Low Power RF & Wireless Connectivity

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Low Power RF & Wireless Connectivity

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  • Wiki Page: DN508 Frequency Scanning using CC430Fx, CC110x, and CC111xFx

    Glenn B
    The purpose of this design note is to show the necessary steps to successfully scan through a frequency band covering n numbers of channels, and find the strongest signal in the band. http://www.ti.com/lit/swra315
    on Feb 24, 2012

  • Wiki Page: DN507 FEC Decoding

    Glenn B
    The CC1100, CC1100E, CC1101, CC1110Fx, CC1111Fx, CC1150, CC2500, CC2510Fx, CC2511Fx, and CC2550 all implement FEC encoding and decoding in HW. The purpose of this design note is to describe how one can implement the same FEC decoding in SW. This is in particular very important for the CC430Fx device...
    on Feb 24, 2012

  • Wiki Page: DN506 GDO Pin Usage

    Glenn B
    CC1100, CC1101, and CC2500 have three digital output pins, GDO0, GDO1, and GDO2, which are general control pins configured using IOCFG0.GDO0_CFG, IOCFG1.GDO1_CFG, and IOCFG2.GDO2_CFG respectively. There are several different signals that can be monitored on the GDO pins and hence be useful for the MCU...
    on Feb 24, 2012

  • Wiki Page: DN505 RSSI Interpretation and Timing

    Glenn B
    The Received Signal Strength Indicator is a measure of the RF power input to the transceiver. The RSSI value is based on the gain setting in the RX chain and the measured signal level in the channel. In RX mode, the RSSI value can be read continuously from the RSSI status register until the demodulator...
    on Feb 24, 2012

  • Wiki Page: DN504 FEC Implementation

    Glenn B
    This document gives an overview of the FEC implementation in the CC1100, CC1101, CC1110, CC1111, CC1150, CC2500, CC2510, CC2511, and CC2550. http://www.ti.com/lit/swra113
    on Feb 24, 2012

  • Wiki Page: DN503 SPI Access

    Glenn B
    The purpose of this design note is to show how the SPI interface must be configured to be able to communicate with the CC1100/CC1101/CC1150/CC2500/CC2550. It also shows how the status bytes should be interpreted, how SW reset is done over the SPI interface, in addition to describing the different SPI...
    on Feb 24, 2012

  • Wiki Page: DN502 CRC Implementation

    Glenn B
    This document gives an overview of the CRC implementation for the CC1100, CC1101, CC1110, CC1111, CC1150, CC2500, CC2510, CC2511, and CC2550. http://www.ti.com/lit/swra111
    on Feb 24, 2012

  • Wiki Page: DN501 PATABLE Access

    Glenn B
    The CC1100/CC1101/CC1150/CC2500/CC2500 all have an eight bytes long PATABLE used for selecting PA power control settings. This design note will describe the different ways the PATABLE can be accessed and how the PATABLE for CC1150 and CC2550 is slightly different than it is for the CC1100, CC1101, and...
    on Feb 24, 2012

  • Wiki Page: DN500 Packet Transmission Basics

    Glenn B
    The CC1100/CC1101/CC1150/CC2500/CC2500 all have extensive built-in packet handling support in hardware. This is to make it easier to implement packet oriented radio protocols in firmware. However, it can sometimes be difficult to know what features to use for a specific application. This design note...
    on Feb 24, 2012

  • Wiki Page: DN400 Interfacing CC1100 - CC2500 to the MSP430

    Glenn B
    The purpose of this design note is to show how to interface the CC1100 /CC2500 EM with the MSP430F1xx/41x family. An example shows the interconnection between the CC1100/CC2500 transceiver and the MSP430F169. The simple protocol is adapted from the TI software libraries. The software handles the transceiver...
    on Feb 24, 2012

  • Wiki Page: DN300 SmartRF04EB Troubleshooting

    Glenn B
    This design note describes troubleshooting guidelines to solve problems related to communication with the SmartRF®04EB. A list of checkpoints presents questions that are normally asked when providing support for SmartRF®04EB. http://www.ti.com/lit/swra105
    on Feb 24, 2012

  • Wiki Page: DN111 Current Consumption for a Polling Receiver

    Glenn B
    The purpose of this design note is to show how to optimize the current consumption for a polling receiver based on some of the digital features of the CC1100, CC1101 and CC2500, such as WOR and RSSI. The design note will also show how a polling receiver can be implemented using the CC1110/CC1111Fx...
    on Feb 24, 2012

