ISL84053IAZ-T7A Integrated Circuits (ICs)

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ISL84053IAZ-T7A is an integrated circuit comprised of a three-stage multiplexer and a three-input differential amplifier. It is a silicon-based analog multiplexer or signal switch with an exceptionally wide signal bandwidth and low insertion loss. It is well suited for applications where signal signal attenuation and distortion need to be minimized, such as signal routing and signal splitting. This particular device is available in an 8-pin mini-DIP (dual in-line package).

Application Field

The ISL84053IAZ-T7A is commonly used as channel selectors, signal combiners and splitters, and digital-to-analog (DAC) outputs. In communications systems, this device can be used to route relatively high frequency (> 1000 MHz) digital signals. For example, the ISL84053IAZ-T7A can be used in fiber optic systems to route optical signals carrying data from one network to another. The device is also suitable as part of an interface for providing high-resolution data conversion in both optical and RF applications.

In instrumentation applications, the ISL84053IAZ-T7A can be used to multiplex input signals from sensors, providing a single output. This allows for the selection and combination of several signals from various sources, providing a single output signal. This capability is particularly useful for applications such as automatic gain control, where several input signals must be combined in order to control the final output.

Working Principle

The ISL84053IAZ-T7A consists of a three-input differential amplifier and a three-stage multiplexer. The differential amplifier provides a high dynamic range, high immunity to common-mode transients, high linearity, and high input impedance. The three-stage multiplexer is used to select one of the inputs, and route the selected signal to the output of the device. Each stage of the multiplexer is electrically coupled, forming a signal path from the inputs to the output of the device.

The ISL84053IAZ-T7A has two control inputs, which are used to select the desired input. The two inputs are named SELECT₁ and SELECT₂. When SELECT₁ is set to a “1”, the first stage of the multiplexer is active and the signal from the first input is routed to the output. Similarly, when SELECT₂ is set to a “1”, the signal from the second input is routed to the output. The third input is the common (ground) input, and is always active.

The ISL84053IAZ-T7A also has two enable inputs, named ENABLE₁ and ENABLE₂. When ENABLE₁ is set to a “1”, the second stage of the multiplexer is active and the signal from the second input is routed to the output. Similarly, when ENABLE₂ is set to a “1”, the signal from the third input is routed to the output.

Once the inputs have been selected, the signals are routed to the output of the device through the three stages of the multiplexer. The multiplexer stages provide an adjustable signal path from the inputs to the output, allowing for the selection of various signal levels and frequencies. This makes the ISL84053IAZ-T7A a highly versatile device, suitable for a wide variety of signal routing applications.

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