PS391ESE

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PS391ESE is a 4-port analog switch that is designed, manufactured and marketed by Exar Corporation. The PS391ESE is a single-pole, double-throw (SPDT) analog switch with low on-resistance and low power dissipation. Its capability to pass signals from a wide range of amplitudes, coupled with its fast switching speed, make it ideal for a variety of applications including signal routing, data switching, and cross-point multiplexing.

In terms of its application field, the PS391ESE analog switch can be used for a wide range of applications, such as signal routing, data switching, multiplexing, and demultiplexing. It is also used in data acquisition and communications systems, as it is capable of handling very high-frequency signals with low distortion. Additionally, it is an ideal choice for applications that require high on/off switching speeds and low power dissipation.

The PS391ESE operational principle is based on the use of two transistors, one P-channel and one N-channel, which form a single-pole double-throw (SPDT) switch. When the control voltage applied to the transistor gates is high, the two transistors are “on”, which connects the common terminal to the left and right terminals. When the control voltage is low, the two transistors are “off”, resulting in the common terminal being disconnected from both the left and right terminals. The advantage of this switching mechanism is that it provides a fast switching speed, low on-resistance, and low power dissipation.

In terms of its multiplexer/demultiplexer applications, the PS391ESE can be used to multiplex up to four channels of signals, such as video or audio. The PS391ESE is also used in multiplexing and demultiplexing applications for cross-point switching for data routing, where signals may need to be interconnected without the need for additional components. By multiplexing one channel of signals, the PS391ESE can reduce the size and power requirements of the overall system. Similarly, when demultiplexing, it can also reduce the overall system size and complexity.

In conclusion, the PS391ESE is an ideal choice for a variety of analog applications that require fast switching speeds and low power dissipation. It can be used for signal routing, data switching, and multiplexing/demultiplexing applications. Additionally, its low power dissipation makes it an ideal choice for applications that require high on/off switching speeds and low power dissipation.

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