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How to Use the DG412DY-E3 Analog Switch to Improve the Switching of Analog Signals

The components, peripherals and other supported tools we use when working with an interface can make all the difference. When it comes to an analog switch, you have to be specific about what you are working with.

In this case, we have the DG412DY-E3 as one of the best analog switches you can work with. Not sure what an analog switch is? Continue reading this article to find out everything you need to know.

What is an Analog Switch?

Digi-Key defines an analog switch as a product used for “interconnecting or routing analog signals between multiple available signal paths.”

Texas Instruments adds that an analog switch is “extensively used for switching audio signals in battery-powered applications.”

From the above definitions, we can take out the main keywords to be “switching” and “analog signals.” The analog signals are also called the audio signals and if they are to be switched, it means that the path they are currently on might not be fully extensively. Therefore, the switching to other “signal paths” paves the way for these audio or analog signals to be extended to other places they are needed.

As Texas Instruments rightly pointed out, the signals are commonly spread or distributed to the battery-powered applications, such as mobile phones.

DG412DY-E3’s Analog Switching Series

Different analog switches belong to specific families or series and they tend to inherit some of the attributes peculiar to those series.

DG412DY-E3 belongs to the DG411 monolithic quad series of analog switches. These series are designed to offer a combination of low-error-switching and high-speed signal switching for the precision analog signals.

When we talk about monolithic quad analog switches, we are also referring to the series of analog switches that have the different power switches added or integrated into the same microchip.

Besides, a monolithic analog switch is bidirectional, meaning that it can “block the voltages of both polarities and still activate the on and the off currents for either of the directions/polarities.”

The DG411 Series of Monolithic Quad Analog Switches Support Combined Functions

This series supports a combined functionality of most important metrics, such as the high-speed and low-power applications.

When combined with the bidirectional capabilities, the DG411 monolithic quad analog switch series helps to facilitate the optimization of these applications, even when they require the least power.

Fast-Switching Conduction

In addition to supporting fast-switching of tON: 110 nanoseconds (ns), DG412DY-E3 also supports excellent conduction. The conduction in this case refers to the individual switch’s capability to conduct or work perfectly in each of the bi-directions.

Just like the switches can work well in both directions when they are turned on, that is also the same way they tend to block the input voltages when they are turned off. The blockage typically covers both the input voltages and the suppl levels of the switches.

Features of the DG412DY-E3 Analog Switch

Here are some of the core attributes we find impressive about this analog switch:

1. Error Signals

It makes sense that DG412DY-E3 has a feature in place to notify when the operations or functions are no longer moving on as they ought to.

The low signal errors and distortion feature helps to keep the digital circuit designers abreast of when the signals are low and when they are also distorted.

2. Wide Dynamic Range

The extent or range to which the DG412DY-E3 can be extended for the analog switching capabilities to be applied is wide enough.

3. Simple Interfacing

DG412DY-E3 is not like some other analog switch that tends to have a distorted or an unidealistic mapping. With the simple interfacing, it is easy to place the components where they are needed – and to make the relevant connections.

Product Attributes

Here are some of the attributes of the DG412DY-E3 analog switch:

Operating TemperatureBetween -40˚C and 85˚C
Multiplexer/Demultiplexer Circuit1:1
Voltage – Supply, Single (V+)5V to 44V
Charge Injection5pC
Switch CircuitSPST – NO
Current – Leakage (IS(off)) (Maximum)250pA
Maximum On-State Resistance350hm
Number of Circuits4
Switch Time (Ton, Toff) (Maximum)175ns and 145ns

DG412DY-E3’s Monolithic Quad Analog Switching Capabilities

We want to talk about some of the common attributes or benefits of using the monolithic quad analog switching design offered by DG412DY-E3.

Here are the things you need to know:

4. It Helps Put Everything in a Chip

By default, a switching regulator, of which an analog switch is one of it, can be configured in two major ways – monolithically and through a controller. While both switching methods work excellently, consumers now prefer the former for some reasons.

With the monolithic form of switching an analog switch, it makes it possible for on-chip integration of the different supported power switches, such as the MOSFETs.

5. Monolithic Analog Switches Save Spaces

One of the design downsides to working with a controller for analog switching is that it wouldn’t always be possible to integrate everything inside a single silicon chip. For example, the MOSFETs are typically manually-selected and that can take a lot of time.

Besides, the controller-based analog switching design doesn’t save spaces as much as the monolithic design does.

With the former (controller-based process), the power semiconductors and other important interfaces are to be positioned separately. The reverse is the case with the monolithic design that saves spaces via the positioning of the monolithic analog switching regulator at the top of the board; leaving the ground floor for the controller.

6. The Target Applications are Huge

Generally, the DG412DY-E3 monolithic analog switching regulator is primarily used with the communication devices, wearable devices, sensors and a wide range of consumer electronics.

To buoy the operations of these applications, the regulator has through the monolithic design, allowed for the offering of the highest precision levels possible. This is offered by a combination of leakage current, parasitic capacitance and charge injection.


You can count on DG412DY-E3 as one of the reliable analog switching regulators to boost the transmission of analog/audio signals in the consumer electronics, communication devices and selected sensors.