DG445BDY-T1-E3

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The DG445BDY-T1-E3 is a four channel analog switch that operates from a single power supply in the extended temperature range. It is specifically designed with low on-capacitance (2 pF typical) and low leakage current (1 nA typical). This switch has three selectable logic inputs, two positive power supply rails, and is able to maintain excellent AC performance over a broad range of temperatures.

This device is ideal for multiple applications where isolation and kk-noise immunity is critical. It can be used in low level analog and digital circuits, as a digital isolator, for switching and isolation of analog, digital, RF and other signals. It is also suitable for high speed, low channel-to-channel, and low leakage multiplexing applications.

Application Fields

The DG445BDY-T1-E3 can be used in a variety of applications ranging from high speed data acquisition in large data centers to low power analog and digital circuits. It can be used as a low on-resistance switch in low frequency switching applications, as an isolator in digital circuits, and as a multiplexer for sampling high frequency signals. Additionally, it can also be used in applications requiring high switching speed, such as video and audio data processing.

It is also suited for low noise, low on-capacitance and low leakage analog switching, such as for electrical equipment testing, input and output proportional controls, and medical instruments. The extended temperature range of this device also makes it ideal for operation in high-temperature environments.

Working Principle

The DG445BDY-T1-E3 utilizes four independent switches to connect any one of its four inputs to any one of its outputs. The device’s logic inputs make it possible to selectively identify which inputs are connected to which outputs. Each switch has a guaranteed on-resistance of 5Ω, enabling it to enable reliable signal transfer between each input and output.

The switches can be individually enabled or disabled. This allows for easy setting of the device, where specific input and output pins may need to be connected or disconnected. The adjustable power supply range of 8V to 30V further ensures compatibility with most power sources.

The DG445BDY-T1-E3 has a low total off capacitance of 2.2 pF, making it ideally suited for data acquisition systems, medical instrumentation and other applications that require high speed and low noise analog input and output channels.

The device’s exceptional off-resistance and low leakage current also make it ideal for use in amplifier level shifting, DC and AC switching, and analog multiplexing applications.

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