Analog Signal Chain real world problem solutions: Technology and Tools
    • Feb 13, 2017

    Digital signal processing in RF sampling DACs - part 1

    In this blog post, I will discuss the important digital signal processing (DSP) blocks that create all of the magic in direct RF sampling DACs. These blocks include interpolation filters, mixers, numerically controlled oscillators (NCOs), summers and inverse sinc filters. What makes RF sampling devices magical is that they combine digital interpolation...
    • Feb 9, 2017

    RF sampling: Learning more about Latency

    In this post, I’m going to discuss latency in an analog-to-digital converter (ADC). Latency is the time it takes for a signal to travel from point A to point B. In an ADC, latency is how long it takes from the time that an analog input is applied to the time that the digital output word becomes available. Why is latency important? Regardless...
    • Jan 26, 2017

    Solve the challenge of too many wires in high-speed networking equipment

    Top-of-rack (ToR) switches, routers, servers and storage, types of today’s high-speed communications equipment , are among the most sleek, powerful and meticulously designed workhorses of the data center. They contain impressive circuitry, pushing +25Gbps with scores of ports, complex switch application-specific integrated circuits (ASICs) and...
    • Jan 17, 2017

    Inductive sensing: reliably detect faults in circuit breakers using contactless inductive switches

    In my last blog post , I discussed how to use inductive switches for proximity applications. In this post, I want to discuss how to use inductive switches in slide switch applications to make circuit breakers more reliable. Circuit breakers typically ...
    • Jan 12, 2017

    Explore the non-speed-related benefits of CAN FD

    Most discussions about Controller Area Network with Flexible Data-Rate (CAN FD) invariably revolve around its most distinctive feature – increased speed. Naturally, this leads to the assumption that if you don’t need the speed, then you don’t need FD. But that is not always true! Join me as I take a look at a couple of the lesser-known...
    • Jan 10, 2017

    Don’t let bad reference signals destroy the phase noise in your PLL/synthesizer

    “You are what you eat” is a commonly heard saying that recommends the careful selection of food, given its ability to directly affect our health and well-being. Although not an exact comparison, the concept applies if you think of your input reference signal as the food, ingested by the phase-locked loop (PLL)/synthesizer, which affects...
    • Dec 29, 2016

    Six easy steps to select the right digital isolator for solar-inverter applications

    With the solar inverter market growing at a fast rate based on data from International Energy Agency (IEA), it is imperative that designers be able to design their systems faster to meet the market’s needs. But the high voltages of these types of systems require additional care in component selection and system design to develop equipment that...
    • Dec 22, 2016

    Do you always need a LDO in front of your data converter?

    Figure 1: SNR of the ADS5407 powered by LDOs or DC/DCs Can you tell the difference in the signal-to-noise (SNR) ratio shown in Figure 1? Neither can the ADS5407 12-bit analog-to-digital converter (ADC). Both the low-dropout (LDO) linear regulators and the step-down (buck) DC/DC converters give the same data converter noise performance. How is noise...
    • Dec 13, 2016

    Inductive sensing: make your proximity-switch applications as easy as 1, 2, 3 with WEBENCH

    When customers are designing proximity-switch applications using inductive sensing devices like the LDC0851 switch, they often ask me how to design a coil for a given switching distance. Today, I want to show you how to use TI’s new WEBENCH®...
    • Dec 8, 2016

    What you need to know about input bias current – and why

    One of my standard interview questions for new college graduates is to describe the non-ideal aspects of an operational amplifier (op amp ). While most candidates start with open-loop gain, offset voltage, bandwidth and noise, only a few mention input bias current. Even experienced circuit designers often have questions about input bias current and...