DynaStream Innovations 1823 LOW POWER TRANSMITTER (2400-2483.5 MHz) User Manual UserMan 1823

DynaStream Innovations Inc. LOW POWER TRANSMITTER (2400-2483.5 MHz) UserMan 1823

Users Manual

D00001445 Rev 0.7 C7 RF Transceiver Module FEATURES  78 selectable RF channels (2403 to 2480 MHz)  20mm x 20mm drop-in module with F antenna  Ultra low power operation  Simple sync/async serial interface  Programmable output power up to +4 dBm  Excellent receiver sensitivity -86 dBm  1 Mbps RF data rate, GFSK modulation  Up to 8 ANT channels  Broadcast, acknowledged, or burst data transmissions  Built-in ANT-FS (file share) with AES-128 encryption  ANT channel combined message rate up to 200Hz (8byte data payload)  Minimum message rate per ANT channel 0.5Hz  Burst transfer rate up to 20Kbps (true data throughput)  Up to 3 public, managed and/or private network keys  High resolution proximity pairing and RSSI reading  2 V to 3.6V supply voltage range  -40°C to +85°C operating temperature  Pin compatible with ANT AP2, AT3 and AP1 modules   Radio regulatory approval for major markets (pending)   RoHS compliant   (Picture is to be updated)  APPLICATIONS Network controllers and data hubs.  Complex sensors in health and fitness FAMILY MEMBERS ANTC782M5IB – 8 ANT channels; Molex Connector ANTC782M4IB – 8 channels, surface mount ANT NETWORK CONFIGURATIONS1122113104 95 86 7MPEER TO PEERSTARPRACTICAL MESHSHARED BI-DIRECTIONAL 8 7 691011121314 15 1654321SCANNING MODEANT-FS (Secure Authenticated)1122113104 9?86 7MAD-HOC AUTO SHARED1122113104 95 86 7MSHARED UNI-DIRECTIONALnBidirectionalAcknowledgedBROADCASTSHARED CLUSTERSensorHubRelay
Page 2 of 20  ANT C7 RF Transceiver Module                     thisisant.com Table of Contents 1.ANT C7 Module .......................................................................................................................................... 51.1Module version ............................................................................................................................ 51.2Interface ..................................................................................................................................... 61.3Application MCU connection .......................................................................................................... 71.3.1Async Mode ................................................................................................................... 71.3.2Byte Sync Mode ............................................................................................................. 81.3.3Bit Sync Mode ................................................................................................................ 91.3.4External Memory Connection ........................................................................................ 101.4Mounting Guideline .................................................................................................................... 101.5Reflow Guideline ........................................................................................................................ 101.6Pick-n-Place ............................................................................................................................... 102.Regulatory Approval (In process. Not completed) ................................................................................ 112.1United States ............................................................................................................................. 112.2Industry Canada Compliance ...................................................................................................... 112.3CE Declaration of Conformity ...................................................................................................... 122.4Australia & New Zealand ............................................................................................................ 123.Electrical Specifications .......................................................................................................................... 133.1Absolute Maximum Ratings (1) ..................................................................................................... 133.2Recommended Operating Conditions ........................................................................................... 133.3ELECTRICAL CHARACTERISTICS ................................................................................................. 133.4RF Characteristics ...................................................................................................................... 133.5APPLICATION SPECIFIC POWER USAGE ...................................................................................... 153.6Calculating the Average Current Consumption and Battery Life ...................................................... 164.Mechanical Drawings  ............................................................................................................................. 185.Technical Support ................................................................................................................................... 205.1Public Technical References ........................................................................................................ 205.2ANT Forum ................................................................................................................................ 205.3ANT Social Networks .................................................................................................................. 20
ANT C7 RF Transceiver Module  Page 3 of 20                     thisisant.com Notices and Restricted Use Information Information contained in this document is provided only for your ("Customer" or “you”) convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. Dynastream Innovations Inc. ("DYNASTREAM") makes no representations or warranties of any kind whether express or implied, written or oral, statutory or otherwise, related to the information, including but not limited to its condition, quality, performance, merchantability or fitness for purpose. DYNASTREAM disclaims all liability arising from this information and its use. DYNASTEAM does not assume any responsibility for the use of the described ANT RF module (“the Module(s)”). Dynastream makes no representation with respect to the adequacy of the module in low-power wireless data communications applications or systems. Any Products using the Module must be designed so that a loss of communications due to radio interference or otherwise will not endanger either people or property, and will not cause the loss of valuable data. DYNASTREAM assumes no liability for the performance of products which are designed or created using the Modules.  The Modules are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Module could create a situation where personal injury or death may occur. If you use the Modules for such unintended and unauthorized applications, you do so at your own risk and you shall indemnify and hold DYNASTREAM and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that DYNASTREAM was negligent regarding the design or manufacture of the Product. The information disclosed herein is the exclusive property of DYNASTREAM, and is not to be reproduced and/or distributed without the written consent of DYNASTREAM. No part of this publication may be reproduced or transmitted in any form or by any means including electronic storage, reproduction, execution or transmission without the prior written consent of DYNASTREAM. The recipient of this document by its retention and use agrees to respect the security status of the information contained herein. DYNASTREAM believes the information contained herein is correct and accurate at the time of its release. However, the information contained in this document is subject to change without notice and should not be construed as a commitment by DYNASTREAM unless such commitment is expressly given in a covering document. ©2011 Dynastream Innovations Inc. All Rights Reserved. ANT is a registered trade mark of Dynastream Innovations Inc.
