DG387AAK/883B

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The DG387AAK/883B is an interface device designed for a variety of applications and it\'s based around the concept of analog multiplexers, demultiplexers and switches. The specific details of what the device can do depend on the specific package type, but the core capability allows for switching, selecting and routing of digital and analog signals within the device.

In terms of its application field, an important role of the device is in data acquisition systems, where the main purpose is to direct signals from a variety of input sources to an ADC or multiple ADCs. Its flexibility makes it well suited to both serial and parallel data collection.

For industrial control, the application field is to control the input and output configuration of digital registers. A given digital register can be “split” in order to control both input and output values independently. This is useful in those situations where it is desirable to have discrete control of inputs and outputs, as well as to preserve precious resources by opening and closing only the necessary connections.

In terms of its working principle, the device is designed to provide an electrically isolated barrier between a source and destination in amplitude limited, high speed switch mode. Its configuration consists of four analog multiplexers and four analog demultiplexers. The multiplexers produce a 4-bit parallel data stream from a single source and can be operated in either 2-bit or 4-bit data mode.

The demultiplexers enable routing of the data stream to multiple destinations and enable selection of any of the multiplexers’ outputs in either 2-bit or 4-bit mode. A bidirectional active switch with series mode regulation allows switching between lower and higher rail voltages with minimal power loss.

In summary, the DG387AAK/883B is an interface device suitable for a variety of applications, including data acquisition systems, industrial control, and the control of input and output configurations of digital registers. Its main feature is the use of 4 analog multiplexers and 4 analog demultiplexers and a bidirectional active switch with series mode regulation.

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