Low Power RF & Wireless Connectivity

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Low Power RF & Wireless Connectivity

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CC2400
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  • Forum Post: What will Voh & Vol be when DVDD3.3 is supplied with 1.8V?

    solofrain
    The datasheet only gives the values for 3.3V power supply. I'd prefer 1.8V for lower power consumption.
    on Nov 19, 2008

  • Forum Post: CC2400 current consumption.

    solofrain
    For CC2400, what's the current consumption for core (AVDD/DVDD1.8, be 1.8V) and digital I/O (VDDIO, be 3.3V) separately? The datasheet doesn't differentiate the two parameters in sectio 5 Electrical Specifications.
    on Jan 7, 2009

  • Forum Post: Re: CC2400 current consumption.

    arne3009
    The current consumption of the digital I/O (DVDD3.3) is dependent on the pin activity / load. The current consumption stated in the data sheet includes the DVDD3.3, and assumes a minimum of activity on the pins (such as data being output during RX). For instance, in RX the current consumption on the...
    on Jan 12, 2009

  • Forum Post: Re: Folded bipole antenna for CC2400 - board design.

    Per H
    Hi, 1. They are vias going from top layer to bottom layer. 2. You can find some info about layer thickness in the readme.txt file. The material used is standard FR4. 3. Not sure what you mean here, but there are ground planes rather than star grounding.
    on Feb 15, 2009

  • Forum Post: CC2400 Errata Note 002

    Paul Kleissler
    Hi all, This errata is for "Slow receive start up times" and provides a software workaround. Has anyone gotten this to work? My team states that they have been unable to reduce the start up time below 1ms. Thanks Paul
    on Aug 16, 2010

  • Wiki Page: AN035 CC2400 FIFO Usage

    Kjetil
    The CC2400 RF transceiver includes a 32 byte FIFO, and FIFO and PKT pins capable of packet handling signalling as part of the microcontroller interface. The FIFO signal is used in buffered mode, which is a packet data transfer mode providing burst capabilities. Using buffered mode significantly offloads...
    on Nov 19, 2010

  • Wiki Page: AN031 Mono Audio Link Using Frequency Hopping

    Kjetil
    Digital wireless audio can be applied in a wide range of audio systems. Wireless HiFi loudspeakers, surround sound systems and microphones are examples of such systems. This application note describes the software and hardware necessary for a simple robust single channel (mono) audio system with error...
    on Nov 19, 2010

  • Wiki Page: AN040 Folded dipole antenna for CC2400, CC2420, CC2430, CC2431, and CC2480

    Kjetil
    This application note describes the design of a folded dipole antenna for CC2400, CC2420, CC2430, CC2431, and CC2480. The design described in this application note is based on the CC2400, but it is possible to tune the antenna impedance so it can be used with CC2420, CC2430, CC2431, and CC2480. The...
    on Nov 19, 2010

  • Wiki Page: AN043 Small Size 2.4 GHz PCB antenna

    Kjetil
    The PCB antenna used on the CC2511 USB dongle reference design is described in this application note. Even if the antenna presented is for a USB dongle design it can be used in all 2.4 GHz designs, especially where small space is required for the antenna. This application note describes the antenna dimensions...
    on Nov 19, 2010

  • Wiki Page: AN032 SRD regulations for license-free transceiver operation in the 2.4 GHz band

    Kjetil
    International regulations and national laws regulate the use of radio receivers and transmitters. This document is a summary of the most important aspects of these regulations for license-free operation of radio receivers and transmitters in the worldwide 2.4 GHz band. Although the operation of transceivers...
    on Nov 19, 2010

  • Wiki Page: AN021 Voltage Level Conversion

    Kjetil
    Texas Instruments RF-ICs operate with supply voltages lower than the old industrystandard 5V. Running at a lower voltage enables the ICs to be less expensive and have lower power consumption than they would have had if they used a 5 V supply. Also, lower operating voltages are good for battery-operated...
    on Nov 19, 2010

  • Wiki Page: AN081 Johanson Technology balun optimized for CC2530

    Kjetil
    AN081 -- Johanson Technology balun optimized for CC2530 ( http://focus.ti.com/general/docs/techdocsabstract.tsp?abstractName=swra297 ) The swra297.zip file ( www.ti.com/litv/zip/swra297 ) contains schematics and layout files for the CC2530 that contain one part from Johanson Technology interfacing...
    on Nov 19, 2010