Page 4 of 20  ANT C7 RF Transceiver Module                     thisisant.com ANT™ Overview ANT™ is a practical wireless sensor network protocol running on 2.4 GHz ISM band. Designed for ultra low power, ease of use, efficiency and scalability, ANT easily handles peer-to-peer, star, tree and practical mesh topologies. ANT provides reliable data communications, flexible and adaptive network operation and cross-talk immunity. ANT’s protocol stack is extremely compact, requiring minimal microcontroller resources and considerably reducing system costs. ANT provides carefree handling of the Physical, Network, and Transport OSI layers. In addition, it incorporates key low-level security features that form the foundation for user-defined, sophisticated, network-security implementations. ANT ensures adequate user control while considerably lightening computational burden in providing a simple yet effective wireless networking solution.  ANT supports public, managed and private network architectures with 232 uniquely addressable devices possible, ensuring that each device can be uniquely identified from each other in the same network.  ANT is proven with an installed base of over four million nodes in ultra low power sensor network applications in sport, fitness, home and industrial automation. The ANT solutions are available in chips, chipsets and modules to suit a wide variety of application needs.  The complete description of ANT message protocol is found in the document “ANT Message Protocol and Usage”. The serial interface details are provided in the document “Interfacing with ANT General Purpose Chipsets and Modules”. Both documents are available on www.thisisant.com. ANT+ and ANT+ Alliance  ANT+ is the open application layer on the top of the ANT stack. It standardizes communications and facilitates interoperability between a wide array of personal sports, wellness and lifestyle monitoring devices. ANT+ defines device profiles that specify access, data formats, and channel parameters. The ANT+ Alliance is comprised of companies who have adopted the ANT+ promise of interoperability. The Alliance ensures standardized communication through optimized brand value and partnerships with other top tier companies and products.   Application / PresentationLayersHigher Level SecurityNetwork / Transport &Low Level SecurityData Link LayerPhysical Layer }Implementedby ANT}User Defined
ANT C7 RF Transceiver Module  Page 5 of 20                     thisisant.com 1. ANT C7 Module The ANT C7 module is a drop-in module using CC2571, an ANT network processor from Texas Instruments. The chip is able to support up to 8 independent ANT channels and for the first time offers the following features embedded:  ANT File Share (ANT-FS)   AES-128 data encryption   Maximum +4dBm transmission power  High resolution RSSI reading  An F PCB antenna being integrated on the small-sized 20mm by 20mm board, the module has been certified to comply with radio regulation or standards covering global markets include North America, Europe, Australia and New Zealand.   The ANT C7 module eases the burden for application and system developers from extensive RF design and regulatory compliance testing, allowing quicker time to market. The module is ideal to build control or hub nodes of a wireless sensor network.  Incorporated in C782MxIB module product family are several new generation ANT core stack enhancements:  Background scanning  Continuous scanning mode  High density node support  Improved channel search  Channel ID management  Improved transmission power control  Frequency agility  Proximity acquisition  C782MxIB module is good for chip evaluation of both CC2570 and CC2571 from Texas Instruments.  C7 modules are currently available in the following varieties.   Module  ANT chip Used  Description  Packaging Option ANTC782M4IB  CC2571  Surface mountable, 8 ANT channels,  20x20mm, industrial temperature range Tray: 20 modules on a tray Reel: 500 modules taped on a 13” reel  ANTC782M5IB  CC2571  With Molex connector, 8 ANT channels,  20x20mm, industrial temperature range Tray: 20 modules on a tray   1.1 Module version C782MxIB module revision is identified by the last character as highlighted of a 6 character tracking code on the product sticker.
