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Variable-gain amplifier - Wikipedia
https://en.wikipedia.org/wiki/Variable-gain_amplifier#:~:text=A%20variable-gain%20or%20voltage-controlled%20amplifier%20is%20an%20electronic,including%20audio%20level%20compression%2C%20synthesizers%20and%20amplitude%20modulation.
Activity: Variable Gain Amplifiers [Analog Devices Wiki]
https://wiki.analog.com/university/courses/electronics/electronics-lab-variable-gain-amplifier
A variable-gain or voltage-controlled amplifier is an electronic amplifier that varies its gain depending on a control voltage. This type of circuit has many applications, including audio level compression, synthesizers and amplitude modulation.
Variable Gain Amplifiers (VGA) | Analog Devices
https://www.analog.com/en/products/amplifiers/variable-gain-amplifiers.html
Variable gain amplifiers (VGAs) are used in a variety of remote sensing and communications equipment. Variable gain amplifiers deliver unmatched performance for signal chains that require high dynamic range. Applications ranging from ultrasound, radar, LIDAR, wireless communications, and speech analysis have utilized VGAs to deliver industry leadi
Variable Gain Amplifiers | NXP Semiconductors
https://www.nxp.com/products/radio-frequency/rf-amplifiers-low-medium-power/variable-gain-amplifiers:MC_50948
Variable gain amplifiers (VGAs) adjust audio gain based on control voltage for amplitude modulation, level compression and synthesizers. Our portfolio of digital VGAs includes solutions with high linearity and high output power across a large bandwidth without external matching. They help simplify designs, decrease footprints and offer power savings that can effectively …
MT-072: Precision Variable Gain Amplifiers (VGAs)
https://www.analog.com/media/en/training-seminars/tutorials/MT-072.pdf
Figure 1: Variable Gain Amplifier (VGA) Applications . Such a device has a gain that is controlled by a dc voltage or, more commonly, a digital input. This device is known as a variable gain amplifier (VGA), or programmable gain amplifier (PGA). In the case of voltage-controlled VGAs, it is common to make the gain in dB proportional to a linear ...
Calculating Gain for Audio Amplifiers (Rev. A)
https://www.ti.com/lit/pdf/sloa105
1.3 Gain Setting for the Audio Power Amplifier It is also imperative to understand that the output signal from the CODEC or DAC driving the audio power amplifier should be as large as possible, to have a high SNR. Conversely, the gain of the audio power amplifier is set as low as possible. If the audio power amplifier’s gain is set
Op-Amp Variable Gain Amplifier Circuit - Electronics Notes
https://www.electronics-notes.com/articles/analogue_circuits/operational-amplifier-op-amp/variable-gain-amplifier.php
The op amp variable gain circuit below maintains input impedance over the range of the gain, providing a distinct advantage in some instances. Op amp variable gain circuit. The circuit is very simple, and only uses one additional component over that of a basic operational amplifier circuit. The circuit simply uses a single variable gain amplifier.
Amplifier Voltage Gain Explained – Matching Amp to …
https://www.audioholics.com/audio-amplifier/amplifier-voltage-gain
Most everyone that has ever purchased an external amplifier is at least familiar with the term voltage gain. Simply, it is the degree to which an amplifier actually amplifies the input from the preamplifier/processor. Often overlooked by those unaware of its importance, this one parameter can have significant implications on actual performance when an amplifier is …
Class D power amps with Variable Gain? | Audio Science ...
https://www.audiosciencereview.com/forum/index.php?threads/class-d-power-amps-with-variable-gain.14156/
The "problem" is that most power amps do not offer variable gain. Exceptions I have found are XTZ Edge A2-300 and Crown XLS 1502 or 2502. Both get good reviews, but do not appear to benefit from the latest state-of-the art within this technology, such as the Hypex NC400.
Amplifier Circuits - Learn About Electronics
https://www.learnabout-electronics.org/Downloads/amplifiers-module-04.pdf
Pre-amplifiers often need a number of different inputs, each with a different gain and/or different input impedance. This is to ensure that each device connected to the various inputs provides (after pre-amplification) an output level sufficient to drive the input of a power amplifier and provide full power (when full volume is used) and minimum
Understanding Amplifier Power - Geoff the Grey Geek
https://geoffthegreygeek.com/understanding-amplifier-power/
Double amplifier power does not double the volume. This article logically shows the relationship between amplifier power, SPL and loudness. It includes a level difference exercise and a gain calculator. Understanding Audio.
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