Anaren Integrated Radio A2541E24x User’s Manual Release Date: 06/24/13
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iii USER’S MANUAL Models A2541E24A and A2541E24C Contents 1. Overview .......................................................................................................................................................... 5 1.1. A2541E24A .................................................................................................................................................5 1.2. A2541E24C ..........................................................................................................
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A2541E24x – User’s Manual Release Date 06/24/13 Page 5 of 31 1. Overview The A2541E24A and A2541E24C are surface mount modules integrating Texas Instruments’ (TI) CC2541 system-on-chip (SoC) transceiver with the CC2590 PA/LNA device for increased range. The A2541E24A has an integral antenna, whereas the A2541E24C 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.
Page 6 of 31 1.3. A2541E24x – User’s Manual Release Date 06/24/13 Features Features: 2.4 GHz IEEE 802.15.4 compliant 2.0 to 3.6 V operation High-Performance and low-power 8051 microcontroller core Multiple power modes to control current consumption 256 kB Programmable Flash 8 kB RAM with retention in all power modes Programmable output power up to +9 dBm 18 General Purpose I/O Pins Excellent receiver sensitivity, -92 dBm average in BLE HGM with <1% PER.
A2541E24x – User’s Manual Release Date 06/24/13 1.4. Page 7 of 31 Theory of Operation The A2541E24A and A2541E24C 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 A2541E24A and A2541E24C, respectively.
Page 8 of 31 A2541E24x – User’s Manual Release Date 06/24/13 CODE/XDATA) with single-cycle access to SFR, DATA, and the main SRAM. It also includes a debug interface and an 18-input extended interrupt unit. o The memory arbiter connects the CPU and DMA controller with the physical memories and all peripherals through the SFR bus. o The 8-BK SRAM maps to the DATA memory space and to parts of the XDATA memory spaces.
A2541E24x – User’s Manual Release Date 06/24/13 Page 9 of 31 Figure 2 The functionality of the A2541E24C, using an external antenna Table 1 Approved Antennas Item Part Number 1 2 3 Integral part of A2541E24A 66089-2406 66089-2430 1.5.
Page 10 of 31 A2541E24x – User’s Manual Release Date 06/24/13 2. Approvals and Usage The A2541E24A and A2541E24C 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 A2541E24A and A2541E24C modules have been tested to comply with FCC CFR47 Part 15 sub-part C “Intentional Radiators” standard.
A2541E24x – User’s Manual Release Date 06/24/13 2.1.1.2. Page 11 of 31 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 31 A2541E24x – User’s Manual Release Date 06/24/13 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.
A2541E24x – User’s Manual Release Date 06/24/13 Page 13 of 31 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-A13022601) 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 31 A2541E24x – User’s Manual Release Date 06/24/13 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.
A2541E24x – User’s Manual Release Date 06/24/13 Page 15 of 31 appropriate, compliance with exposure guidelines for mobile and unlicensed devices can be 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 31 A2541E24x – User’s Manual Release Date 06/24/13 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.
A2541E24x – User’s Manual Release Date 06/24/13 Page 17 of 31 2.2.3. Microwave ovens A typical microwave oven uses a self-oscillating magnetron with a duty cycle below 50%, because the tube is completely off for half of every AC mains cycle (8.33 ms in 60 Hz countries and 10 ms in 50 Hz countries). The frequency of the microwave oven changes cyclically within each AC mains synchronized on period, and is generally not predictable.
Page 18 of 31 2.3. A2541E24x – User’s Manual Release Date 06/24/13 Approved Usage The A2541E24A and A2541E24C 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.
A2541E24x – User’s Manual Release Date 06/24/13 Page 19 of 31 Table 3 Output Power vs. PA Table Value (tolerance +/- 1.5 dB) Power (dBm) PA_Table Value (Hex) 9.5 9.0 8.7 8.5 8.0 7.5 7.0 5.5 4.5 2.5 0.5 -1.5 -3.5 -5.5 -7.5 -9.5 -11.5 -13.5 -15.5 0xEF 0xE1 0xD5 0xD1 0xCF 0xC6 0xC1 0xB1 0xA1 0x91 0x81 0x71 0x61 0x51 0x41 0x31 0x21 0x11 0x01 2.3.2. Europe For Europe, the maximum power is 100mW with a maximum spectral power density of 10mW/MHz.
Page 20 of 31 A2541E24x – User’s Manual Release Date 06/24/13 3. Electrical Characteristics 3.1. Absolute Maximum Ratings Under no circumstances shall the absolute maximum ratings given in Table 5 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.
A2541E24x – User’s Manual Release Date 06/24/13 3.2. Page 21 of 31 Operating Conditions Table 6 Operating conditions Parameter Min Max Unit Supply Voltage (Vdd) 2.0 3.6 V Temperature Range -40 +85 ˚C 3.3. Condition/Note Pin Out The A2541E24A and A2541E24C 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 31 A2541E24x – User’s Manual Release Date 06/24/13 Pin Type Description 1 GND Common Ground Connect to GND 2 DNC 3 GND 4 DNC 5 P2_4/OSC32K_Q1 Digital I/O 6 P2_3/OSC32K_Q2 Digital I/O 7 8 9 10 11 P2_2 P2_1 P2_0 P1_7 P1_6 12 GND 13 SCL 14 GND 15 SDA 16 17 18 19 20 21 NC P1_5 P1_4 LNA_EN PA_EN LNA_GAIN 22 GND 23 24 25 26 27 28 29 30 31 32 P1_0 P0_7 P0_6 P0_5 P0_4 P0_3 P0_2 P0_1 P0_0 RESET_N Digital I/O Digital I/O Digital I/O Digital I/O Digital I/O Common Ground
A2541E24x – User’s Manual Release Date 06/24/13 3.4. Recommended Layout Page 23 of 31 (dimensions in mm) Figure 5 Recommended PCB layout.
Page 24 of 31 A2541E24x – User’s Manual Release Date 06/24/13 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.
A2541E24x – User’s Manual Release Date 06/24/13 4. Mechanical and Process 4.1. Radio Module Details ( dimensions in mm) 4.1.1. A2541E24A Figure 8 A2541E24A dimensions 4.1.2.
Page 26 of 31 4.2. A2541E24x – User’s Manual Release Date 06/24/13 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 A2541E24A00GM and A2541E24C00GM Matrix Tray Packaging Detail (27/Tray) 4.2.2.
A2541E24x – User’s Manual Release Date 06/24/13 4.3. Page 27 of 31 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. DO NOT use waterbased fluxes that require aqueous cleaning after solder.
Page 28 of 31 A2541E24x – User’s Manual Release Date 06/24/13 4.3.2. Automated Mounting Procedure The AIR Radio Module recommended solder reflow profile is based on IPC/JEDEC J-STD-020.
A2541E24x – User’s Manual Release Date 06/24/13 Page 29 of 31
Page 30 of 31 A2541E24x – User’s Manual Release Date 06/24/13 DOCUMENT HISTORY Date 06/20/13 06/24/13 Author Sula Richardson Change Note No.
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.
