Anaren Integrated Radio A2541R24x User’s Manual Release Date: 06/03/13
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iii USER’S MANUAL Models A2541R24A and A2541R24C Contents 1. Overview .......................................................................................................................................................... 5 1.1. A2541R24A .................................................................................................................................................5 1.2. A2541R24C ..........................................................................................................
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A2541R24x – User’s Manual Release Date 06/03/13 Page 5 of 32 1. Overview The A2541R24A and A2541R24C are surface mount transceiver modules. The A2541R24A has an integral antenna, whereas the A2541R24C utilizes an external antenna through a U.FL connector (see Table 1). These modules incorporate a crystal, the required RF matching and filtering for regulatory compliance as well as filtering on all digital lines for noise reduction and sensitivity. They operate in the global non-licensed 2.
Page 6 of 32 1.3. A2541R24x – User’s Manual Release Date 06/03/13 Features Features: 2.4 GHz IEEE 802.15.4 compliant 2.0 to 3.
A2541R24x – User’s Manual Release Date 06/03/13 1.4. Page 7 of 32 Theory of Operation The A2541R24A and A2541R24C modules operate in the global 2.4 GHz ISM/SRD frequency band. They can be used to implement a variety of networks, including point to point, point to multi-point, peer to peer and mesh networks. Figure 1 and Figure 2 show the functionality of A2541R24A and A2541R24C, respectively.
Page 8 of 32 A2541R24x – User’s Manual Release Date 06/03/13 The 8-BK SRAM maps to the DATA memory space and to parts of the XDATA memory spaces. This is an ultralow-power SRAM that retains its contents even when the digital part is powered off. o 256 KB flash block provides in-circuit programmable non-volatile program memory for the device, and maps into the CODE and XDATA memory spaces.
A2541R24x – User’s Manual Release Date 06/03/13 Page 9 of 32 Figure 2 The functionality of the A2541R24C, using an external antenna Table 1 Approved Antennas Item Part Number 1 2 3 Integral part of A2541R24A 66089-2406 66089-2430 1.5.
Page 10 of 32 A2541R24x – User’s Manual Release Date 06/03/13 2. Approvals and Usage The A2541R24A and A2541R24C have been designed to meet most national regulations for worldwide ISM band use. In particular, the radio modules have been certified to the following standards. 2.1. Product Approvals 2.1.1. USA (Federal Communications Commission, FCC) The A2541R24A and A2541R24C modules have been tested to comply with FCC CFR47 Part 15 sub-part C “Intentional Radiators” standard.
A2541R24x – User’s Manual Release Date 06/03/13 2.1.1.2. Page 11 of 32 End User Manual The end user manual should include the following statement: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
Page 12 of 32 A2541R24x – User’s Manual Release Date 06/03/13 From section 3.2 RSS-Gen, Issue 3, December 2010, Modular Approval for Category I Equipment or Category II Equipment: “Modular approval permits the installation of the same module in a host device or multiple host devices without the need to recertify the device. Equipment certification for a modular device may be sought for either Category I equipment or Category II equipment.
A2541R24x – User’s Manual Release Date 06/03/13 Page 13 of 32 In section 7.1.2 Transmitter Antenna, it has been mentioned that the user manuals for transmitters equipped with detachable antennas shall also contain the following notice in a conspicuous location: Notice: This radio transmitter (IC: 8975A-A12062101) has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Page 14 of 32 A2541R24x – User’s Manual Release Date 06/03/13 The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the device’s expected lifetime.
A2541R24x – User’s Manual Release Date 06/03/13 Page 15 of 32 accomplished by the use of warning labels and by providing users with information concerning minimum separation distances from transmitting structures and proper installation of antennas.
Page 16 of 32 A2541R24x – User’s Manual Release Date 06/03/13 European Conference of Postal and Telecommunications Administrations (CEPT) http://www.cept.org/ European Telecommunications Standards Institute (ETSI) http://www.etsi.org/ European Radio Communications Office (ERO) http://www.ero.dk/ 2.2. Potential Interference Sources The radio modules operate in the unlicensed ISM band, in which there are many other applications e.g. WLAN, Bluetooth® and microwave ovens.
A2541R24x – User’s Manual Release Date 06/03/13 Page 17 of 32 2.2.2. Bluetooth® Bluetooth® divides the 2.402-2.480 GHz band into 79 channels, each of which is 1MHz wide. However, since Bluetooth® changes channels rapidly (up to 1600 times a second), it is unlikely to cause continuous interference in a specific channel and can be overcome by implementing a simple acknowledge/retransmit functionality. 2.2.3.