Page 6 of 20  ANT C7 RF Transceiver Module                     thisisant.com 1.2 Interface  The module may be connected to the user’s host controller using the 17 pin-out assignment (surface mount) style or the 20-pin Molex header connection style provided below: Surface Mount Pin  Molex Header Pin  Pin Name  Async Mode Sync Mode Description 1  6  TEST TEST (Tie to GND) TEST (Tie to GND)  Tie to Ground 2  10  RST  RST  RST  Reset the device 3  1        Power supply source 4  19  GND  GND  GND  Power supply ground 5  8  NC  NC  NC  No connection 6  17  SUSPEND/SRDY SUSPEND  SRDY  Async -> Suspend control Sync -> Serial port ready 7  15  SLEEP/ MRDY    SLEEP  MRDY    Async -> Sleep mode enable Sync -> Message ready indication 8  13  NC  NC  NC  No connection 9  11  PORTSEL  PORTSEL (Tie to GND) PORTSEL (Tie to ) Asynchronous or synchronous port select 10  7  BR2/SCLK  BR2  SCLK  Async -> Baud rate selection Sync -> Clock output signal 11  4  TXD0/SOUT  TXD0  SOUT  Async -> transmit data signal Sync -> Data output 12 3 RXD0/SIN  RXD0  SIN  Async -> Receive data signal Sync -> Data input 13  5  BR1/SFLOW  BR1  SFLOW Async -> Baud rate selection Sync -> Bit or byte flow control select 14  9  BR3  BR3  Tie to GND  Async -> Baud rate selection Sync - > Not used, tie to ground 15  14  RESERVERD2  Tie to GND  Tie to GND  Reserved Pin, Tie to ground 16  12  RESERVERD1  Tie to GND  Tie to GND  Reserved Pin, Tie to ground 17  2  RTS/SEN  RTS  SEN  Async -> Request to send Sync -> Serial enable signal  16,18,20  NC  NC  NC  No connection  The baud rate of the asynchronous communication is controlled by the speed select signals BR1, BR2 and BR3. Please refer to the table below. BR3 BR2 BR1 Baud Rate 0  0  0  4800 1  0  1  9600 0  1  0  19200 0  0  1  38400 0  1  1  50000 1  1  1  57600
ANT C7 RF Transceiver Module  Page 7 of 20                     thisisant.com 1.3 Application MCU connection Please refer to “Interfacing with ANT General Purpose Chipsets and Modules” and “CC2571 Datasheet”. The following sample designs show the proper electrical connectivity of an ANT C7 module to an application microcontroller, using TI MSP430F1232 as example. 1.3.1 Async Mode   Notes:  Module RXD and TXD connected directly to hardware USART of microcontroller.  Switches on baud rate selection pins (BR1, BR2 and BR3) are for ease of use only. They can be connected directly to the logic level of interest.  RTS can be connected to an interrupt pin for convenience in some applications. (Interrupt pins located on Port 1&2 on the MSP430F1232)
Page 8 of 20  ANT C7 RF Transceiver Module                     thisisant.com 1.3.2 Byte Sync Mode   Notes:  Module SOUT, SIN, and SCLK connected directly to hardware USART of microcontroller.  SEN  needs to be on an interrupt capable I/O pin on the microcontroller.  (Interrupt pins located on Port 1&2 on the MSP430F1232)
ANT C7 RF Transceiver Module  Page 9 of 20                     thisisant.com 1.3.3 Bit Sync Mode    Notes:  All interface signals are connected directly to I/O pins on the microcontroller.  SCLK and  SEN  need to be on an interrupt capable I/O pin on the microcontroller. (Interrupt pins located on Port 1&2 on the MSP430F1232)
Page 10 of 20  ANT C7 RF Transceiver Module                     thisisant.com 1.3.4 External Memory Connection The ANTC782 has ANT-FS Client functionality embedded directly on the module This includes the over the air ANT-FS protocol extension and the required file system utilities to manage stored data in non-volatile storage. This allows the user to connect an EEPROM directly to the ANTC782 module. Raw files can be sent and managed by the ANTC782 and downloaded over ANT-FS as desired. The diagram below depicts how to connect an external EEPROM to the ANTC782. The connection is SPI. Please note that only EEPROM (not flash) is support.  The file system and ANT-FS protocol are managed by using an extended version of the ANT/Host serial protocol. For complete details on how to use this protocol please consult the ANT document “FS_ANTFS Serial Message”. The extended Host/ANT interface uses a 2 byte message id to identify FS and ANT-FS specific messages. The packet structure is detailed below.  1.4 Mounting Guideline Refer to the recommended footprint drawing in section 4. (the drawing is to be added) To connect to M5IB type of the C7 module, the mating socket is Molex 52991-0208. 1.5 Reflow Guideline ANTC7M4IB module is rated at moisture sensitive level 3 (MSL=3). To handle and Use these modules, please follow the standard IPC/JEDEC J-STD-033B.1, “Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices”.  To reflow, it is recommended that the peak solder joint/pad temperatures NOT exceeding 240ºC. If possible, pre-heat the assembly within the oven profile for ~30 seconds at ~150 ºC. Follow the solder paste manufacturer’s recommendations, especially regarding temperature ramp rate and the time above liquidus. 1.6 Pick-n-Place ANTC7M4IB module has the package option of 500 modules on a JEDEC standard 13” reel to facilitate machine pick and place. Please refer to section 4 for tape and reel dimensions (the drawing is to be added).
