ADG3249BRJ-R2

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ADG3249BRJ-R2 Application Field and Working Principle

ADG3249BRJ-R2 is an interface technology device that is designed to serve as a bridge between two systems. This device belongs to the category of analog switches, multiplexers, and demultiplexers. It is a Quad SPST switch that is able to combine two separate signals and make them available on a single output line. It is mainly used to create an electrical connection between two sets of current electrical signals.

The ADG3249BRJ-R2 is designed to provide better isolation and higher signal strength than its predecessors.

Functional Specifications

The ADG3249BRJ-R2 performs multiplexing and demultiplexing functions with the help of its on-chip switches. This enables it to connect more than two systems simultaneously. It also provides a low bit error rate, which translates to higher signal fidelity over long distances.

It has an on-chip amplifier which amplifies the signals and makes them available on the output line with a higher amplitude. The ADG3249BRJ-R2 alsohas an impedance matching circuit, which matches the impedances of the switches, multiplexers, and amplifiers.

Features

The various features of the ADG3249BRJ-R2 include:

• Quad SPST switches with isolation up to 2500V
• Differential inputs and single-ended outputs
• Low On-resistance (1.2 Ω typical)
• Low On-resistance flatness (± 20mV typical)
• Wide common-mode input range (1.5V to 11V)
• High output drive capability up to 100mA
• High-speed switching (<5ns)
• Low propagation delay (<4.5ns)

Applications

The ADG3249BRJ-R2 is a highly versatile device that is used in a wide range of applications. Its main application includes:

• RS-485 transmitters and receivers
• Input protection circuit
• Small-signal multiplexers
• Video/audio multiplexers
• Ethernet switches

Working Principle

The working principle of the ADG3249BRJ-R2 revolves around its four switches and their respective circuits. The switches are connected to two separate signals that are fed into the device and then amplified on the output line.

When a signal is switched on, it is routed to the output line through its assigned switch and then amplified. The amplified signal is then sent to the required system for further processing. The other signals are routed in a similar manner and are amplified in the same way.

The ADG3249BRJ-R2 also includes an impedance matching circuit, which helps in achieving better signal integrity and reducing crosstalk between the signals.

The device is ideal for applications that require high-speed switching and low propagation delay.

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