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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
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 | 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 control voltage.
Programmable & variable gain amplifiers (PGA/VGA ...
https://www.ti.com/amplifier-circuit/pga-vga/overview.html
Variable gain amplifiers. to meet your varying performance requirements. Gains up to 1000V/V and bandwidths to 4.5GHz - get the right gain at the right time. We offer a wide range of variable and programmable gain amplifiers capable of improving the dynamic range of a circuit with the ability to adjust the amplitude of the signal in real time.
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.
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.
PS Audio GCC-100 integrated amplifier | Stereophile.com
https://www.stereophile.com/integratedamps/106ps/index.html
Instead, PS Audio calls the GCC-100 and its sisters, the GCC-250 and the GCC-500, Control Amplifiers or Variable Gain Power Amplifiers. Unlike a standard integrated amplifier, the GCC-100 has no volume control in the traditional sense; ie, no potentiometer or resistor ladder that shunts part of the signal through ground. Instead, the gain is varied directly by a …
Amplifier Voltage Gain Explained – Matching Amp to …
https://www.audioholics.com/audio-amplifier/amplifier-voltage-gain
So if our amplifier has a gain of 28dB, we find that our amplifier is boosting the input from the preamplifier by a factor of 10^(28/20) or ~25.1. So if our amplifier rated to delivering 20 volts RMS and is amplifying the input signal by a factor of 25.1, we can know say that our preamplifier needs to deliver no less than: (20/25.1) = 0.797V RMS to drive our …
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