Sierra Wireless AirPrime WP7601 Guide de configuration rapide

AirPrime WP7601

Hardware Integration Guide

41111210

Rev 1

Hardware Integration Guide

Rev 1 Jul 17 2 41111210

Important

Notice Due to the nature of wireless communications, transmission and reception of data

can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be

totally lost. Although significant delays or losses of data are rare when wireless

devices such as the Sierra Wireless modem are used in a normal manner with a

well-constructed network, the Sierra Wireless modem should not be used in

situations where failure to transmit or receive data could result in damage of any

kind to the user or any other party, including but not limited to personal injury,

death, or loss of property. Sierra Wireless accepts no responsibility for damages

of any kind resulting from delays or errors in data transmitted or received using

the Sierra Wireless modem, or for failure of the Sierra Wireless modem to

transmit or receive such data.

Safety and

Hazards Do not operate the Sierra Wireless modem in areas where blasting is in progress,

where explosive atmospheres may be present, near medical equipment, near life

support equipment, or any equipment which may be susceptible to any form of

radio interference. In such areas, the Sierra Wireless modem MUST BE IN

AIRPLANE MODE OR POWERED OFF. The Sierra Wireless modem can

transmit signals that could interfere with this equipment.

Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is

on the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE IN

AIRPLANE MODE OR POWERED OFF. When operating, the Sierra Wireless

modem can transmit signals that could interfere with various onboard systems.

Note: Some airlines may permit the use of cellular phones while the aircraft is on the

ground and the door is open. Sierra Wireless modems may be used at this time.

The driver or operator of any vehicle should not operate the Sierra Wireless

modem while in control of a vehicle. Doing so will detract from the driver or

operator's control and operation of that vehicle. In some states and provinces,

operating such communications devices while in control of a vehicle is an offence.

Limitation of

Liability The information in this manual is subject to change without notice and does not

represent a commitment on the part of Sierra Wireless. SIERRA WIRELESS AND

ITS AFFILIATES SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL

DIRECT, INDIRECT, SPECIAL, GENERAL, INCIDENTAL, CONSEQUENTIAL,

PUNITIVE OR EXEMPLARY DAMAGES INCLUDING, BUT NOT LIMITED TO,

LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR REVENUE

ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS

PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN

ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR THEY ARE

FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY.

Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its

affiliates aggregate liability arising under or in connection with the Sierra Wireless

product, regardless of the number of events, occurrences, or claims giving rise to

liability, be in excess of the price paid by the purchaser for the Sierra Wireless

product.

Preface

Rev 1 Jul 17 3 41111210

Patents This product may contain technology developed by or for Sierra Wireless Inc. This

product includes technology licensed from QUALCOMM®. This product is

manufactured or sold by Sierra Wireless Inc. or its affiliates under one or more

patents licensed from InterDigital Group and MMP Portfolio Licensing.

Trademarks Sierra Wireless®, AirPrime®, AirLink®, AirVantage®and the Sierra Wireless logo

are registered trademarks of Sierra Wireless, Inc.

Windows®and Windows Vista® are registered trademarks of Microsoft

Corporation.

QUALCOMM®is a registered trademark of QUALCOMM Incorporated. Used

under license.

Other trademarks are the property of their respective owners.

Contact

Information

Revision

History

Sales information and technical

support, including warranty and returns Web: sierrawireless.com/company/contact-us/

Global toll-free number: 1-877-687-7795

6:00 am to 6:00 pm PST

Corporate and product information Web: sierrawireless.com

Revision

number Release date Changes

1June 2017 FCC/IC certification

Rev 1 Jul 17 4 41111210

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Module Power States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

RF Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Conducted Tx power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Routing Constraints and Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

General Rules and Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

PCB Layout Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

PCB Specifications for the Application Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Recommended PCB Land Pattern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Routing Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

UIM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

RF Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

EMC and ESD Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Mechanical Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Signal Reference Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Regulatory Compliance and Industry Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Important Notice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Safety and Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Important Compliance Information for North American Users . . . . . . . . . . . . . . . . . . . 15

Rev 1 Jul 17 5 41111210

1: Introduction

The AirPrime WP7601 is an industrial-grade LGA 239-pad module that provides voice

and data connectivity on LTE networks. The module also provides GNSS functionality

as a SKU-configuration.

Accessories

A hardware development kit is available for AirPrime WP-series modules. The kit

contains hardware components for evaluating and developing with the module,

including:

•Development board

•Cables

•Antennas (Additional antennas may be required to support all bands.)

•Other accessories

Rev 1 Jul 17 6 41111210

2: Power

Power Supply

The host provides power to the AirPrime WP7601 through multiple power and ground

pins. The host must provide safe and continuous power at all times; the module does

not have an independent power supply, or protection circuits to guard against

electrical issues.

For detailed pinout and voltage/current requirements of this module, see the AirPrime

WP76XX Product Technical Specification.

Module Power States

The module has three main power states, as described in Table 2-1.

Table 2-1: Supported Power States

State Description Wake-Up Events

OFF Module is off (no power to the system).

Apply power for system to go toActive state. Apply power.

Interrupt Simple wakeup sources are configured to interrupt from this

power-saving state to the Active state. An event generated from a state change of

RESET_IN_N or POWER_ON_N, or a

timeout event.

Active The module may be fully functioning (WWAN radio and GNSS

radio active), or be operating in airplane mode (WWAN radio off).

Module actively reduces power consumption by disabling

components that are not in use (for example, stepping down

clock signals, putting USB bus into selective suspend, etc.)

