Articles Analog Devices

1. Generating negative voltages - why you need level shifting in buck-boost circuits
   Frederik Dostal
   Supply Analog Devices ADP2386 MAX17579
   Inverting buck-boost circuits are commonly used for generating negative supply voltages from positive voltages. The most important step is ensuring that the negative voltages are generated correctly. However, additional level shifting circuits may ...
   Dec 12, 2024
2. Getting an audio signal with a THD < 0.0002% made easy
   Jordan Dimitrov
   Audio Measurement Analog Devices LTC6903 MAX293
   If you need a very pure sine wave in the audio range, the circuit in Figure 1 can help. It is a simple deal: A sine wave with a THD of 1% coming from a function generator that goes through a trackable low-pass filter, which attenuates the ...
   Oct 22, 2024

3. Gain-of-two instrumentation amplifier uses no external resistors
   Marián Štofka
   Analogue Design Amplifiers Analog Devices AD8222
   An instrumentation amplifier offers precise gain without feedback resistors, and, at any value of gain, it provides high input impedances at its noninverting and inverting inputs. In a typical IC instrumentation amplifier, a single resistor that ...
   Sep 3, 2024
4. Voltage-reference IC with integral heater offers single ppm-class results
   Bill Schweber
   Analogue Design Measurement Supply Analog Devices ADR1001
   Designers charged with creating precision analog front ends and signal chains know that the performance of the voltage reference whether a discrete standalone device or one that’s embedded in a component such as the analog-to-digital ...
   Aug 27, 2024
5. 4× JFET buffer amplifier cuts noise in half
   Chau Tran Jordyn Rombola
   Analogue Design Analog Devices AD8244
   In many electronic circuits, there is always a demand for a device to isolate or separate one circuit from another. This special device is called a buffer. A buffer is a unity-gain amplifier that has an extremely high input resistance and an ...
   Jul 9, 2024
6. How to create a dual-output voltage rail with source and sink functionality for ATE applications
   Anthony Serquiña Jhun Rennel Sanchez
   Measurement Supply Analog Devices LTC3871
   Abstract This article details a method of generating dual-output voltage rails that provide both the positive and negative rails for a device power supply (DPS) while requiring only one bidirectional power supply. The traditional method of powering ...
   May 29, 2024
7. How to overcome the limits of boost converters
   Frederik Dostal
   Supply Analog Devices ADP1621
   Abstract This article will explain the inherent limitations of the boost topology and how to overcome them. When designing and evaluating boost converters, sometimes the intended output voltage is not realized. Instead, it has a lower value than ...
   May 22, 2024
8. The elegance of a flyback controller without a dedicated isolated feedback path
   Frederik Dostal
   Supply Analog Devices LT8300
   Figure 1 shows the architecture of a conventional isolated flyback converter. These converters can be found frequently in power classes of up to about 60 W. A supply voltage is converted to an output voltage with the help of a primary-side switch ...
   May 16, 2024
9. Measurement circuit features high common-mode rejection
   Chau Tran Moshe Gerstenhaber
   Analogue Design Measurement Analog Devices AD629
   Modern measurement systems often operate with single 5-V power supplies, yet their input signals may have large common-mode voltages that exceed the supply by tens or hundreds of volts. Also, unless the converter is driven differentially, the noise ...
   May 6, 2024
10. Precise voltage regulation with dynamic voltage scaling
    Frederik Dostal
    Supply Analog Devices ADP2147 MAX20480
    Abstract This article discusses the use of dynamic voltage scaling (DVS) to achieve precise voltage regulation. DVS is a process that adjusts the output voltage slightly higher or lower in anticipation of load transients. The article examines how ...
    Apr 23, 2024

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