Articles Analog Devices - 4

31. Voltage Conversion in Four Quadrants
    Supply Analog Devices LT8714
    A four-quadrant dc-dc converter offers an elegant way to control currents and voltages, and is able to set current to any level. While simple voltage converters can generate a fixed output voltage from an input voltage, this behavior isn’t ...
    Nov 10, 2020
32. Monolithic Switching Regulator—When Everything Is on a Chip
    Supply Analog Devices ADP1874 ADP2441
    A switching regulator can be constructed either monolithically or via a controller. In a monolithic switching regulator, the respective power switches, usually MOSFETs, are integrated within a single silicon chip. With controllers, in addition to ...
    Nov 3, 2020

33. How to Build a MEMS-Based Solution for Vibration Detection in Condition Monitoring
    Measurement Analog Devices ADXL1002 AD4000
    Condition monitoring is one of today’s core challenges in the use of mechanical facilities and technical systems in which, for example, motors, generators, and gears are used. Planned maintenance is becoming more and more important for ...
    Oct 8, 2020
34. Guarded Limiters Improve High Impedance Sensor Dynamic Range
    Measurement Analog Devices ADA4530-1
    Abstract Measuring the signals from extremely high impedance sensors is a difficult task. These sensors can have output impedances in the Teraohms (1×10 12 Ω). The tiny signal currents coming from sensors such as Faraday cups and ...
    Sep 18, 2020
35. Learning to like high-voltage op-amp ICs
    Bill Schweber
    Amplifiers Analog Devices AD820AR LT1055 ADHV4702-1
    A lot of the analog-circuit conversation these days is centered on low-power and thus low-voltage considerations. That makes sense for operational amplifiers (op amps), of course, since these basic analog building blocks often serve as a buffer or ...
    Aug 18, 2020
36. Upper End Limitations of a Duty Cycle
    Frederik Dostal
    Supply Analog Devices ADP2370 ADP2441
    Switching regulators use a duty cycle to realize voltage or current feedback control. The duty cycle is the ratio of the turn-on time (T ON ) to the complete cycle length, the turn-off time (T OFF ) plus on time, and defines a simple relationship ...
    Jun 17, 2020
37. What Actually Is a Hot Loop?
    Frederik Dostal
    Supply Analog Devices LT8609S
    Electromagnetic compatibility and oftentimes PCB trace routing are key participants in the switching-regulator hot-loop phenomenon. The term hot loop is relevant whenever switching regulators and their electromagnetic compatibility (EMC) are ...
    Jun 2, 2020
38. The Flyback Power-Supply Architecture and Operation
    Bill Schweber
    Supply Analog Devices LT8304 LT8316
    The flyback topology is a versatile, widely used, switched-mode power-supply design with some interesting characteristics that brings performance and BOM advantages to many applications. The flyback design is a switched-mode power supply (SMPS) ...
    Apr 30, 2020
39. 4-Switch Buck-Boost Controller with Pass-Thru Capability Eliminates Switching Noise
    Supply Analog Devices LT8210
    David Megaw and Bruce Haug, Analog Devices Design Note Introduction A common dc-to-dc converter problem is generating a regulated voltage when the input voltage can be above, below, or equal to the output that is, the converter must perform both ...
    Mar 25, 2020
40. Guidelines for Placing the Inductor on a Switch Mode Power Supply Printed Circuit Board
    Frederik Dostal
    Printed Circuit Boards (PCB) Supply Analog Devices ADP2360
    Question: Where should the coil go? Answer: Switching regulators for voltage conversion use inductors for temporarily storing energy. These inductors are often very large components and must be positioned in the printed circuit board (PCB) layout ...
    Mar 10, 2020

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