DG408DY-T

Introduction

DG408DY-T is a quad SPST CMOS analog switch, manufactured by Intersil Corporation. This part is designed to work with a single +5V supply and is used in a wide range of applications in industry.

Application Field

DG408DY-T is mainly used in analog signal switching circuits such as automatic gain control, power management, protection systems and analog signal buffering, due to its low on-resistance of 6500Ω and low charge injection characteristics. As it can be seen in the following figure, its application fields range from consumer electronics to portable devices.

Due to its wide range of applications, DG408DY-T can be used in a variety of digital signal processing (DSP) systems and applications.

Working Principle

DG408DY-T can be used as a bidirectional analog switch, which means it can be used as both a multiplexer and a demultiplexer. As a multiplexer, it selects one of the multiple inputs and passes it to the output, while as a demultiplexer, it distributes one input signal among multiple outputs.

DG408DY-T is a quad SPST analog switch, which means that it has four single-pole-single throw (SPST) switches on a single chip. Each of the four switches can be independently controlled by a logic signal applied to the control pin. When the logic signal is low, the corresponding switch is closed, connecting the input terminal to the output terminal. When the logic signal is high, the switch opens, disconnecting the two terminals.

In addition to the SPST switches, the DG408DY-T also has four enable pins, which allow for the simultaneous opening and closing of all four switches. When the enable pin is high, all four switches will open and when the enable pin is low, all four switches will close.

Conclusion

DG408DY-T is a useful and versatile analog switch, which can be used in a wide range of applications. It is easy to control and is available in a variety of packages.