Analog Signal Chain real world problem solutions: Technology and Tools
    • Dec 5, 2016

    How switching above the AM band eases automotive Class-D amplifier EMC designs

    As I recall riding in my dad’s 1957 Chevy, every time he would change the radio to a new station in the AM band, I could hear a lot of static. This loud buzzing sound represents noise from the car’s alternator or ignition system, which either gets transferred into the power supply of the radio or interferes with the radio’s antenna...
    • Dec 1, 2016

    How to correct 10Gbps performance issues with a USB Type-C™ active redriver multiplexer

    With today’s 4K ultra high-definition (UHD) TVs (and future 8K UHD TVs), as well as solid-state storage speeds, more video and data bandwidth is a must. Interface standards groups in the industry are addressing this trend by enabling more video and data bandwidth. For example, the Video Electronics Standards Association (VESA) DisplayPort 1.4...
    • Nov 29, 2016

    How you can use the LDC racetrack inductor designer tool

    In my previous post, I introduced the LDC calculator tool, which you can download here . It can calculate a number of useful parameters for an Inductive Sensing application. LDC devices use inductors to sense the movement of conductive targets. At TI, we commonly use spiral traces routed on a printed circuit board (PCB) to form sensing inductors...
    • Nov 28, 2016

    Why phase noise matters in RF sampling converters

    ** This is the 16th post in an Analog Wire RF sampling blog series . ** Radio frequency (RF) sampling data converters support very wide signal bandwidths and a variety of modulation schemes. The clocking performance for the RF sampling data converter is very important. I previously discussed the importance of the sampling clock and the implications...
    • Nov 24, 2016

    Intro to I2C: what the Internet doesn’t tell you

    I trust Internet search engines as my first source to provide me with reliable and quick answers, so when I first encountered the I 2 C protocol , I asked my trusted-source to help out. My search responded with: the Inter-Integrated Circuit (I 2 C) protocol is a bi-directional two-wire serial bus that provides a communication link between integrated...
    • Nov 22, 2016

    A survival guide to scaling your PLL loop filter design

    Let’s say that you have already spent some time optimizing your phase-locked loop (PLL) by iteratively massaging the phase margin and loop bandwidth. Unfortunately, you may still be unable to get a good compromise between phase noise, spurs and lock time. Frustrated? Ready to give up? Wait! Have you ever played around with the gamma optimization...
    • Nov 21, 2016

    USB Type-C™: Will your ESD solution protect the port?

    If you are a designer tasked with migrating the USB ports in your system to the latest USB standard and USB Type-C connector , you have likely already considered a couple of things. ESD protection First, as with all systems where a connector is exposed externally to users, your system would need to have International Electrotechnical Commission...
    • Nov 17, 2016

    Two ways to save power with low-power Ethernet

    “Why is Ethernet so power-hungry?” is a common question. A typical active power 10/100 Mbps Ethernet physical layer (PHY) transceiver consumes 110mW to over 300mW, while a 10/100/1000Mbps Gigabit Ethernet PHY consumes 450mW to over 1,000mW of power. It’s not uncommon for an Ethernet PHY to be one of the single largest consumers of...
    • Nov 14, 2016

    Robust isolators prevent you from saying “I see dead circuits!”

    In this day and age, when we change gadgets every year, we hardly care about how many years these gadgets last. It has a long lifetime if it lasts until the unveiling of the next revision. But there are many applications, especially industrial such as factory automation and motor control , where a longer equipment lifetime is critical to guarantee lower...
    • Nov 10, 2016

    How to use the LDC calculations tool

    While developing inductance-to-digital converters (LDCs) at TI, we often use a variety of spreadsheets to determine the appropriate settings or capabilities. I decided to combine all of the various tools into a single spreadsheet for convenience, and...