ISL84523IBZ-T

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ISL84523IBZ-T Application Field and Working Principle

The ISL84523IBZ-T is an analog switch IC from Intersil Corporation and is part of the company’s Interface – Analog Switches, Multiplexers and Demultiplexers product family. This switch features a high current switching capability, low ON resistance and very low charge injection. It can be used in a wide range of applications, including audio and video routing, data switching and routing, industrial automation and control, and power management. This article will discuss the application field and working principle of the ISL84523IBZ-T.

Application Field

The ISL84523IBZ-T analog switch is part of a family of switches that are particularly suitable for audio and video routing applications. They offer a low charge injection and high current switching capability, which makes them suitable for a range of applications that require low level switching of signals. This includes allowing signals to be routed while maintaining low distortion levels. As they offer low power consumption, they can also be used in battery powered applications that require a low power switch.

The ISL84523IBZ-T switch can also be used as a data routing component in industrial automation and control systems. This can include communication networks, where data signals need to be routed without distortions or crosstalk. The low power consumption and high speed of the switch make it suitable for these application, which often require the rapid transmission of data with low latency.

Finally, the ISL84523IBZ-T switch can also be used in power management applications. The device features a high current switching capability, which means it can be used to switch high voltage supplies with low power consumption. This is useful in applications such as electric vehicle charging, where it is important that the power supply is switched efficiently and with minimal power loss.

Working Principle

The ISL84523IBZ-T is a digital switch, meaning it can be operated by setting and read electrical signals, such as voltage or current. The device has two input channels, A and B, a common output, and a control signal. When both inputs are “low”, or at the same voltage, the output will also be “low”. This is called “low side switch operation”. In this scenario, the outputs of both channels A and B will be connected to the common output.

When one of the inputs is driven “high”, the output will also switch “high”. This is referred to as “high side switch operation”. The output from the channel with the high input will be connected to the output and the output from the other channel will remain low. This makes the device act as a single pole double throw (SPDT) switch, where one of the two channels is selected and its output is routed to the common output.

The control signal allows the switch to be enabled or disabled, allowing it to act as an analog switch as well. The switch can be set to operate as a low pass filter, high pass filter, gain setting element, or mute circuit. The control signal can also be used to control the ON resistance of the device, allowing it to be set for optimal signal routing. This can be set by programming the CTRL signal to the desired level, which will enable/disable the switch.

Conclusion

The ISL84523IBZ-T analog switch from Intersil Corporation is part of a family of analog switches, multiplexers, and demultiplexers. It has a high current switching capability, low ON resistance, and very low charge injection, making it suitable for a range of audio and video routing applications. It can also be used in communication networks, industrial automation and control systems, and power management applications. The device operation is controlled by two inputs and a control signal, which can be used to enable or disable the switch and to set the ON resistance for optimal signal routing.

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