Anaren Integrated Radio A20737x User’s Manual Release Date: 09/25/14
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iii USER’S MANUAL Models A20737A and A20737C Contents 1. Overview ..........................................................................................................................................................5 1.1. A20737A .....................................................................................................................................................5 1.2. A20737C ...............................................................................................................
A20737x – User’s Manual Release Date 09/25/14 Page 5 of 30 1. Overview The A20737A and A20737C modules are surface mount 2.4GHz RF transceivers incorporating Bluetooth® SMART technology per the Bluetooth v4.0 core specification (Bluetooth SMART technology is formerly known as Bluetooth Low Energy or BLE). The A20737A has an integral antenna, whereas the A20737C utilizes an external antenna through a U.FL connector (see Table 1).
Page 6 of 30 1.3. A20737x – User’s Manual Release Date 09/25/14 Features Features: Benefits Summary: 2.4 GHz Bluetooth Smart technology 1.7 to 3.6 V operation Integrated ARM Cortex-M3 based microprocessor core 512-Kbit EEPROM for applications Programmable output power control 18 General Purpose I/O Pins Low current consumption (25 mA in RX and, 20mA @ 3 dBm) Excellent receiver sensitivity, -94 dBm average in BLE HGM with <1% PER.
A20737x – User’s Manual Release Date 09/25/14 Page 7 of 30 Figure 1 The functionality of the A20737A, using an internal antenna Figure 2 The functionality of the A20737C, using an external antenna The description of the functional blocks shown in Figure 1 and Figure 2 is given as follows:
Page 8 of 30 A20737x – User’s Manual Release Date 09/25/14 Antenna o The antenna couples energy between the air and the module. The integral antenna and the external monopole antenna, both centered at 2441.75 MHz, provide a near omni-directional antenna pattern with high efficiency such that the application will work in any direction. Note that the end radiation pattern depends not only on the antenna, but also the ground plane, enclosure and installation environment.
A20737x – User’s Manual Release Date 09/25/14 Page 9 of 30 2. Approvals and Usage The A20737A and A20737C have been designed to meet many 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 A20737A and A20737C modules have been tested to comply with FCC CFR47 Part 15 sub-part C “Intentional Radiators” standard as well as Part 15 Sub-part B.
Page 10 of 30 2.1.1.2. A20737x – User’s Manual Release Date 09/25/14 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.
A20737x – User’s Manual Release Date 09/25/14 Page 11 of 30 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.
Page 12 of 30 A20737x – User’s Manual Release Date 09/25/14 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-A14070701) 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.
A20737x – User’s Manual Release Date 09/25/14 Page 13 of 30 thereof). Each model shall be identified by a unique combination of a model number and a certification number, which are assigned as described below in this section. 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.
Page 14 of 30 2.1.2.2. A20737x – User’s Manual Release Date 09/25/14 RF Exposure All transmitters regulated by IC must comply with RF exposure limits as set forth in RSS-102, Issue 4, section 4, “Exposure Limits”. Furthermore RSS-102, Issue 4, Section 2 “Certification Requirements”, provides assistance in determining the specific requirements for compliance.
A20737x – User’s Manual Release Date 09/25/14 Page 15 of 30 The end user is responsible for ensuring compliance with harmonized frequencies and labeling requirements for each country the end device is marketed and sold. For more information see: Radio And Telecommunications Terminal Equipment (R&TTE) http://ec.europa.eu/enterprise/rtte/index_en.htm European Conference of Postal and Telecommunications Administrations (CEPT) http://www.cept.
Page 16 of 30 A20737x – User’s Manual Release Date 09/25/14 unlikely to cause continuous interference in a specific channel and can be overcome by implementing a simple acknowledge/retransmit functionality. 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).
A20737x – User’s Manual Release Date 09/25/14 Page 17 of 30 Table 3 shows available power levels from the device. Users are encouraged to use minimum power required to establish a link, thus minimizing interference and current consumption.
Page 18 of 30 A20737x – User’s Manual Release Date 09/25/14 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.
A20737x – User’s Manual Release Date 09/25/14 3.2. Page 19 of 30 Operating Conditions Table 5 Operating conditions Parameter Min Max Unit Supply Voltage (VDD_IN) 1.7 3.6 V Supply Voltage (VDD_RF) 1.14 1.26 V Temperature Range -30 +85 ˚C 3.3. Condition/Note Pin Out The A20737A and A20737C radios share a common pin-out and foot print, thus enabling the use of the same application PCB layout for both. Below the pin-out is shown: Where applicable: NC = “NO Connection”.
Page 20 of 30 A20737x – User’s Manual Release Date 09/25/14 Table 6 A20737x pin descriptions with references to chip pins Pin Number Pin Name 1, 3, 6, 11, 30 GND 2 DNC 4 NC Pin Type Pin Description & Alternate Functions BCM20737 PIN Common Ground Connect to GND Do Not Connect.
A20737x – User’s Manual Release Date 09/25/14 19 P8/P33 Page 21 of 30 Digital I/O - Floating input after POR State - A/D converter input - P8 + GPIO: P8 + External T/R switch control: ~tx_pd - P33 + GPIO: P33 + SPI_2: MOSI (slave only) + Auxiliary clock output: ACLK1 + Peripheral UART: puart_rx 24 25 20 P32 Digital I/O - Floating input after POR State - GPIO: P32 - A/D converter unit - Peripheral UART: puart_tx - SPI_2: SPI_CS (slave only) - SPI_1: MISO (master only) - Auxiliary clock output: ACL
Page 22 of 30 3.4. A20737x – User’s Manual Release Date 09/25/14 Recommended Layout (dimensions in mm) Figure 5 Recommended PCB footprint.
A20737x – User’s Manual Release Date 09/25/14 Figure 6 Mounting the module in a corner Page 23 of 30 Figure 7 Mounting the module along an edge “No GND” area is optional for A20737C modules. It may still be provided for compatibility with the internal antenna version (A20737A). 3.5.
Page 24 of 30 A20737x – User’s Manual Release Date 09/25/14 4. Mechanical and Process 4.1. Radio Module Details (dimensions in mm) 4.1.1. A20737A Figure 8 A20737A dimensions 4.1.2.
A20737x – User’s Manual Release Date 09/25/14 4.2. Packaging Details Page 25 of 30 (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 A20737AxxGM and A20737CxxGM Matrix Tray Packaging Detail (36/Tray) 4.2.2.
Page 26 of 30 4.3. A20737x – User’s Manual Release Date 09/25/14 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.
A20737x – User’s Manual Release Date 09/25/14 Page 27 of 30 4.3.2. Automated Mounting Procedure The AIR Radio Module recommended solder reflow profile is based on IPC/JEDEC J-STD-020.
Page 28 of 30 A20737x – User’s Manual Release Date 09/25/14
A20737x – User’s Manual Release Date 09/25/14 Page 29 of 30 DOCUMENT HISTORY Date 09/25/14 Author Sula 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.