  • Wiki Page: DN033 Mitsubishi Ceramic Antenna for 868 MHz, 915 MHz & 955 MHz

    Glenn B
    This document describes an antenna design that can be used with all transceivers and transmitters from Texas Instruments which are capable of operating in the sub 1 GHz bands. The Mitsubishi part number is AMD1103-ST01. http://www.ti.com/lit/swra307
    on Feb 24, 2012

  • Wiki Page: DN032 Options for Cost Optimized CC11xx Matching

    Glenn B
    The CC1101EM 868-915 MHz reference design uses Murata LQW15A wire wound inductors. This design note gives measurement results of maximum output power, harmonics emission, and TX current consumption using wire wound inductors from 6 different vendors. The inductors tested were: • Murata LQW15A [3...
    on Feb 24, 2012

  • Wiki Page: DN025 Johanson Technology Matched Balun Filter optimized for CC1101 868/915 MHz

    Glenn B
    This document describes a matched chip balun filter that has been specifically designed for the CC11xx family of ICs operating in the 868 and 915 MHz ISM bands.With the Johanson Technology (JTI) Matched Balun Filter component; the component count is significantly reduced whilst still obtaining the high...
    on Feb 16, 2012

  • Wiki Page: DN024 868 MHz and 915 MHz Meandering Monopole PCB Antenna

    Glenn B
    This document describes a PCB antenna designed for operation in the 868 MHz and 915 MHz ISM bands. http://www.ti.com/lit/swra227
    on Feb 16, 2012

  • Wiki Page: DN023 868 MHz and 915 MHz PCB Inverted F Antenna

    Glenn B
    This document describes a PCB antenna designed for operation in the 868 MHz and 915 MHz ISM bands. http://www.ti.com/lit/swra228
    on Feb 16, 2012

  • Wiki Page: DN022 CC11xx OOK/ASK Register Settings

    Glenn B
    This design note provides guidelines for finding optimum register settings for OOK/ASK operation. The starting point for the optimization is the preferred settings given by the SmartRF® Studio SW. The user needs to measure the sensitivity (PER) over the full input dynamic range to determine the optimum...
    on Feb 16, 2012

  • Wiki Page: DN017 CC11xx 868/915 MHz RF Matching

    Glenn B
    This design note gives a short introduction to RF matching and important aspects when designing products using the CC11xx parts. Since all the CC11xx parts have the same RF front end, the same matching network can be used between the radio and the antenna. Texas Instruments provides a reference design...
    on Feb 16, 2012

  • Wiki Page: DN016 Compact 868/915 MHz Antenna Design

    Glenn B
    This document describes an antenna design that can be used with all transceivers, transmitters, and SoC from Texas Instruments which are capable of operating in the 868 and 915 MHz band. The antenna has been implemented on a USB dongle with CC1111 [1], which is a sub 1 GHz SoC with USB controller...
    on Feb 16, 2012

  • Wiki Page: DN015 Permanent Frequency Offset Compensation

    Glenn B
    Due to component inaccuracy (e.g. crystal drift/tolerance) an RF link might suffer a certain frequency offset between transmitter and receiver, which again could cause degraded sensitivity and link performance/range. The CC11xx/CC25xx counteracts this by using a built-in frequency offset compensation...
    on Feb 16, 2012

  • Wiki Page: DN012 Programming Output Power on CC1100 and CC1150

    Glenn B
    The CC1100 and CC1150 RF output power level is set by the PATABLE register setting. This register setting also influences the power levels at the different harmonics and the current consumption for the device. These parameters must therefore be considered when choosing the optimal register settings....
    on Feb 16, 2012

  • Wiki Page: DN009 Upgrade from CC1100 to CC1101

    Glenn B
    This document explains the similarities and differences between the CC1100 and the CC1101 RF transceivers. The CC1101 is an upgrade of the existing CC1100 transceiver, and all performance parameters are equal or better on the CC1101. For most customers the CC1101 can be a drop-in replacement of the CC1100...
    on Feb 2, 2012

  • Wiki Page: DN008 868 MHz and 915 MHz PCB Antenna

    Glenn B
    This document describes a PCB antenna designed for operation in the 868 MHz and 915 MHz ISM bands. This antenna can be used with all transceivers and transmitters from Texas Instruments, which operates in these frequency bands. Maximum gain is measured to be 4.6 dB and overall size requirements for this...
    on Feb 2, 2012

  • Wiki Page: DN006 CC11xx Settings for FCC 15.247 Solutions

    Glenn B
    FCC CRF part 15.249 restricts the fundamental radiated power to 50 mV/m at 3 meters distance (-1 dBm EIRP) in the 902-915 MHz ISM band in the US. FCC 15.247 specify additional requirements that allows the application to increase the output power above what is specified in part 15.249. There are in general...
    on Feb 2, 2012
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