The ADG432BR analog switch lets you send audio and video signals accurately. It is a quad SPST Analog Switch IC. It works with a ±15 V supply voltage. The on-resistance is low, up to 24 Ohms. It does not use much power. The 16-pin SOIC package fits in small spaces. People use this IC for audio and video signal routing. It is good when you need clean switching and reliable performance.
Key Takeaways
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The ADG432BR is a quad SPST analog switch IC. It can move audio and video signals well. It has low on-resistance of about 24 Ohms.
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This IC uses break-before-make switching. This stops short circuits when signals change. It helps the IC work well.
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It works with a supply voltage range of ±15 V. It uses little power, so it is good for battery-powered devices.
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The 16-pin SOIC package is easy to use in designs. It can replace older analog switches without problems.
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Trench isolation technology in the ADG432BR lowers leakage current and crosstalk. This keeps audio and video signals clear.
ADG432BR Analog Switch Overview
Function And Features
You can use the ADG432BR analog switch IC to control signals in your circuit. This device gives you steady switching for audio and video. The IC works with many supply voltages and uses little power. You get clear switching because the on-resistance is low. This means signals do not lose much strength.
Here are some important features you should know:
| Feature | Description |
|---|---|
| Break-Before-Make Switching | One switch turns off before another turns on. This stops short circuits when switching. |
| TTL/CMOS Logic Compatible Control | You can use TTL or CMOS logic levels to control the switch. This makes it easy to connect with digital parts. |
| Plug-In Replacement Capability | You can swap older devices for this IC without changing your PCB. |
| Industrial Temperature Range | The IC works from –40 °C to +85 °C. You can use it in tough places. |
| Trench Isolation | Each switch works alone. Trench isolation stops leaks and crosstalk. |
Tip: If you want to upgrade an old circuit, you can use the ADG432BR as a drop-in replacement. You do not need to change your board.
Quad SPST Configuration
The ADG432BR uses a quad SPST setup. You get four switches in one chip. Each switch lets you connect or disconnect a signal. This gives you choices for routing signals in your design.
You can compare the ADG432BR to other analog switch setups:
| Feature | ADG432BR | Other Configurations |
|---|---|---|
| On-resistance | Low | Changes with type |
| Leakage current | Very low | Often higher |
| Switching performance | Fast | Sometimes slower |
| Break-before-make switching | Yes | Not always there |
| Power consumption | Very low | Usually higher |
| Application versatility | High (audio, video, sensors) | Sometimes limited |
You get quick switching with this IC. The quad SPST design helps you route signals for audio, video, or sensors. You can use each switch by itself. This makes your circuit more useful.
Pinout And Package
Pin Diagram
You need to understand the pin configuration before you use the ADG432BR in your project. This IC comes in a 16-pin SOIC package. Each pin has a clear function. The table below shows the pin diagram for the ADG432BR:
| Pin No. | Pin Name | Function |
|---|---|---|
| 1 | IN1 | Digital control input for Switch 1 |
| 2 | D1 | Drain terminal of Switch 1 |
| 3 | S1 | Source terminal of Switch 1 |
| 4 | VSS | Negative supply voltage |
| 5 | GND | Ground reference |
| 6 | S4 | Source terminal of Switch 4 |
| 7 | D4 | Drain terminal of Switch 4 |
| 8 | IN4 | Digital control input for Switch 4 |
| 9 | IN3 | Digital control input for Switch 3 |
| 10 | D3 | Drain terminal of Switch 3 |
| 11 | S3 | Source terminal of Switch 3 |
| 12 | VL | Logic supply voltage |
| 13 | VDD | Positive supply voltage |
| 14 | S2 | Source terminal of Switch 2 |
| 15 | D2 | Drain terminal of Switch 2 |
| 16 | IN2 | Digital control input for Switch 2 |
Tip: Always double-check the pin configuration before you connect the IC to your circuit. This helps you avoid wiring mistakes.
Pin Description
You control each analog switch with a separate digital input. When you apply a logic high to IN1, IN2, IN3, or IN4, the matching switch closes. This connects the source and drain pins for that channel. You can use this setup for precise signal routing. The pin configuration makes it easy to add the ADG432BR to your design. You get fast, low-leakage switching for audio, video, or sensor signals. This IC works well in multiplexing, signal gating, and isolation tasks.
