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  • Designing with low-power op amps, part 3: Saving power with the shutdown amplifier

    Daniel_Miller
    Daniel_Miller
    Other Parts Discussed in Post: TLV9042, TLV9041

    Note: Carolina Gomez collected the data for this article.

    In my previous articles, I walked through optimizing an operational amplifier (op amp) circuit for power savings and talked about some of the applications that can take advantage of amplifiers with low-voltage-supply capabilities. In this installment of the "Designing with low-power op amps" series, I will show you…

    • Jul 27, 2021
  • Solving 5 challenges of ECG signal acquisition in wearables

    Anand Udupa16
    Anand Udupa16
    Other Parts Discussed in Post: AFE4950

    With smartwatches and fitness bands widely used as personal health monitoring devices, the accurate acquisition of electrocardiogram (ECG) signals on these wearable devices has become a field of great interest. An ECG records activity in the heart through the acquisition of electrical signals. Conventional ECG systems such as patient monitors involve the connection of multiple electrodes…

    • Jul 21, 2021
  • How to transfer high-resolution video data over a single wire in machine vision-based applications

    Vijaya Ceekala
    Vijaya Ceekala
    Other Parts Discussed in Post: TDES960

    A diagram shows how V3 Link devices function in endoscopes, machine vision and robotic-assisted surgery applications.

    Artificial intelligence (AI) is fundamentally changing the capabilities of machine vision and imaging applications. Edge Al, a subset of artificial intelligence that enables localized decision making at the edge, plays a key role among other elements such as 5G network and the Internet of Things (IoT) in the development of New Infrastructure. Through focusing on equipping and enabling…

    • Jul 12, 2021
  • How to improve efficiency and precision with bipolar op amps

    Soufiane Bendaoud
    Soufiane Bendaoud
    Other Parts Discussed in Post: OPA2206, OPA2205While no one can argue about the progress made on complementary metal-oxide semiconductor (CMOS) and junction field-effect transistor (JFET) designs for operational amplifiers (op amps), bipolar op amps ...
    • Jun 23, 2021
  • Why long-term consistent performance matters for relative humidity sensors

    Phillip Luu
    Phillip Luu
    Other Parts Discussed in Post: HDC3020

    Relative humidity (RH) sensors are specialized sensors with an open cavity to measure water vapor present in the air. Relative humidity is a critical measurement, as humidity in the air can have a direct effect on system reliability (corrosion) or product longevity since humidity in a storage environment can have a direct impact on perishables.

    One of the challenges with RH sensors…

    • Jun 21, 2021
  • Solving the multidecade current-measurement challenge in your 48-V BMS application

    DHarmon
    DHarmon
    Other Parts Discussed in Post: INA240-Q1, INA229-Q1

    The proliferation of 48-V battery systems in vehicles has created a need for high-precision, multidecade current measurement to maximize the efficiency of the battery management system (BMS). In this article, I will discuss the challenge when measuring up to five decades of current and analyze methods to solve this challenge. I will also discuss how additional diagnostic…

    • Jun 14, 2021
  • Getting started in PSpice for TI, part 2: Using markers for quick and clean simulation results

    TI Staff Writer
    TI Staff Writer

    (This is a guest technical article from Cadence® Design Systems.)

    Part 1 of this series discussed optimizing your simulation profile in PSpice® for TI. After creating a schematic and a simulation profile, you are ready to simulate your circuit design and view the results.

    The results must be accurate, of course. However, the effectiveness of a simulation is only half as good as the flexibility and ease of viewing…

    • Jun 8, 2021
  • How to reduce board size and battery consumption in low-voltage H-bridge applications

    Dalton Ortega20
    Dalton Ortega20
    Other Parts Discussed in Post: DRV8210, DRV8220

    There are many approaches to designing low-voltage systems in motor-driven building automation and grid infrastructure applications such as smart meters, smart locks, Internet Protocol (IP) network cameras and video doorbells, as shown in Figure 1.