ANT C7 RF Transceiver Module  Page 11 of 20                     thisisant.com 2. Regulatory Approval (In process. Not completed) The ANT C7 module has received regulatory approvals in the United States (FCC), Canada (IC), Europe (ETSI), Australia and New Zealand. Such approvals allow the user to place the module inside a finished product and, in usual case, not require regulatory testing for an intentional radiator, provided no changes or modifications are made to the module circuitry. This does not preclude the possibility that some other form of authorization or testing may be required for the finished product. Changes or modifications could void the user’s authority to operate the equipment. The end user must comply with all of the instructions provided by the Grantee, which indicate installation and/or operating conditions necessary for compliance. 2.1 United States The ANT C7 module 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.  This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.  However, there is no guarantee that interference will not occur in a particular installation.  If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. The C7 module complies with Part 15 of the FCC Rules.  Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.. The C7 module does not contain any user-serviceable parts. Unauthorized repairs or modifications could result in permanent damage to the equipment, and void your warranty and your authority to operate this device under Part 15 regulations. The C7 module is labelled with its own FCC ID, O6R1823 (note: First Character is the letter O, not the # 0.) If the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: O6R1823” or “Contains FCC ID: O6R1823”. Any similar wording that expresses the same meaning may be used. 2.2 Industry Canada Compliance This device complies with Industry Canada licence-exempt RSS standard(s).  Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. (Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.  L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.) To comply with Industry Canada regulations, it is required that product containing the C7 module display a label referring to the enclosed module.  This exterior label can use wording similar to the following: “Contains IC:  3797A-1823”
Page 12 of 20  ANT C7 RF Transceiver Module                     thisisant.com This information shall be affixed in such a manner as not to be removable except by destruction or defacement. The size of the lettering shall be legible without the aid of magnification but is not required to be larger than 8-point font size. If the device is too small to meet this condition, the information can be included in the user manual upon agreement with Industry Canada. 2.3 CE Declaration of Conformity The C7 module is declared to be in conformance with the essential requirements and other relevant provisions of Directive 73/23/EEC and 1999/5/EC, as a low-powered unlicensed transmitter:  EN 60950-1:2006 Safety of Information Technology Equipment  EN 300 440-2 v1.1.1 Electromagnetic compatibility and Radio spectrum Matters (ERM); Short range devices 2.4 Australia & New Zealand The C7 module has been tested and found to comply with AS/NZS 4268:2003, Radio equipment and systems – Short range devices. The ACMA/MED supplier code number is N20233
ANT C7 RF Transceiver Module  Page 13 of 20                     thisisant.com 3.  Electrical Specifications  3.1 Absolute Maximum Ratings (1) PARAMETER  TEST CONDITIONS  Min Max  Unit Supply voltage  All supply pins must have the same voltage  -0.3  3.9  V Voltage on any digital pin   -0.3 VDD+0.3, ≤ 3.9  V Input RF level    10  dBm Storage temperature range  -40  85  °C ESD All pads, according to human-body model, JEDEC STD 22, method A114  2  kV According to charged-device model, JEDEC STD 22, method C101  500  V (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 3.2 Recommended Operating Conditions Over operating free-air temperature range (unless otherwise noted) PARAMETER  Min Max Unit Operating ambient temperature range, TA-40  +85  °C Operating supply voltage  2.0  3.6  V  3.3 ELECTRICAL CHARACTERISTICS Measured with TA = 25°C and VCC = 3 V PARAMETER  TEST CONDITIONS  Min  Typ  Max  Unit I – Current consumption Peak RX current consumption   23.7   mA Peak TX current consumption, -6 dBm output power   25.9   mA Peak TX current consumption, 0 dBm output power   28.8   mA Peak TX current consumption, +4 dBm output power  34.3   mA Power-down current, 32 kHz oscillator active   1.0   µA Power-down current, 32 kHz oscillator disabled   0.5   µA  3.4 RF Characteristics Measured with TA = 25°C and VCC = 3 V PARAMETER  TEST CONDITIONS  Min  Typ Max  Unit RF frequency range  Programmable in 1 MHz steps 2400  2495  MHz Data rate and modulation format 1 Mbps, GFSK, 160 kHz deviation
