DG412CJ+

The DG412CJ+ is an Analog Switch, Multiplexer and Demultiplexer digital integrated circuit for a wide range of applications. The device provides one low impedance channel for each comibination of switches, muxs and demuxs it provides. It is composed of a linear array of four precise, low on-resistance single pole two-throw switches. The devices are packaged in a very small 8-pin plastic dual in line (DIP).

Applications

The DG412CJ+ is a versatile digital integrated circuit for a wide range of analog switch, multiplexer and demultiplexer applications. The device can be used to switch between two analog signals without introducing any distortion, such as by selecting an appropriate range of resistance values and damping resistance. It can also be used to switch between multiple analog signals, providing high quality signal routing. Being a member of the DG4xx family of devices, the DG412CJ+ is ideal for applications such as A/D and D/A conversion, sample and hold, analog switches, multiplexers, demultiplexers, and high speed data transmission.

The DG412CJ+ is highly suitable for switching the display of a wide variety of displays such as LCD, CRT and OLED, where it requires a fast response without introducing any noise or interference. The DG412CJ+ is also well suited for professional audio applications such as signal mixing, level control, and signal routing.

Working Principle

The DG412CJ+ is composed of four individual single-pole double-throw switches that are connected in series. Each switch is composed of two transistors, one n-channel and one p-channel, which are used to control the flow of charge from the source to the drain. According to the state of the control line, the two transistors are adjusted in order to provide the required switching current. The device also includes an optical isolation diode that is connected to the control line, providing additional signal isolation.

The DG412CJ+ has two different control signals; the clock signal, which provides the synchronization of the switching operations, and the data signal, which provides the low or high level for each of the switches. When the clock pulse is high, it enables all the switches, and when the data signal is high, it sets all the switches to the high resistance state. When the clock pulse is low, the device transfers the data signal to the drain, and the low resistance state is selected. The low resistance path is then available, while the previous high resistance path is cut off.

Conclusion

The DG412CJ+ provides a very cost effective solution for applications requiring a highly reliable, low on-resistance analog switch, multiplexer and demultiplexer. With its high input impedance, low output capacitance and low power dissipation capabilities, it is well suited for both high-speed and low-power switching applications. The device\'s unique design results in a compact 8-pin DIP package, consuming minimal PCB space.