LMS4684LD

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The LMS4684LD is an advanced analog switch contained in a low profile 8 pin SOIC package, making it suitable for designs where space is a concern. This part enables users to use a common bus design with various different analog ouputs. In terms of applications, the part is used in a variety of different fields, such as audio switching,medical monitoring, and data acquisition systems.

The LMS4684LD is a quad single pole/ double throw (SPDT) switch that enables users to switch up to four independent analog levels between two different sources. It is capable of switching voltages between -2.0V and +2.5V with a maximum CMOS supply voltage of +7.0V. With a maximum on resistance of 120 ohms, it is capable of carrying a maximum current of 20mA, which makes it suitable for audio switching applications. As for data rate, the LMS4684LD supports a frequency range of 1MHz to 20kHz, making it suitable for audio and medical monitoring applications.

The working principle of the LMS4684LD is based on the cross-coupling of the two SPDT switches in order to perform the switch operations. The LMS4684LD consists of two symmetrical SPDT switches, where one enables the switching of the analog voltage between the two sources and the other speaker side of the switch allows the user to choose which one of the two sources they want to use. The direction of the connection of the switch is controlled by an input control signal (EN1 and EN2). When the control signal is asserted, the switch enables the connection between the two sources, otherwise, the connection is disabled. Additionally, the LMS4684LD provides a self-protection function in order to prevent potential damages or short circuits.

The LMS4684LD is ideal for applications that require low cost and effective switching of analog signals. It is suitable for medical monitoring and data acquisition systems, where space is a concern, and high accuracy is a requirement. Additionally, its low RON (on resistance) makes it ideal for audio switching applications. The LMS4684LD is also highly reliable, which makes it a suitable switch for many different applications and industries.

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