     

    Figure 1: Battery-powered systems: a video doorbell, smart utility meter and electronic smart lock

    Common challenges when designing…

    • Jun 1, 2021
  • 4 common questions when isolating signal and power

    Neel Seshan
    Neel Seshan
    Other Parts Discussed in Post: ISOW1432, ISOW1412, ISOW1044

    A high-voltage circuit design requires isolation in order to protect human operators, enable communication to lower-voltage circuitry and eliminate unwanted noise within the system. Digital isolators provide a simple and reliable way to achieve high-voltage isolated communication in industrial and automotive applications.

    Maintaining the integrity of a signal…

    • Jun 1, 2021
  • What is a Hall-effect sensor?

    Manny Soltero
    Manny Soltero
    A Hall-effect sensor, also known as a Hall sensor, monitors magnetic fields with high accuracy, consistency and reliability. Why is that important? Because it enables you to sense the position and movement of objects in a system. In this article, I’ll explain what a Hall-effect sensor is, its basic building blocks and functionality, and common use cases for Hall-effect sensing products.
    • May 17, 2021
  • How to maximize powertrain efficiency and reliability with high-accuracy temperature sensors

    Bryan Padilla
    Bryan Padilla
    Other Parts Discussed in Post: TMP126-Q1, TMP126

    If you design automotive systems, you may feel tremendous pressure to redefine vehicle powertrain systems to meet the reduced greenhouse gas (GHG) emissions goals established by initiatives in the European Union, United States, China and Japan, just to name a few. To meet these targets, some automobile manufacturers are implementing 48-V systems for mild hybrid electric vehicles…

    • May 10, 2021
  • How smart amps are bringing high-fidelity audio into the smart home

    Ben Miller
    Ben Miller
    Other Parts Discussed in Post: TAS2563

    Smart speakers have become ubiquitous in homes, raising the bar for consumer audio quality standards in household items. New audio features are popping up in unlikely places: digital voice assistants in coffeemakers that announce a fresh brew, or digital thermostats that can tell you the weather while playing your favorite jazz album (Figure 1). As consumer reliance on smart home…

    • May 3, 2021
  • The next evolution in automotive op amps

    Tim Claycomb
    Tim Claycomb
    Other Parts Discussed in Post: AEC, LM2904-Q1, LM2904, LM2904B-Q1

    (Note: Thomas Foster and Esteban Garcia co-authored this technical article.)

    In 1976, National Semiconductor (now TI) introduced the LM2904, one of the most popular operational amplifiers (op amps) worldwide. It was a time when 8-track tapes played your favorite tunes in the car, a vehicle could get you an average of 14.22 miles to the gallon, and people…

    • Apr 14, 2021
  • Generating pulse-width modulation signals with smart DACs

    Katlynne Jones
    Katlynne Jones
    Other Parts Discussed in Post: DAC53701, DAC63004, DAC63204, DAC53204

    (Gavin Bakshi co-authored this technical article.)

    The technical article, “What is a smart DAC?” explained what a smart digital-to-analog converter (DAC) is and how it can bring value to many applications. Smart DACs can improve design efficiencies by reducing the burden of software development, and they provide many useful functions that would…

    • Apr 9, 2021
  • What is a smart DAC?

    Gavin Bakshi27
    Gavin Bakshi27
    Other Parts Discussed in Post: DAC53701, DAC63004, DAC63204, DAC53204

    Engineers are always striving to make things more effective, more efficient and less expensive. System designers typically use a precision digital-to-analog converter (DAC) when they need very precise control of an analog output. A design that requires precise control of auxiliary functions typically also needs a combination of discrete analog components…

    • Apr 9, 2021
  • Designing with low-power op amps, part 2: Low-power op amps for low-supply-voltage applications

    Daniel_Miller
    Daniel_Miller
    Other Parts Discussed in Post: TLV9042, TLV9001, OPA391

    In part 1 of this series, I covered issues related to power consumption in single-supply operational amplifier (op-amp) circuits with a sinusoidal output and DC offset. I also discussed two techniques for reducing power consumption in these circuits: increasing resistor sizes and picking an op amp with a lower quiescent current. Both tactics are available in most…

    • Mar 24, 2021
  • Clock tree fundamentals: finding the right clocking devices for your design

    Vibhu  Vanjari
    Vibhu Vanjari
    Other Parts Discussed in Post: LMK61E2, LMK03328, ADS1625, LMK04832, AFE5818Finding the right devices to build your clock tree doesn’t have to be difficult. Understandably, the plethora of options can be overwhelming. Also, selecting a less-tha...
    • Mar 24, 2021
  • Getting started in PSpice for TI, part 1: Optimize your simulation profile in 6 steps

    TI Staff Writer
    TI Staff Writer

    This is a guest technical article from Cadence® Design Systems.