Page 14 of 20  ANT C7 RF Transceiver Module                     thisisant.com ReceiveSection1 Mbps, GFSK, 160-kHz deviation. Measured TA = 25°C, VCC= 3 V, and fC = 2440 MHz, unless otherwise noted. PARAMETER  TEST CONDITIONS  Min  Typ  Max Unit Receiver sensitivity  0.1% PER   -86   dBm Saturation      10   dBm Co-channel rejection      -9   dB Adjacent-channel rejection  ± 2 MHz   23   dB Alternate-channel rejection  ± 4 MHz   39   dB Frequency error tolerance (1) Including both initial tolerance and drift  -150   150  kHz Symbol rate error tolerance (2)  -50    +50  ppm Spurious emission. Only largest spurious emission stated within each band. Conducted measurement with a 50 Ω single-ended load.  -70   dBm (1) Difference between center frequency of the received RF signal and local oscillator frequency. (2) Difference between incoming symbol rate and the internally generated symbol rate TransmitSectionMeasured with TA = 25°C, VCC = 3 V, and FC = 2440 MHz unless otherwise noted. PARAMETER  TEST CONDITIONS  Min  Typ  Max Unit Output power, maximum setting  Conducted measurement delivered to a single-ended 50 Ω load through a balun using maximum recommended output power setting. 4   dBm Output power, minimum setting  Conducted measurement delivered to a single-ended 50 Ω load through a balun using minimum recommended output power setting. -21   dBm Programmable output power range  Delivered to a single-ended 50 Ω load through a balun.  25   dB Spurious emissions, conducted  Conducted measurement with a 50-Ω single-ended load. Complies with EN 300 328, EN 300 440 class 2, FCC CFR47, Part 15 and ARIB STD-T-66. (1) -45   DBm   Average EIRP, Maximum setting Radiated measurement with the module mated with ANTUIF(1) board in an anechoic chamber at 2403 MHz. -3.5   dBm (1) ANT USB Interface board is provided in the ANTC7EK1 development kit
ANT C7 RF Transceiver Module  Page 15 of 20                     thisisant.com 3.5 APPLICATION SPECIFIC POWER USAGE StateSpecificAverageCurrentThe table below lists the average current consumed while ANT is in specific states where a channel is not actively transmitting or receiving message.  Measured with TA = 25°C and VCC = 3 V Symbol  Description  Value Units Idle  No active channels and no serial communication  0.91  µA Suspend  SUSPEND activated in asynchronous serial mode 0.91  µA Search  Active search on open channel  3.8  mA  The table below lists the average current per message as a function of the serial interface and message type. The message types are: AverageCurrentperMessageAll current values in µA. Measured with TA = 25°C and VCC = 3 V. Output power set at 0dBm  Average Current Per Message Transmit Broadcast(1)  Receive Broadcast(2)  Transmit Acknowledged(3)  Receive Acknowledged(4)  Transmit-only Broadcast(5) ISync_Byte  49  31  70  42  27 ISync_Bit  130  94  146  107  127 IAsync_57600  55  34  73  44  37 IAsync_50000 57  38  81  51  39 IAsync_38400 59  41  84  54  44 IAsync_19200 75  55  95  64  66 IAsync_9600 116  84  134  97  107 IAsync_4800 119  141  222  149  189 (1)Transmit Broadcast – Broadcast message transmitted over bi-directional master channel (2)Receive Broadcast – Broadcast message received by slave channel (3)Transmit Acknowledged – Acknowledged message transmitted over bi-directional master channel (4)Receive Acknowledged – Acknowledged message received by slave channel (5)Transmit-only Broadcast – Broadcast message transmitted by tx-only master channel
