Articles Analog Devices - 4

31. Difference amplifier uses digital potentiometers
    Analogue Design Analog Devices AD5235
    You sometimes need to measure a small signal in the presence of a large common-mode signal. Traditional instrumentation amplifiers that use two or three op amps in their internal structure find common use in these applications. The circuit in ...
    Apr 15, 2021
32. A Relatively Easy Way to Realize a Programmable LED Driver
    Thomas Brand
    Supply Light Analog Devices AD5686 ADA4500-2 ADR4520
    Source: tektonministries.org . LEDs are increasingly being used as energy saving light sources as a response to new energy regulations. They have decisive advantages over conventional lights: they consume less energy, have longer lifetimes, and are ...
    Mar 22, 2021

33. When the Flyback Converter Reaches Its Limits
    Frederik Dostal
    Supply Analog Devices ADP1071-1 ADP1074
    Galvanically isolated power supplies are used in numerous applications for different reasons. In some circuits, galvanic isolation is necessary due to safety considerations. In other circuits, functional isolation is used to block any interference ...
    Jan 15, 2021
34. Circuit provides flexible gain ranges
    Amplifiers Analog Devices AD623
    Certain designs need a programmable-gain amplifier with a wide gain range and high accuracy and common-mode rejection. Usually, it's wise to exploit a programmable-gain instrumentation amplifier, such as an AD625 . Unfortunately, the gain range ...
    Dec 7, 2020
35. 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
36. 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
37. 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
38. 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
39. 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
40. 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

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