ISL43681WR5345

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Analog switches, multiplexers, and demultiplexers are basic, yet vital, components of most electronic applications. As such, designers have continuously looked for ways to improve upon the traditional design of these components with regards to electrical performance, size, and cost. The ISL43681WR5345 is an advanced component for these applications that provides high performance, reliable operation, and cost efficiency. This article will discuss the application field of the device and its working principle.

Application Field

The ISL43681WR5345 is a switched array for any analog application requiring multiplexers, demultiplexers, or a combination of both. It provides excellent on-resistance performance, low power dissipation, a fast switching speed, and a low off-capacitance. These features make the device particularly suitable for multiplexed data bus switching applications. It can also be used in audio frequency, video frequency, and RF switching applications.

Working Principle

The ISL43681WR5345 consists of two independent, quad-channel, complementary metal-oxide-semiconductor (CMOS) analog switches. Each switch features an integrated triple-well EPAD structure with short-channel metal-oxide-semiconductor (MOS) transistors for extremely low on-resistance. This architecture allows for a low input capacitance to maximize dynamic performance. Additionally, the device has an off-state high-impedance input stage which facilitates improved linearity and dynamic performance.

The device is controlled by two separate logic inputs, each controlling the two channels of one of the switch quadrants. With a low voltage supply of 3.3V, the maximum on-resistance for the device is less than 10Ω. Additionally, its off-state capacitance is only 5pF, allowing for fast switching speeds with minimal distortion.

Overall, the ISL43681WR5345 is a reliable and efficient analog switch array, which offers improved performance and low power consumption over traditional solutions. It is suitable for multiplexed data bus applications, as well as audio, video, and RF switching.

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