Page 18 of 32 2.3. A2541R24x – User’s Manual Release Date 06/03/13 Approved Usage The A2541R24A and A2541R24C modules have been approved for use in the US, Canada and Europe. The user is encouraged to use minimum power required to establish a link, thus minimizing interference. Changes or modifications to the module and/or operation outside the limits are prohibited and could void the user’s authority to operate the modules. 2.3.1.
A2541R24x – User’s Manual Release Date 06/03/13 Page 19 of 32 Table 3 Output Power vs. PA Table Value (tolerance +/- 1.5 dB) Power (dBm) PA_Table Value [Hex] 1.0 0.0 -1.5 -3.0 -5.0 -7.0 -9.5 -11.0 -13.5 -15.0 -17.0 -19.0 -21.0 -23.0 -25.0 -27.0 0xEF 0xE1 0xD1 0xC1 0xB1 0xA1 0x91 0x81 0x71 0x61 0x51 0x41 0x31 0x21 0x11 0x01 2.3.2. Europe For Europe, the maximum allowed output power is 100mW with a spectral power density limit of 10mW/MHz.
Page 20 of 32 A2541R24x – User’s Manual Release Date 06/03/13 3. Electrical Characteristics 3.1. Absolute Maximum Ratings Under no circumstances shall the absolute maximum ratings given in Table 4 be violated. Stress exceeding one or more of the limiting values may cause permanent damage to the device. Caution! ESD sensitive device. Precaution should be used when handling the device in order to prevent permanent damage.
A2541R24x – User’s Manual Release Date 06/03/13 3.2. Page 21 of 32 Operating Conditions Table 5 Operating conditions Parameter Min Max Unit Supply Voltage (Vdd) 2 3.6 V Temperature Range -40 +85 ˚C 3.3. Condition/Note Pin Out The A2541R24A and A2541R24C radios share a common pin-out and foot print, thus enabling the use of the same application PCB layout for US/Europe and low power (short range) versus higher power (long range). Below the footprint is shown.
Page 22 of 32 A2541R24x – User’s Manual Release Date 06/03/13 Pin Type Description 1 GND Common Ground Connect to GND 2 DNC 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 CC2541 PIN Pin Name TPS62730 PIN Pin Number Table 6 pin-out table, with references to chip pins Do Not Connect.
A2541R24x – User’s Manual Release Date 06/03/13 3.4. Recommended Layout Page 23 of 32 (dimensions in mm) Figure 5 Recommended PCB layout.
Page 24 of 32 A2541R24x – User’s Manual Release Date 06/03/13 Figure 6 Mounting the module in a corner 3.5. Figure 7 Mounting the module along an edge Power Supply Considerations Noise on the power supply line reduces the sensitivity of a receiver and can modulate onto a transmitters signal, both of which causes a degradation of link quality and hence a reduction in range.
A2541R24x – User’s Manual Release Date 06/03/13 Page 25 of 32 4. Mechanical and Process 4.1. Radio Module Details (dimensions in mm) 4.1.1. A2541R24A Figure 8 A2541R24A dimensions 4.1.2.
Page 26 of 32 4.2. A2541R24x – User’s Manual Release Date 06/03/13 Packaging Details (dimensions in mm) AIR modules are available in Matrix Tray and Tape & Reel packaging for high-volume assembly. Details of packaging provided below: 4.2.1. Matrix Tray Packaging Figure 10 A2541R24A00GM and A2541R24C00GM Matrix Tray Packaging Detail (27/Tray) 4.2.2.
A2541R24x – User’s Manual Release Date 06/03/13 Page 27 of 32 Figure 11 A2541R24A00GR and A2541R24C00GR Tape-Reel Packaging Detail (500/Reel) 4.3. Soldering AIR Modules may be mounted either manually (for prototyping or low volume production), or automatically for high-volume production. A no-clean tin/silver/copper (SAC) solder is recommended, however lead based no-clean pastes may also be used. CAUTION: AIR Modules are designed for no-clean fluxes only.
Page 28 of 32 A2541R24x – User’s Manual Release Date 06/03/13 4.3.2. Automated Mounting Procedure The AIR Radio Module recommended solder reflow profile is based on IPC/JEDEC J-STD-020.
A2541R24x – User’s Manual Release Date 06/03/13 Page 29 of 32
Page 30 of 32 A2541R24x – User’s Manual Release Date 06/03/13 DOCUMENT HISTORY Date 05/16/13 05/19/13 05/22/13 06/03/13 Author Sula Richardson Richardson Richardson Change Note No.
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Attach distributor contact information here If you have additional questions, need samples, or would like a quote – please email the AIR team at AIR@anaren.com . For a full list of our franchised distributors, please visit our website: http://www.anaren.com/air/ Anaren Microwave, Inc. 6635 Kirkville Road East Syracuse, NY 13057 Tel: +1 315 432 8909 +1 800 411 6596 Fax: +1 315 432 8970 Anaren Microwave (Europe), Inc.