SOIC-16 Dimensions
The ADG432BR uses a standard SOIC-16 package. You need to know the physical size if you plan your PCB layout. The table below lists the main dimensions:
| Parameter | Min. | Max. | Notes |
|---|---|---|---|
| Body Width (E) | 3.80 mm (0.1497") | 4.00 mm (0.1574") | Overall package width |
| Body Length (D) | 9.80 mm (0.3859") | 10.00 mm (0.3937") | Overall package length |
| Body Height (A) | 1.35 mm (0.0532") | 1.75 mm (0.0688") | Package thickness |
| Lead Pitch (e) | 1.27 mm (0.0500") | – | Basic spacing (BSC) |
| Lead Width (b) | 0.35 mm (0.0138") | 0.49 mm (0.0192") | Individual lead width |
| Lead Thickness (c) | 0.19 mm (0.0075") | 0.25 mm (0.0099") | Lead thickness |
| Lead Length (L) | 0.40 mm (0.0040") | 0.25 mm (0.0098") | From seating plane |
| Lead Span (E1) | 5.80 mm (0.2284") | 6.20 mm (0.2440") | Distance across leads |
| Foot Length (L1) | 0.41 mm (0.0160") | 0.51 mm (0.0200") | Outer extension of leads |
| Lead Angle (θ) | 0° | 8° | Lead forming angle |
| Chamfer / Bevel | 0.25 mm (0.0099") | 0.50 mm (0.0196") | 45° corner cut |
You can fit the ADG432BR into most standard SOIC-16 footprints. This makes it simple to use in many circuit boards.
Specifications
Electrical Characteristics
You should know the main electrical facts before using the ADG432BR analog switch ic. This ic works with a supply voltage range of ±15 V. You can use it in circuits that need both positive and negative voltages. The digital control input lets you turn each switch on or off. You get fast and steady switching for your signals.
The table below shows some important electrical facts:
| Characteristic | Value |
|---|---|
| Supply Voltage Range | ±15 V |
| Leakage Current | Low |
You will see the leakage current is low. This keeps your signals clean and strong when the switch is off. The ic uses little power, so your device stays cool and saves energy. You can use the digital control input to control each channel with simple logic signals.
Note: Always check the supply voltage before you connect the analog switch ic. Using the wrong voltage can break the ic.
On-Resistance And Linearity
On-resistance is important for any analog switch ic. For the ADG432BR, the on-resistance is about 24 Ω. This low value helps signals pass through with little loss. You get better sound and picture quality in audio and video circuits. The on-resistance stays steady over the whole supply voltage range, so your circuit works the same every time.
You can see how the ADG432BR compares to other analog switch ic devices:
| Feature | ADG432BR | Similar Switches |
|---|---|---|
| On-resistance | ~24 Ω | Lower in some cases |
| Linearity | Excellent | Varies |
| Leakage current | Very low | Higher in some cases |
| Charge injection | Low | Higher in some cases |
This ic gives you excellent linearity. This means the output signal is almost the same as the input signal. You will not see much distortion, even with complex audio or video signals. The low leakage current also keeps your signals correct when the switch is off. The digital control input lets you control each channel exactly.
Tip: For the best results, keep your signal levels inside the recommended supply voltage range. This helps keep on-resistance low and linearity high.
Power Dissipation
You want your circuit to use as little power as possible. The ADG432BR analog switch ic uses little power. This makes it a good choice for battery-powered devices and systems that need to stay cool. The ic does not waste much energy when you use the digital control input to switch channels.
Here are some ways low power use helps you:
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Your device stays cooler, so you do not need extra cooling.
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You save battery life in portable products.
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You can use more analog switch ic devices in one system without overheating.
The low power use, low leakage current, and steady on-resistance make the ADG432BR a good choice for many signal routing jobs. You can trust this ic to work well in your audio, video, or sensor circuits.
Analog Switch IC Block Diagram
Internal Circuit
Inside the ADG432BR analog switch IC, there are four switches. Each switch has its own control input. You send a digital signal to a pin. The IC then connects or disconnects the matching analog path. This lets you choose where your signals go. The block diagram shows four switches. Each switch has a source and a drain terminal. Control logic sits between your digital input and the switches. This logic makes sure each switch turns on or off at the right time. You get quick and steady switching for audio or video signals.
Tip: The inside design keeps your signals clean. You do not have to worry about losing signal or mixing between channels.
Trench Isolation
Trench isolation makes the ADG432BR special. Each switch works by itself. The IC uses deep trenches with insulation between the switches. This stops electrical leaks and crosstalk. Your signals stay strong and do not mix with others. The design also has a buried oxide layer and a special backgate. These features make the IC more stable and lower unwanted effects called parasitics. You get very low leakage current and high reliability in your circuits. This is important when you need exact signal routing, like in audio mixers or test equipment.
