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NINA-B2 series - System Integration Manual 

UBX-18011096 - R03 

Contents

  

Page 20 of 30 

 

 

 

The suggested paste mask layout for the NINA-B2 series  modules is to follow the copper mask 
layout as described in the NINA-B2 series Data Sheet [2] . 

These are recommendations only and not specifications. The exact mask geometries, distances and 
stencil thicknesses must be adapted to the specific production processes of the customer. 

3.7

 

Thermal guidelines 

The  NINA-B2 series  modules have been successfully tested in -40  °C to +85  °C. A good grounding 
should be observed for temperature relief during high ambient temperature.  

3.8

 

ESD guidelines 

The immunity of devices integrating NINA-B2 modules to Electro-Static Discharge (ESD) is part of 
the Electro-Magnetic Compatibility (EMC) conformity, which is required for products bearing the CE 
marking, compliant with the R&TTE Directive (99/5/EC), the EMC Directive (89/336/EEC) and the 
Low Voltage Directive (73/23/EEC) issued by the Commission of the European Community. 

Compliance with these directives implies conformity to the following European Norms for device 
ESD immunity: ESD testing standard 

CENELEC EN 61000-4-2 and the radio equipment standards 

ETSI EN 301 489-1,  ETSI EN 301 489-7,  ETSI EN 301 489-24,  the  requirements  of which are 
summarized in Table 6. 

The ESD immunity test is performed at the enclosure port, defined by 

ETSI EN 301 489-1  as the 

physical boundary through which the electromagnetic field radiates. If the device implements an 
integral antenna, the enclosure port is seen as all insulating and conductive surfaces housing the 
device. If the device implements a removable antenna, the antenna port can be separated from the 
enclosure port. The antenna port includes the antenna element and its interconnecting cable 
surfaces. 

The applicability of ESD immunity test to the whole device depends on the device classification as 
defined by 

ETSI EN 301 489-1. Applicability of ESD immunity test to the related device ports or the 

related interconnecting cables to auxiliary equipment, depends on the device accessible interfaces 
and manufacturer requirements, as defined by the 

ETSI EN 301 489-1. 

Contact discharges are performed at conductive surfaces, while air discharges are performed at 
insulating surfaces. Indirect contact discharges are performed on the measurement setup 
horizontal and vertical coupling planes as defined in the 

CENELEC EN 61000-4-2. 

For the definition of integral antenna, removable antenna, antenna port, and  device classification, 
refer to the ETSI EN 301 489-1. For the contact and air discharges definitions, refer to CENELEC EN 
61000-4-2. 

Application

 

Category

 

Immunity Level

 

All exposed surfaces of the radio equipment and ancillary 
equipment in a representative configuration 

Indirect Contact Discharge 

±

8 kV 

Table 6: Electro-Magnetic Compatibility ESD immunity requirements as defined by CENELEC EN 61000-4-2, ETSI EN 301 
489-1, ETSI EN 301 489-7, ETSI EN 301 489-24 

NINA-B2 is manufactured taking into account specific standards to minimize the occurrence of ESD 
events; the highly automated process complies with the IEC61340-5-1 (STM5.2-1999 Class M1 
devices) standard. Thus, the designer should implement proper measures to protect from ESD 
events any pin that may be exposed to the end user. 

Compliance with standard protection level specified in the EN61000-4-2  can be achieved by 
including the ESD protections in parallel to the line, close to areas accessible by the end user. 

Содержание NINA-B2 series

Страница 1: ...A B2 modules come with pre flashed application software and support dual mode Bluetooth Bluetooth BR EDR and Bluetooth low energy The module has many important security features embedded including sec...

Страница 2: ...Information Document contains the final product specification This document applies to the following products Product name Type number u blox connectivity software version Hardware version PCN referen...

Страница 3: ...a pin NINA B221 9 1 8 2 Integrated antenna NINA B222 9 1 9 Reserved pins RSVD 9 1 10GND pins 9 2 Software 10 2 1 Flashing the NINA module 10 2 2 Updating the NINA B2 u blox connectivity software 10 3...

Страница 4: ...soldering process 21 4 3 2 Cleaning 22 4 3 3 Other remarks 23 5 Approvals 24 5 1 General requirements 24 5 2 FCC IC End product regulatory compliance 24 5 2 1 NINA B2 series FCC ID and IC certificati...

Страница 5: ...luetooth low energy Serial Port Service all configurable from a host using AT commands NINA B222 comes with an internal antenna while NINA B221 has a pin for use with an external antenna The internal...

Страница 6: ...gain 3 dBi Table 1 NINA B2 series Bluetooth characteristics 1 3 CPU The NINA B2 series has a dual core system with two Harvard Architecture Xtensa LX6 CPUs with maximum 240 MHz internal clock frequenc...