  • Wiki Page: Antennas in development kits

    Kjetil
    Q: FAQ: Antennas in development kits Antennas used in the Low Power Wireless development kits. 433 MHz development kits: - Badland SMAFF-433 ( www.badland.co.uk ) 868-915 MHz development kits: - CC11xx: Previously Nearson S331AM-915, has recently been changed to Nearson S463AM-915 ( www.nearson...
    on Nov 22, 2010

  • Wiki Page: EMI shield

    Kjetil
    Q: FAQ: EMI shield by 613920 Does TI recommend an EMI shield to pass FCC? None of the reference designs make this recommendation. Usually TI LPW reference designs do not require an RF-Shield. This is generally achieved by filling ground on any available area not used for routing. This shortens...
    on Nov 22, 2010

  • Wiki Page: Sensitivity and link budget calculations

    Kjetil
    Q: FAQ: Sensitivity and link budget calculations Noise NF Range extension, S/N requirements . We got some experience data for sensitivity improvements: The noise factor has been retrieved by adding external LNA with known gain and noise characteristic and then monitored the enhanced sensitivity...
    on Nov 22, 2010

  • Wiki Page: VIA and solderpaste coverage for LPRF transceivers

    Kjetil
    Q: FAQ: VIA and solderpaste coverage for LPRF transceivers The area under the chip is used for grounding and shall be connected to the bottom ground plane with several vias for good thermal performance and to minimize inductance to ground . In the reference designs available from the TI web site...
    on Nov 22, 2010

  • Wiki Page: RF Testing in production

    Kjetil
    Q: FAQ: RF Testing in production The prototypes and the first batch should go through qualification testing. For later batches, samples can be submitted to qualification tests and remaining devices to production test. The level of testing must be seen in connection with cost and consequence of failure...
    on Nov 22, 2010

  • Wiki Page: Samples of LPRF devices

    Kjetil
    Q: FAQ: Samples of LPRF devices For samples of LPRF products, please see the following for direct sample requests: http://www.ti.com/home_b_samples
    on Nov 22, 2010

  • Wiki Page: Connector on CC EM modules

    Kjetil
    Q: FAQ: Connector on CC EM modules The PCB connector used on the EM (Evaluation Modules) for the chips mentioned above is: Samtec TFM-110-02-S-D-K-A. The connectors are 1200mils apart (centre to centre). More details, including the recommended footprint, can be found on: http://www.samtec.com/ftppub...
    on Nov 22, 2010

  • Wiki Page: PCB Antenna for 2.4 GHz

    Kjetil
    Q: FAQ: PCB Antenna for 2.4 GHz Examples of PCB antennas are: Inverted F antenna that is used on CC2430DB. See Design Note DN007 . Meandered Inverted F is used on our CC2511 USB dongle reference design, see Application Note AN043 . Folded dipole antenna. See Application Note AN040 and...
    on Nov 22, 2010

  • Forum Post: Re: CC2400 RSSI odd behavior

    Tor-inge
    Hi Eric Image Channel rejection is the level of a modulated interferer signal at the image channel while a wanted signal 10dB above the sensitivity limit is received in the wanted channel. I.e at 1Mbps an interferer signal < (-87+10+21= -56dBm) should hold no significant influence on communication...
    on Oct 17, 2011

  • Forum Post: Re: CC2400 with CC2591

    Tor-inge
    Might, be a compression issue. Try increasing distance between the two devices to see if communication resumes. Tor-Inge
    on Jan 17, 2012

  • Forum Post: Re: CC2400 with CC2591

    Tor-inge
    Hi Brandon Tuning the CC2591 circuitry is often a cumbersome task that requires a network analyzer and numerous iterations. Your observation that the performance is better at high channels indicates a response shift to higher frequencies. To compensate for this on the bias feeds the Tlines should...
    on Jan 23, 2012

  • Wiki Page: DN007 2.4 GHz Inverted F Antenna

    Glenn B
    This document describes a PCB antenna design that can be used with all 2.4 GHz transceivers and transmitters from Texas Instruments. Maximum gain is measured to be +3.3 dB and overall size requirements for this antenna are 25.7 x 7.5 mm. Thus, this is a compact, low cost and high performance antenna...
    on Feb 2, 2012

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