AD632TD

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The AD632TD is a representative of linear analog multipliers, dividers, and integrators from the Analog Devices family of components. The part is particularly suitable for use as a three-terminal linear multiplier/divider and has on chip temperature temperature compensation for a wide gain range. It is fabricated using a combination of bipolar transistors and field effect transistors in silicon monolithic form.

At its core, the AD632TD operates by allowing input signals to be applied at the X and Y inputs, with a corresponding output available at the VT pin. The amplifier\'s gain is determined by the ratio of X and Y inputs, while the output voltage is proportional to the multiplication of the X and Y inputs. The AD632TD is a voltage controlled voltage source and can thus be used in linear and switching applications as an active multiplier or divider.

Given its three-terminal design, the AD632TD is particularly well suited for a wide variety of applications including audio systems, digital circuitry, measuring devices, active filter designs, and instrumentation systems. As a voltage controlled, linear multiplier/divider, it can provide a predictable gain over a wide range of inputs.

The AD632TD can also be used as an integration device, allowing the addition of signals including the integration of independent signals, paralleling signals, or subtracting signals. It is primarily used in the design of active filters, allowing for the control of the amplitude of signals over time.

The AD632TD is designed to be driven by low voltage signals such as ±4V, ±5V and supply voltages of ±11V, ±15V. While its physical size is small, only 8.9mm x 8.9mm, the device has a wide frequency response of 0.15Hz to 250KHz.

The circuit topology used by the AD632TD is Single-Ended, Differential Inputs and Differential Outputs, meaning that that the two inputs and output are inherently balanced. This construction helps to maintain the accuracy of the input signals, reducing any spurious and unwanted noise that can affect the integrity of the device\'s performance.

The device also features high input impedance, low distortion, and wide dynamic range; perfect for audio systems, including loud speakers and headphone amplifiers. Aside from its use in linear applications, the AD632TD can also be used in switching configurations, allowing it to act as a voltage mixer, shifter, or modulator. Example applications that can benefit from its versatile performance include mobile phone handsets, motor drives, and DC/DC converters.

Overall, the AD632TD is an excellent device for linear and switching applications in need of a three-terminal multiplier/divider. Beyond its wide variety of application possibilities, the AD632TD also provides outstanding performance characteristics such as low distortion, wide dynamic range and wide frequency response.

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