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Benefits of Trench Isolation:
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Stops signals from interfering with each other
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Keeps leakage current very low
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Makes the IC reliable for a long time
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You can trust the ADG432BR to keep signals correct. Trench isolation keeps each channel separate, so your designs work well.
Applications Of ADG432BR Analog Switch
Audio Signal Routing
You can use the ADG432BR to control audio signals in your projects. This IC lets you pick and send sound from different places. For example, you might want to switch between a microphone and a music player. You use a simple digital signal to control each channel. The low on-resistance keeps your audio clear and strong. You will not hear extra noise or distortion.
Many audio devices need switches that work well. You can find this IC in mixers, amplifiers, and sound processors. You can make a system that lets you pick which input goes to the speakers. The quad SPST design gives you four switches in one chip. You can send signals from more than one source at the same time.
Tip: Use the ADG432BR if you want your audio signals to stay clean and free from interference.
Common audio routing uses:
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Home theater systems
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Audio mixing consoles
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Signal selection in recording equipment
Video Signal Routing
You can also use the ADG432BR for video signal routing. This IC helps you switch video sources like cameras or media players. You can send the right video signal to a screen or recorder. The low on-resistance and trench isolation keep your picture sharp. You will not see signal loss or crosstalk between channels.
Video systems often need fast and clean switching. You can find this IC in video switchers, surveillance systems, and broadcast equipment. You can pick which camera feed goes to the monitor. The analog switch ic works with both regular and high-quality video signals.
| Application | Benefit |
|---|---|
| Video switchers | Quick source selection |
| Surveillance setups | Reliable camera routing |
| Broadcast systems | Clean signal transfer |
Note: Always check your signal levels to get the best video quality.
You can trust the ADG432BR to keep your audio and video signals correct. This IC makes routing easy and dependable.
ADG432BR Analog Switch Alternatives
Similar Analog Switch ICs
You might need a different IC because the ADG432BR is not made anymore. Many engineers pick other analog switch ICs like the ADG439FBR, MAX313, or DG411. These chips have low on-resistance and switch quickly. You can use them for audio and video signals. Some options have more channels or come in smaller sizes. You should look at the datasheets to see if the pinout fits your project.
Tip: Always check the features and size before picking a new chip. This helps you avoid mistakes in your circuit.
Comparison Table
The table below shows how the ADG432BR matches up with other similar chips. This helps you pick the best analog switch IC for your project.
| Feature | ADG432BR | Closest Substitutes |
|---|---|---|
| On-Resistance (RON) | < 24 Ω | Similar low RON |
| Leakage Current | < 0.25 nA | Low leakage (nA range) |
| Switching Speed | tON < 165 ns, tOFF < 130 ns | Fast (sub-µs range) |
| Application Focus | General analog switching | Varies (e.g., higher channel multiplexing) |
You may see that other chips work almost the same. Some new chips switch even faster or are smaller. You should check if the control voltage and logic match what you need.
Finding Substitutes Through Distributors
You can ask distributors for help if you need a new chip instead of the ADG432BR. Here are some ways they can help you:
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Distributors can tell you if they have the ADG432BR or other chips.
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You can ask how long it takes to get new chips.
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Distributors can give you prices for replacement chips.
Note: The ADG432BR is not made anymore, so it can be hard to find. You should buy it soon if you see it in stock.
Common Challenges When Replacing ADG432BR
You might have some problems when you swap out the ADG432BR in old circuits. The table below lists common problems and what they mean for your project.
| Challenge/Limitations | Description |
|---|---|
| Obsolescence | The ADG432BR is not made, so it is hard to find. |
| On-resistance | Some new chips have even lower on-resistance. |
| Switching speed | New chips might switch faster. |
| Logic polarity | Some chips use different logic signals. |
| Package size | New chips might be smaller. |
You should check these things before you pick a new chip. This helps your circuit keep working right.
Pros And Cons
Advantages
You get many benefits when you use the ADG432BR analog switch IC in your project. This chip stands out for its reliable performance and easy integration. The table below shows the main advantages you will notice:
| Advantage | Description |
|---|---|
| Very low leakage current | You can use this IC in precision circuits. Signals stay clean and accurate. |
| Flat on-resistance | You get good linearity. Your signals do not lose strength or quality. |
| Break-before-make switching | You avoid channel shorting. This keeps your system safe and stable. |
| Ultra-low power consumption | You save battery life. Portable devices run longer and stay cool. |
| Drop-in replacement for older parts | You can swap this IC for DG411, DG412, or DG413. No need to change your board design. |
Tip: If you want a switch that works well in audio or video circuits, the ADG432BR gives you clean and reliable signal routing.