System wakes up (returns to fully active

mode) automatically as required, or can be

woken directly via wakeable GPIOs.

Rev 1 Jul 17 7 41111210

3: RF Specifications

The AirPrime WP7601 operates on the frequency bands listed below.

Conducted Tx power

Table 3-1: LTE Frequency Band Support

Band Frequency (Tx) (MHz) Frequency (Rx) (MHz)

B4 1710–1755 2110–2155

B13 777–787 746–756

Table 3-2: GNSS Frequency Band Support

Band Frequencies (MHz)

GPS 1575.42 ± 1.023

GLONASS 1597.52–1605.92

Galileo 1575.42 ± 2.046

BeiDou 1561.098 ± 2.046

Table 3-3: Conducted Tx Max Output Power Tolerances—LTE

RF band Min (dBm) Typ (dBm) Max (dBm) Notes

B4 22 23 24 Connectorized (Class 3)

B13 22 23 24 Connectorized (Class 3)

Rev 1 Jul 17 8 41111210

4: Routing Constraints and Recommen-

dations

This section describes general routing constraints and recommendations for the

AirPrime WP7601 module.

Note: This is a non-exhaustive list of suggested design guidelines. The developer is respon-

sible for deciding whether to implement these guidelines.

General Rules and Recommendations

Clock and other high-frequency digital signals (e.g. serial buses) should be routed as

far as possible from the module’s analog signals.

If the application design makes it possible, all analog signals should be separated

from digital signals by a ground trace on the PCB.

Tip: Avoid routing any signals under the module on the application board.

PCB Layout Recommendations

Ground pads should be re-flowed on to the host PCB with < 30% voiding to allow

effective heat dissipation.

Power Supply

When designing the power supply, make sure that VBAT_BB/VBAT_RF meet the

requirements listed in the AirPrime WP76XX Product Technical Specification.

Careful attention should be paid to the following:

•Power supply quality—PFM, or PSM systems should be avoided; Low ripple,

linear regulation or PWM converters are preferred for low noise.

•Capacity to deliver high current peaks in a short time (for pulsed radio emission)

•VBAT_BB/VBAT_RF must support peak currents with an acceptable voltage

drop that guarantees the minimum required VBAT_BB/VBAT_RF value.

•VBAT_BB/VBAT_RF signal pads must never exceed the maximum required

VBAT_BB/VBAT_RF value, otherwise the module’s power amplifier and GPS

chipset may be severely damaged.

•A weakly-designed (not robust) power supply could affect EMC performance, the

emission spectrum, and the phase error and frequency error.

Routing Constraints and Recommendations

Rev 1 Jul 17 9 41111210

Antenna

Sierra Wireless strongly recommends working with an antenna manufacturer

either to develop an antenna adapted to the application, or to adapt an existing

solution to the application.

For information on routing constraints for the RF circuit, see RF Circuit on

page 10.

PCB Specifications for the Application

Board

Sensitive signals (such as audio, UIM, and clocks) should be protected by ground

planes/fills. Routing sensitive signals close to noisy signals could result in noise

being coupled.

Recommended PCB Land Pattern

Refer to AirPrime WPx5/WP76 Series Customer Process Guidelines, available at

http://source.sierrawireless.com.

Routing Constraints

Power Supply

If the following design recommendations are not followed, phase error (peak) and

power loss could occur.

•Since the maximum peak current can reach 2.5 A, Sierra Wireless strongly

recommends having a large width for the layout of the power supply signal (to

avoid voltage loss between the external power supply and VBAT_BB/

VBAT_RF.

Figure 4-1: Power Supply Routing Example

Hardware Integration Guide

Rev 1 Jul 17 10 41111210

Note: Figure 4-1 shows separate traces for VBAT_BB and VBAT_RF. If VBAT_BB and

VBAT_RF share a single power supply, these traces should be connected.

Note: For optimal decoupling, place the capacitors on the underside of the board, directly

under the pins.

•Filtering capacitors (100 nF to 1500 F) are recommended near the module’s

power supply.

•Attention should be paid to the ground trace or the ground plane on the appli-

cation board for the power supply that supplies the module. The ground trace

or ground plane, as well as the VBAT trace, must be able to support current

peaks.

•If the ground trace between the module and the power supply is a copper

plane, make sure it is a solid plane.

•Design routing to make sure total line impedance does not exceed

10 m@217Hz.

Ground Plane Connection

The AirPrime WP7601 module requires a solid, central ground plane (with solder

mask defined pads) located directly under the module. This will:

•Ensure high current signal returns

•Provide heat dissipation under higher operating temperatures

The ground plane should be connected (with vias) to the reference ground layer

of the application board.

UIM Interface

•The length of the tracks between the AirPrime WP7601 and the UIM socket

should be as short as possible. Maximum recommended length is 10cm.

•ESD protection is mandatory on the UIM lines unless there is no physical

access to the UIM.

•The decoupling capacitor(s) should be placed as close as possible to the UIM

card connector for the UIM1_VCC signal.

RF Circuit

The RF signal must be routed on the application board using tracks with a 50

characteristic impedance.

The characteristic impedance depends on the dielectric, the track width and the

ground plane spacing.

It is recommended to use stripline design if the RF path is fairly long (more than

3 cm), since microstrip design is not shielded. Consequently, the RF (transmit)

signal may interfere with neighboring electronic circuits. In the same way, the

neighboring electronics (micro-controllers, etc.) may interfere with the RF

(receive) signal and degrade the reception performance.

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