonass Compatible

•ꢀ Field upgradeable for Galileo in 2017

•ꢀ 1pps HCMOS output signal standard

•ꢀ 10MHz sinewave output standard

•ꢀ Modiﬁed NMEA (VSIP)

•ꢀ Evaluation kit with software available

•ꢀ -135 dBc/Hz phase noise at 10 Hz oﬀset

•ꢀ -170 dBc/Hz phase noise ﬂoor

Block Diagram

Serial

Communications

Interface

Output Locked

Module Status

Hardware

Reset

1PPS

Output

Processor/

Controller

Antenna

Input

Output

Frequency

Generation

GPS

Receiver

RF Output

10 MHz

Aux Input

OCXO

Figure 1. Functional Block Diagram

Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com

Summary Speciﬁcations

Hold Over Performance

Hold Over Time

Hold Over

10 min

DT=

2 ^oC

1 hr

DT=

2 ^oC

1 hr

DT=

10 ^oC

4 hr

DT=

2 ^oC

4 hr

DT=

10 ^oC

24hr

DT=

2 ^oC

24 hr

DT=

10 ^oC

Temperature Change

Model

Maximum Accumulated Hold Over in us

MD-1740-DXE-DAOC-10M0000000

0.3

1.8

7.2

8.0

Summary Performance Characteristics

Model

Warm

Up Time

(min-

Aging / Temper- Module Accuracy to Accuracy

Warm

Steady Voltage

day

ature

Stabil-

ity

Height

(mm)

UTC

(+/-1s)

(ns)²

(+/-) ³

State

(V)

(ppb)¹

Power @ Power @

utes)

25 ^oC

(W)

25 ^oC

(W)

(ppb)

MD-1740-DXE-DAOC-10M0000000

0.5

1E-12

4.5

2.8

5.0 V

analog/

3.3V

digital

Phase Noise/ ADEV

10 Hz

-135

100

1 kHz

10 kHz

100 kHz

-170

ADEV

t=1s

ADEV

t=10s

at 10 MHz

-155

-165

-170

1E-11

5E-11

Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com

Speciﬁcations

Internal Receiver Characteristics

Parameter

Type

Condition

Timimg w/ Auto Position Lock

Number of channels

Frequency band

GPS L1 C/A

SBAS L1 C/A

GLONASS L1 OF

Galileo

WAAS, MSAS, EGNOS, GAGAN

Firmware update will be required

Tracking capability

sensitivity tracking

sensitivitiy acquisition

Position Accuracy

TTFF

12 satellites

-161 dBm

-147 dBm

< 2.5 m CEP

<5 seconds

Open sky. 24 hours

HOT (currrent almanac, position, time and

ephemeris)

<35 seconds

< 35 seconds

GPS Antenna

Warm (current almanac, position, time)

Cold (no data)

Parameter

Min

Typical

Max

Units

Condition

Antenna Input Voltage⁴

2.6

3.1

5.5

V_DC

3.3 or 5V antenna operation supported -

pin 6

Antenna Current

100

see protocol for under current ﬂag and short

circuit protection

RF Output Waveform Characteristics

Waveform

Load

Sinewave

Output Power

Harmonics

Spurious

-30

-80

dBm

dBc

1pps Output Characteristics

Parameter

Waveform

Min

Typical

Max

Units

Condition

LVCMOS

High-level output voltage (V_OH

)

3.0

3.4

0.4

> 100 Ohms

Low-level output voltage (V_OL

)

0.0

Pulse Width

Aux 1pps input Characteristics

Parameter

Waveform

Min

Typical

Max

Units

Condition

LVCMOS, TTL

High-level input voltage (V_iH)

Low-level input voltage (V_IL)

2.4

VDC

15 pFll10kOhm

0.0

0.3

Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com

Speciﬁcations

Lock Status Indicator

Parameter

Module Locked

Module Not Locked

Min

Typical

Max

100

Units

%V_cc

Condition

Module Hardware OK Indicator

Module Hardware OK

100

%Vcc

Module Hardware Failure

Module Hardware Reset

0.5

%Vcc

V_DC

Reset Module

2 kOhm internal pullup

Serial Communications Interface

Rx high-level input voltage (V_IH

)

2.8

-0.5

3.15

-0.2

V_DC

Rx low-level input voltage (V_IL)

