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Aphex 1537 Datasheet - KA-Electronics.com
https://www.ka-electronics.com/images/pdf/Aphex_1537A_VCA.pdf
VOLTAGE CONTROLLED audio ATTENUATOR APHEX The 1537 A is thé first high quality VCA (voltage controlled attenuator) offered to the professional market. Its IC package makes pricing attractive to the OEM user, It features extremely low distortion, low noise, high stability and wide dynamiC range, A control voltage precisely varies the output from unity
How can I make a simple voltage-controlled attenuator?
https://electronics.stackexchange.com/questions/84372/how-can-i-make-a-simple-voltage-controlled-attenuator
It must be able to attenuate the input anywhere from a gain of 1 down to a gain of about 0.25 (to get, say, a 15V input well within the 0-5V ADC range) The range of controlling voltages must also be within 0-5V. Furthermore, the range cannot be too small, since the Arduino can only select 256 values between 0-5V.
audio - Modifying Voltage Controled Amplifier to become ...
https://electronics.stackexchange.com/questions/229594/modifying-voltage-controled-amplifier-to-become-attenuator
Put an attenuation stage after the VCA. Then your gain will range from the attenuation factor (when the VCA is at unity) to the attenuation factor times the VCA max gain (when the VCA is at max gain). A simple voltage divider and op-amp buffer will probably suffice for most applications.
Voltage-Controlled Attenuator (Volume Control) Using FET ...
https://freecircuitdiagram.com/4656-voltage-controlled-attenuator-volume-control-using-fet/
Using the circuit shown in the schematic diagram below, we can control the low-level audio signals with ±3V variable DC voltage. This attenuator circuit uses a field effect transistor (FET) to shunt the signal to ground. The R2 is used to control the output level (the attenuation level), but you can use other source of voltage signal to control the grid of the FET, such as DAC output, …
Voltage Variable Attenuators - Analog Devices
https://www.analog.com/en/products/rf-microwave/attenuators/voltage-variable-attenuators.html
Voltage Variable Attenuators. Analog Devices voltage variable attenuators (VVAs) ensure accurate control for a wide range of applications. Our absorptive VVAs are ideal for designs where an analog dc control signal controls RF signals levels over a 30 dB amplitude range, while our monolithic VVAs feature low insertion loss, high IP3, and wide dynamic range, as well as a …
Voltage Controlled Variable Attenuator: PIN Diode ...
https://www.electronics-notes.com/articles/radio/rf-attenuators/pin-diode-variable-voltage-controlled-attenuator.php
Voltage controlled attenuators are often required within radio frequency designs to be able to provide a variable level output. These voltage controlled attenuators often use PIN diodes and provide a variable level of attenuation dependent upon the voltage applied. In any RF system, there is a need for a constant impedance and this design provides an acceptable match to 50Ω …
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