Variable gain amplifier Variable gain amplifier. A variable gain or voltage controlled amplifier is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated CV). VCAs have many applications, including audio level compression, synthesizers and amplitude modulation . A crude example is a typical inverting op amp... High Gain Adjustable Range, Wideband, Voltage Controlled ... Operating from ±5 V supplies, the device gain control voltage adjusts the gain from –40 dB at a 0 V input to 40 dB at a –2 V input. Increasing the control voltage above ground attenuates the signal path to greater than 80 dB. Signal bandwidth and slew rate remain constant over the entire gain adjust range. Analog Control VGAs | Analog Devices Analog Devices voltage controlled variable gain amplifiers provide continuous gain control over a wide dynamic range for a variety of audio and optical frequency bands. Our VGAs improve the dynamic range of a circuit by allowing users to adjust a signal’s amplitude in real time, which is invaluable for ultrasound, speech analysis, radar, wireless communications, and instrumentation related applications. Voltage controlled variable gain amplifier Amplifier ... The Voltage controlled variable gain amplifier circuit is built with ic op amp type LM101. The 2N5457 works as a voltage variable resistor having an Rds(on) max of 800 ohms. Because the differential voltage on the LM101 is within the low mV range, the 2N5457 JFET will have linear resistance over several decades of resistance giving a good electronic gain control. Variable Gain Amplifiers | Electronic Design Variable gain amplifiers (VGAs) are signal conditioning amplifiers with electronically settable voltage gain. There are analog VGAs and digital VGAs, or DVGAs. An analog voltage controls the gain... MT 073: High Speed Variable Gain Amplifiers (VGAs) ADL5391, can be used as a variable gain amplifier, as shown in Figure 3 below. The control voltage is applied to one input, and the signal to the other. In this configuration, the gain is directly proportional to the control voltage. AD8338 Variable Gain Amplifier Analog Devices | DigiKey The low power, 18 MHz VGA from Analog Devices is suitable for applications that require low noise. Analog Devices ' AD8338 is a variable gain amplifier (VGA) for applications that require a fully differential signal path, low power, low noise, and a well defined gain over frequencies from LF to 18 MHz. DIY Voltage Controlled Amplifier – HackMe What is a voltage controlled amplifier? Like it’s name suggests, it is an amplifier whose amplification, or gain, is controlled by a voltage. By varying a voltage input, we can change the amplitude of a signal, making it quieter and louder by supplying a smaller or larger voltage as a control signal. Variable Gain Amplifiers (VGA) | Analog Devices 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. Variable Gain Amplifiers | Programmable Gain Amplifiers ... 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. Wide bandwidth amplifiers with precision analog and digital gain control up to 4.5 GHz. Search VGAs. Variable Gain Amplifiers (VGA) | IDT A device that utilizes digtial control is called a digital variable gain amplifier (DVGA). This function is used in either the transmitter or receiver to add an adjustable gain element to the signal chain (either a little gain, or a lot of gain) by increasing or decreasing the attenuation value. MACOM Variable Gain Amplifiers Variable Gain Amplifiers At MACOM we design, manufacture, and support a family of Variable Gain Amplifiers (VGAs) for RF, microwave, and millimeter wave applications. Our VGA Product family covers frequencies from 5 MHz to 20 GHz. The Variable Gain Amplifiers are used in a variety of Network, mercial and Aerospace and Defense applications.

voltage controlled variable gain amplifier Gallery


variable gain amplifier archives

variable gain amplifier archives

voltage controlled variable gain amplifier ii circuit

voltage controlled variable gain amplifier ii circuit

switches - switching op-amp gain resistances

switches - switching op-amp gain resistances

esp

esp

rf and video u2013 page 5 u2013 electronic circuit diagram

rf and video u2013 page 5 u2013 electronic circuit diagram

september 2013

september 2013

ssm2167 datasheet and product info

ssm2167 datasheet and product info

136khz rx antennas and accessories

136khz rx antennas and accessories

rf and video u2013 simple circuit diagram

rf and video u2013 simple circuit diagram

variable dead band response - basic circuit

variable dead band response - basic circuit

audio level balance and tone control circuits

audio level balance and tone control circuits

lm386 voice audio power amplifier circuit design project

lm386 voice audio power amplifier circuit design project

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