0.0

3.3

0.0

0.5

0.2

V_DC

Tx high-level output voltage (V

)

Tx low-level output voltage (V_OL

)

Update rate

Communications Protocol

Pulse width⁷

Vectron Binary/NMEA 0183

See VSIP Command List for Full Details

uSec

Supply Voltage

Supply voltage (Vcc)

+4.75

+3.0

+5.0

+3.3

+5.25

+3.4

V_DC

Supply voltage (Dig Vcc)

Absolute Maximum Ratings

Supply voltage (Vcc)

Dc voltage on any I/O pin

Output load

V_DC

3.9

V_DC

100

Min

-55

Ohms

AC ripple

mVpk-pk

10Hz to 1MHz

Environmental Conditions

Parameter

Typical

Max

Units

Condition

Operating temperature

Humidity @ 40˚C

see ordering information for avaialble ranges

Storage Temperature

+125

˚C

Physical Characteristics

120

Weight

g-sensitivity

ppb/g

10 to 1000 Hz

Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com

Sp c ﬁcations

Reliability

VI qualiﬁcation includes aging various extreme temperatures, shock and vibration, temperature cycling, and IR reﬂow simulation.

The MD-171 family is capable of meeting the following qualiﬁcation tests:

Environmental Compliance

Parameter

Mechanical shock

Conditions

MIL-STD-202, Method 213 condition B

Package Outline

Mechanical vibration

Resistance to solvents

MIL-STD-202, Method 204 condition A

MIL-STD-202, Method 215

Handling Precautions

Although ESD protection circuitry has been designed into the MD-171 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

Minimum

1500 V

Conditions

MIL-STD-833, Method 3015

JEDEC, JESD22-C101

Human body model

Charged device model

1000 V

Package Outline

.200

.300

PIN 36

PIN 1

PIN 36

.100

TYP

PIN 1

.900

.600

.500

1.800

2.000

.600

.900

.200

1.600

.065

.050

.025

DETAIL C

SCALE 2.5 : 1

Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com

Pin Conﬁguration

36 Pin I/O Connections

Number

Name

PPS_OUT

REF_IN

Description/comment

1 pps output

Reference input

3,5,7,20,26,36

D_GND

ANT_IN

VCC_ANT

D_VCC

Digital Ground

Antenna

Antenna Supply

Digital 3.3V supply

Analog Ground

Analog 5.0V supply

8,27

9,12,13,14,16,17,18,19

10,11

A_GND

A_VCC

RF_OUT

Sinewave or CMOS (see ordering code)

21,22,29,32,33,34,35

N/C

RX_IN

Do not connect - leave ﬂoating

Data in - internal pull up

data out

TX_OUT

AUXIO

MOD_RST

STATUS

LOCK

Pull up - active low

pull down

Ordering Information

MD - 174 0 - DX E - DAOC - 10M0000000

Frequency

Product Family

MD: Precision Modules

Embedded Oscillator

Package

DAOC (Digitally Assisted OCXO)

40 x 50mm

Height

0: 23 mm

Supply Voltage

D: +5V (3.3V

digital supply

needed).

Temperature Range

D: -40°C to +70°C

E: -40°C to +85°C

J: -20°C to +70°C

T: 0°C to +70°C

RF Output Code

X: standard outputs

per speciﬁcation

Notes

1) Holdover and aging performance is after 7 days of power-on time. Temperature and aging rates are when

device is not locked. Performance measured in still air. 1

2) After customer applies oﬀset corrected using cable delay command while locked, after 24 hours of locked

operation

3) Allan Variance at t=86400s while locked, after 24 hours of locked operation

4) Antenna supply pin at pin 21 is an input voltage from customer. Vectron couples the DC input voltage to the

rf signal of the GPS signal. The customer does not need to provide any additional blocking or coupling circuitry.

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) 7268.801.100

1F-2F, No 8 Workshop, No 308 Fenju Road

WaiGaoQiao Free Trade Zone

Pudong, Shanghai, China 200131

Tel: 86.21.5048.0777

Fax: 1.888.329.8328

Fax: +49 (0) 7268.801.282

Fax: 86.21.5048.1881

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: 082317dmc

Vectron International • 267 Lowell Road, Unit 102, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com

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