Страница 7: ...quency ringing The use of an LDO linear regulator is convenient for a primary supply with a relatively low voltage where the typical 85 90 efficiency of the switching regulator leads to minimal curren...

Страница 8: ...o set and indicate the system modes The UART can be used as 4 wire UART with hardware flow control and 2 wire UART with only TXD and RXD If the UART is used in 2 wire mode CTS should be connected to t...

Страница 9: ...re often required to retune the antenna to bring the return loss within an acceptable range It is difficult to predict the actual matching values for the antenna in the final form factor Therefore it...

Страница 10: ...livered in a zip file NINA B22X xxx zip Unzip this file before downloading The secure boot is included in the file NINA B2 Secureboot json In the s center software secure boot is supported from versio...

Страница 11: ...UBX 18011096 R03 Contents Page 11 of 30 Figure 2 Software Update using s center For more information about the parameters see the Software update UFWUPD command in u blox Short Range Modules AT Comman...

Страница 12: ...per functionality 3 2 Supply interfaces 3 2 1 Module supply VCC design Good connection of the module s VCC pin with DC supply source is required for correct RF performance The guidelines are summarize...

Страница 13: ...RF transmission line design NINA B221 only RF transmission lines such as the ones from the ANT pad up to the related antenna connector or up to the related internal antenna pad must be designed so tha...

Страница 14: ...its poor thickness stability and thus less control of impedance over the trace length Contact the PCB manufacturer for specific tolerance of controlled impedance traces The transmission lines width an...

Страница 15: ...Integrated antenna excites RF currents on its counterpoise typically the PCB ground plane of the device that becomes part of the antenna its dimension defines the minimum frequency that can be radiat...

Страница 16: ...ct antennas that provide optimal efficiency figure over all the operating frequencies Select antennas that provide appropriate gain figure that is combined antenna directivity and efficiency figure so...

Страница 17: ...ennas themselves Follow the guidelines mentioned below The antenna design process should begin at the start of the whole product design process Self made PCBs and antenna assembly are useful in estima...

Страница 18: ...ke care while handling the EVK NINA B222 Applying force to the module might damage the internal antenna 3 4 Data communication interfaces 3 4 1 Asynchronous serial interface UART design The layout of...

Страница 19: ...gnal skew for differential pairs and length matching of buses Minimize the routing length longer traces will degrade signal performance Ensure that maximum allowable length for high speed busses is no...

Страница 20: ...a the antenna port can be separated from the enclosure port The antenna port includes the antenna element and its interconnecting cable surfaces The applicability of ESD immunity test to the whole dev...

Страница 21: ...tact when handling the PCB must always be between the local GND and PCB GND Before mounting an antenna patch connect ground of the device When handling the RF pin do not come into contact with any cha...

Страница 22: ...down from TL K s 6 General Tto peak s 300 Allowed soldering cycles 1 Table 7 Recommended reflow profile Figure 6 Reflow profile Lower value of TP and slower ramp down rate 2 3 C sec is preferred Afte...

Страница 23: ...s populated with the modules Miniature Wave Selective Solder process is preferred over traditional wave soldering process Hand soldering is not recommended Rework is not recommended Conformal coating...

Страница 24: ...to the u blox FCC ID and IC certification number u blox can support updates to the u blox regulatory authorization if needed For example adding new antennas to the u blox authorization for NINA B2 mo...

Страница 25: ...hange Antenna trace designs deviating from the u blox reference design and new antenna types are added under a Class II Permissive Change Integrators who want to refer to the u blox FCC ID IC certific...

Страница 26: ...ional tests Digital I O tests Measurement and verification of RF characteristics in all supported bands calibration of transmitter power levels modulation and frequency accuracy power levels sensitivi...

Страница 27: ...uality This test can be performed after establishing a connection with an external device A very simple test can be performed by just scanning for a known Bluetooth low energy device and checking the...

Страница 28: ...tic Interference ESD Electro Static Discharge GND Ground IoT Internet of Things ISM Industrial Scientific and Medical radio LED Light Emitting Diode LTE Long Term Evolution MAC Media Access Control MC...

Страница 29: ...u blox documentation and to receive product change notifications register on our homepage www u blox com Revision history Revision Date Name Comments R01 27 Apr 2018 fbro kgom Initial release R02 3 J...

Страница 30: ...Regional Office China Beijing Phone 86 10 68 133 545 E mail info_cn u blox com Support support_cn u blox com Regional Office China Chongqing Phone 86 23 6815 1588 E mail info_cn u blox com Support sup...

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