analog multiplier

By contrast, in what is generally considered to be a true analog multiplier, the two signal inputs have identical characteristics.

In this case the analog multiplier may be considered to be a voltage controlled amplifier.

Block is an Analog multiplier.

Phase detector is an analog multiplier.

Other computing elements include analog multipliers, nonlinear function generators, and analog comparators.

As digital technology advances, the use of analog multipliers tends to be ever more marginalised towards higher-frequency circuits or very specialized applications.

Analog multipliers and dividers are used to offer brief gain control, radiometric function, or continuous energy measurement, with surprising accuracy.

In most cases the functions performed by an analog multiplier may be performed better and at lower cost using Digital Signal Processing techniques.

For example, in early digital multimeters, true RMS functions were provided by external analog multiplier circuits.

The ARP 2600's Ring Modulator was actually a moderate-accuracy analog multiplier.

Nonlinear electronic components that are used as mixers include diodes, transistors biased near cutoff, and at lower frequencies, analog multipliers.

In electronics, an analog multiplier is a device which takes two analog signals and produces an output which is their product.

A long-tailed pair can be used as an analog multiplier with the differential voltage as one input and the biasing current as another.

The equations governing a phase-locked loop with an analog multiplier as the phase detector and linear filter may be derived as follows.

One way to generate such effects is through deliberate intermodulation in a non-linear device, but may also be achieved without intermodulation by an analog multiplier.

Some Philips dual-trace analog oscilloscopes had a fast analog multiplier, and provided a display of the product of the input channels.

An electronic analog multiplier can be called by several names, depending on the function it is used to serve (see analog multiplier applications).

Although analog multiplier circuits are very similar to operational amplifiers, they are far more susceptible to noise and offset voltage-related problems as these errors may become multiplied.

Although analog multipliers are often used for such applications, voltage-controlled amplifiers are not necessarily true analog multipliers.

Several voltage and current mode continuous-time filters, oscillators, analog multipliers, inductance simulators and a PID controller have been developed using this active element.

Such devices, called analog multipliers, exist and are used as mixers at lower frequencies, but do not function well at the RF frequencies where heterodyning is usually used.

Applications specific to a true analog multiplier are those where both inputs are signals, for example in a frequency mixer or an analog circuit to implement a discrete Fourier transform.

If one input of an analog multiplier is held at a steady state voltage, a signal at the second input will be scaled in proportion to the level on the fixed input.

In the linear controlling regime the RO becomes an analog multiplier: the current through the photoresistor is proportional to the product of the voltage across the photoresistor and the control voltage.

A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a voltage signal which represents the difference in phase between two signal inputs.