DG442LDJ-E3

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The DG442LDJ-E3 Analog Switches are part of the DG44xx and DG45xx series of monolithic CMOS analog multiplexers and switches developed by Texas Instruments (TI). This series of devices provide a wide range of options for multiplexing digital or analog signals. Depending on the version of the device, they can be configured to multiplex/switch up to eight or sixteen digital or analog signals. The DG442LDJ-E3 is a sixteen-channel digital/analog switch.

Features

• Compatible with supply voltage ranging from +2.7V to +18V
• Supports analog signals from 0V to Vms
• Designed for low power operation
• Low on-channel capacitance: 5.5pF max.
• Low off-channel leakage current: 0.1nA max.
• Low switching times: < 30ns max.
• High signal-to-noise ratio: 95dB min.
• Available in a 16-pin low-profile MicroPak package

Applications

The DG442LDJ-E3 offers a range of multiplexing and switching solutions for digital or analog signals. These solutions make the device ideal for applications such as audio and video switching, data routing, signal conditioning, level shifting, and AD/DA converter interfacing.

In addition, its low on-channel capacitance and low off-channel leakage current make it suitable for sample-and-hold, filtering, ring modulation, and other analog operations which require high isolation between signals. It is also suitable for multiplexing signals with high output voltage swings and low-power operation.

Working Principle

The DG442LDJ-E3 is a sixteen-channel analog/digital switch. It consists of two parts: a switch array and a control logic. The switch array consists of two sets of switches, each with eight channels. Each set has one common terminal and seven other terminals which can be connected to either the common terminal or to any one of the seven digital or analog signals. The control logic is responsible for controlling which signals are connected to which terminals. It receives an address from the user and switches the appropriate channels in order to connect the desired signals.

The DG442LDJ-E3 is powered by a supply voltage ranging from +2.7V to +18V. The device provides low on-channel capacitance and low off-channel leakage current, as well as high signal-to-noise ratio and fast switching times. The device is available in a sixteen-pin low-profile MicroPak package.

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