    So, you have designed a circuit and are ready to start your simulation. How do you begin?

    To start, you need to define a simulation profile. Simulation profiles define the various aspects of a simulation or analysis for various simulators, including PSpice® for TI. Definitions may include the analysis you want to perform and the resources you want to…

    • Mar 5, 2021
  • How selective wake CAN transceivers enable lower power consumption in automotive designs

    Russell Crane
    Russell Crane
    Other Parts Discussed in Post: TCAN1146-Q1, TCAN1145-Q1Throughout every automobile lies an extensive in-vehicle network of sensors, motors and switches. As these networks grow to accommodate increasing connectivity across the vehicle, their overall p...
    • Feb 22, 2021
  • 3 key specifications when using a DAC as a programmable voltage reference

    Gavin Bakshi27
    Gavin Bakshi27
    Other Parts Discussed in Post: DAC81404

    Many automotive, communication and industrial systems take real-world input and provide corresponding outputs to create a precise control response. For example, autonomous driving detects and controls vehicles based on the real-world input of their proximity to other objects. In telecommunication radios or base stations, the outdoor temperature can affect power requirements for transmission…

    • Feb 19, 2021
  • How to optimize a motor-driver design for 48-V starter generators

    Issac Hsu
    Issac Hsu
    Other Parts Discussed in Post: DRV3255-Q1

    Manufacturers build mild hybrid electric vehicles (MHEVs) with the ultimate goal of reducing greenhouse gas (GHG) emissions. An MHEV incorporates a 48-V motor-drive system connected to the transmission system of a vehicle. To reduce GHG emissions, the internal combustion engine (ICE) in an MHEV turns off when the vehicle is coasting, while the 48-V motor system charges the 48-V…

    • Feb 17, 2021
  • Why precision matters with fully differential amplifiers

    Ilona
    Ilona
    Other Parts Discussed in Post: THP210

    Differential signaling is becoming more popular in analog front ends, especially in factory automation designs, to interface with differential analog-to-digital converters (ADCs). In this article, I’ll discuss the advantages of a fully differential signal path, explain why precision is important and discuss how new fully differential amplifiers can meet precision challenges.

    …
    • Feb 10, 2021
  • How current-sense amplifiers monitor satellite health

    Kyle Stone
    Kyle Stone
    Other Parts Discussed in Post: TEST, INA901-SP, INA240-SEP

    Several commercial satellite companies have entered the space sector with a major impact, revolutionizing this once largely government-funded activity. The need to launch more satellites per year is driven by companies wanting to develop telecommunications mega-constellations, robust radar networks and enhanced optical imaging platforms into low-Earth orbit,…

    • Feb 8, 2021
  • Designing with low-power op amps, part 1: Power-saving techniques for op-amp circuits

    Daniel_Miller
    Daniel_Miller
    Other Parts Discussed in Post: TLV9042, TLV8802, OPA2333, OPA391, TLV9002

    In recent years, the popularity of battery-powered electronics has made power consumption an increasing priority for analog circuit designers. With this in mind, this article is the first in a series that will cover the ins and outs of designing systems with low-power operational amplifiers (op amps).

    In the first installment, I will discuss power…

    • Feb 2, 2021
  • How accurate sensing in HVAC systems improves efficiency and saves consumers money

    Phillip Luu
    Phillip Luu
    Other Parts Discussed in Post: TMP61, HDC2022

    When designing for increased efficiency in heating, ventilation and air-conditioning (HVAC) systems, sensor accuracy and consistency have a significant effect. A system’s ability to accurately sense and measure temperature and humidity levels of inside and outside air sensors, damper controls, thermostats and fans minimizes system run time because the system can use more data…

    • Jan 26, 2021
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