Page 16 of 20  ANT C7 RF Transceiver Module                     thisisant.com While these current values include the contribution of the radio and the serial interface they do not include the base (idle) current. To calculate the average current consumption of for a specific message rate please see the sample calculation below. AverageBurstCurrentFor practical purposes power consumption in burst mode is reported as an average current when bursting at a specific bit rate and using a specific serial interface. Please note that the bit rate of the burst is a function of the serial communication. The table below lists the continuous average current consumption while bursting. Measured with TA = 25°C and VCC = 3 V. Output power set at 0dBm Symbol  Description  Average Current  Units Iburst_20kbps_byte  Continuous bursting at 20kbps in byte synch mode  9.0  mA Iburst_7.5kbps_bit Continuous bursting at 7.5kbps in bit synch mode  8.2  mA Iburst_20kbps_57600_async Continuous bursting at 20kbps in 57600 baud async mode  8.7  mA Iburst_20kbps_50000_async Continuous bursting at 20kbps in 50000 baud async mode  8.4  mA Iburst_13.8kbps_38400_async Continuous bursting at 13.8kbps in 38400 baud async mode  7.9  mA Iburst_8.4kbps_19200_async Continuous bursting at 8.4kbps in 19200 baud async mode  7.0  mA   3.6 Calculating the Average Current Consumption and Battery Life The average current for a particular application will be a function of the message period, type and serial interface. By using the values listed in the tables above, the average current can be calculated using the following formula: IAVE = (IMSG X RMSG) + IIDLE  where: IAVE – Average current consumption. IMSG – Current per message IIDLE  – Base or idle current For example, given an ANT node that transmits broadcast data over a bi-directional channel at 0.5Hz using a byte synchronous serial interface, the continuous average current can be calculated as follows: IAVE = (49 X 0.5) + 0.91 = 25.41µA To calculate the expected battery life of a system, the battery capacity and usage model must also be considered. The following formula can be used (please note that this considers the current consumed by the ANT part of the system only):  TBAT CBAT · TOperation CycleTActive· IAveTIdle·IIdle
ANT C7 RF Transceiver Module  Page 17 of 20                     thisisant.com  where:  TBAT – Expected battery life of the system CBAT – Battery capacity TOperation_Cycle  – Operation cycle over which usage is calculated TActive  – Active time in transmit mode IAve  – Average current consumption in active mode TIdle  – Time in non-active mode (off) IIdle  – Average current in idle mode For example, for a system using a CR2032 coin cell batter transmitting at 0.5Hz broadcast for 1 hour per day, the battery life of the system can be calculated as follows:  TBAT 220mAh· 24h1h· 25.41μA23h·0.91μA 12.7 years Please note that the above example assumes that 100% of the battery capacity can be dedicated to the ANT portion of the system. An online power consumption estimator is provided at http://www.thisisant.com/calculator
Page 18 of 20  ANT C7 RF Transceiver Module                     thisisant.com 4. Mechanical Drawings
ANT C7 RF Transceiver Module  Page 19 of 20                     thisisant.com
Page 20 of 20  ANT C7 RF Transceiver Module                     thisisant.com 5. Technical Support The C7 module takes the reference design of CC2571 from Texas Instruments. Users can seek technical support, esp. about hardware, from Texas Instruments, www.ti.com. Users can also seek application support from Dynastream Innovations, www.thisisant.com. 5.1 Public Technical References Documents: 1. CC2570/CC2571 Datasheet, Texas Instruments 2. ANT Message Protocol and Usage, Dynastream Innovations 3. Integrated ANT-FS Interface Control Document 4. Interfacing with ANT General Purpose Chipsets and Modules, Dynastream Innovations  The above documents are available at www.thisisant.com or www.ti.com. 5.2 ANT Forum Users are encouraged to participate in the ANT Forum for any engineering discussions. The Forum is moderated by the application engineering team of Dynastream Innovations. The ANT Forum is free to use and can be accessed at www.thisisant.com/antforum. 5.3 ANT Social Networks ANT is on the following social networks, YouTube: http://www.youtube.com/user/ANTAlliance Twitter: http://twitter.com/ANTPlus LinkedIn: http://www.linkedin.com/groups?gid=1379137

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