Analog Signal Chain real world problem solutions: Technology and Tools
    • Apr 9, 2015

    4K video transport made easy

    The National Association of Broadcasters (NAB) show is just a few days away; the broadcast video world will take over Las Vegas to showcase their latest innovations April 13-16. Over the years, this market has evolved from standard definition (SD) (SMPTE-259M) to high definition (HD) (SMPTE-292M) to 3G (SMPTE-424M). Fueled by the four-times-higher resolution...
    • Apr 7, 2015

    Trimmed or chopped: How do you like your op amp?

    Depending on the application you’re working on, smaller offset voltages do not always mean higher precision or better DC performance. First, you need to determine the most dominant source of error. If indeed it is the input offset voltage then ...
    • Apr 3, 2015

    RF Sampling: The new architecture on the block

    ** This is the first post in a new RF-sampling blog series that’ll appear monthly on Analog Wire ** The need for bandwidth is insatiable. We want more gaming, more video streaming and more social-media interactions on our smartphones. Plus, the...
    • Mar 25, 2015

    How to protect USB host ports with ESD current-limit protection devices

    One of the hottest topics regarding interface technology today is the universal serial bus (USB) Type-C connector, popular for its reversibility, higher data transfer, power delivery and additional protocols. While there is much excitement over the new standard, the reality is that the USB Type-A connector is still prominent and is being designed into...
    • Mar 23, 2015

    The future of data converter interfaces

    I’m a very direct individual, and when I think of data-conversion technology, I quickly categorize it into buckets: Precision: Typically less than 1 Msps with a high dynamic range (+20 bits). General purpose: Anywhere from 1 Msps to 20 Msps with a moderate dynamic range (12-16 bits). High speed: 20 Msps to 1 Gsps with a good dynamic...
    • Mar 20, 2015

    JESD204B: Serial link quality tradeoffs and tools for optimization

    One of the most important goals in a JESD204B system design is achieving good signal quality in the serial data link. The signal quality is determined by the circuit board dielectrics, the quality of the signal routing, any connectors in the signal p...
    • Mar 18, 2015

    Don’t procrastinate, isolate! The need for a basic galvanic isolator

    Digital galvanic isolation has an important part to play in the world. It does an amazing thing: it protects precarious products from unscheduled electrical blowback like a suit of armor might against an unsuspected ricochet on the battlefield. In addition to this protection, it also facilitates communication between devices. Sometimes two devices...
    • Mar 13, 2015

    On Board with Bonnie: ADC noise from the inside out

    I must apologize. I am going to approach analog-to-digital converter (ADC) noise from an analog perspective. You may be surprised about this view because this discussion usually focuses on a digital perspective, but the analog outlook does work out quite elegantly. Delta-sigma ADCs such as the ADS1220 (Figure 1) give you detailed information about...
    • Mar 12, 2015

    Extending battery life for IoT applications

    As the world constantly evolves to keep everything and everyone connected, wireless sensors are becoming more and more popular in the Internet of Things (IoT) market. Several definitions for the IoT exist, but one simply defines it as keeping up to date with our surroundings by measuring the environment with remote sensors. Figure 1: IoT system...
    • Mar 6, 2015

    A race against the clock: how to determine the power-up states of clocked devices

    Many engineers choose flip-flops, shift registers, or other clocked devices for temporary storage and moving small amounts of data. These clocked devices have one or more clock-input pins, typically designated CLK or CP. A clock edge will determine when a specific function occurs; for example, the data may be clocked to an output, or data may be moved...