You will find this IC easy to use in many designs. The low leakage current helps you keep your signals pure. The flat on-resistance means your output matches your input closely. Break-before-make switching protects your equipment from unwanted shorts. You can upgrade older systems without redesigning your PCB.
Limitations
You should also know the drawbacks before you choose the ADG432BR for your project. Some users report these limitations:
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You may have trouble finding this IC because it is obsolete and not widely available.
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The on-resistance is about 24 Ω. Newer switches often have lower values, which can improve signal quality.
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Switching speed is moderate. Some modern chips switch faster and handle high-speed signals better.
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The logic polarity is fixed. You can only turn the switch ON with a logic high signal.
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The SOIC-16 package is larger than newer QFN options. You might need more space on your board.
Note: If you need a smaller package or faster switching, you might want to look at newer analog switch ICs.
You should weigh these pros and cons before you decide. The ADG432BR works well for many uses, but newer chips may offer better performance or smaller sizes.
Manufacturer Info
Manufacturer Details
It is important to know who made the ADG432BR analog switch IC. Analog Devices Inc. is the company that designed and made this chip. They are famous for making good analog and mixed-signal ICs. Many engineers use their products for signal routing, audio, and video jobs.
You can check the main facts in this table:
| Manufacturer | Part Number | In Stock | Description |
|---|---|---|---|
| Analog Devices Inc. | ADG432BR-REEL | 3825 | IC SWITCH SPST-NOX4 24OHM 16SOIC |
Analog Devices Inc. has made reliable analog switches for a long time. Their chips are used in many types of devices. The ADG432BR is one of their well-known products. Even though this IC is not made anymore, you might still find it from some sellers.
Note: Always check if the part is available before you start your project. Sometimes, discontinued parts are hard to find in stock.
Ordering Codes
When you search for the ADG432BR, you will see different codes. These codes help you pick the right chip for your needs. The most common code is ADG432BR-REEL. This means the part comes on a reel for machines to use. Some codes have extra letters to show the package or if it is lead-free.
Here is a simple guide:
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ADG432BR: This is the regular part in a SOIC-16 package.
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ADG432BR-REEL: This is the same part, but on a reel for machines.
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ADG432BRZ: This may mean the part is RoHS compliant and lead-free.
You should choose the code that matches your project. If you use machines to build your board, pick the reel version. If you build by hand, the regular part is fine.
| Manufacturer | Part Number | Description |
|---|---|---|
| Analog Devices Inc. | ADG432BR-REEL | Interface - Analog Switches, Multiplexers, Demultiplexers |
Tip: Always check the part number before you buy. This helps you get the right chip and avoid mistakes.
Datasheet
Datasheet Access
You need the official datasheet to use the ADG432BR analog switch IC. The datasheet has all the technical facts you need. You can find it online from trusted websites.
Always use the official datasheet. It helps you avoid mistakes and gives you the right information. The datasheet shows how to connect the IC and what voltages to use. It also lists the features you can expect. You will find safety notes and tips for using the chip in different circuits.
Tip: Download and save the datasheet before you start your project. This way, you can check important facts whenever you need them.
Reading Tips
When you open the datasheet, you might see many pages and lots of numbers. You do not have to read every word. Focus on the most important parts first. These parts help you learn how to use the ADG432BR in your circuit.
| Important Sections | Description |
|---|---|
| Specifications | Gives you the main performance facts and how the device works. |
| Pin Configuration | Shows the layout and job of each pin, which is needed for wiring. |
| Features | Lists special things the IC can do that may help your design. |
| Functional Block Diagram | A picture that shows how the inside works, helping you see how signals move. |
| Applications | Lists ways you can use the IC, giving you ideas for projects. |
Start with the specifications. This part tells you about voltage, current, and how fast it switches. Next, look at the pin configuration. This helps you wire the IC the right way. The features section shows what makes this IC different. The block diagram helps you see how signals move inside the chip. The applications section gives you ideas for real projects.
Note: If you get stuck, look at the diagrams and tables. They often explain things faster than reading long text.
You can trust the ADG432BR to send audio and video signals clearly. It has some important features. The on-resistance is low, so signals stay strong. Linearity is excellent, which means signals do not change much. Signal loss is very small, so you hear and see everything well. Switching is fast, so signals move quickly. This IC works well in multimedia systems.
This IC is not made anymore. You should look at other choices and compare them.
| Feature | ADG432BR | Alternatives |
|---|---|---|
| On-Resistance | Low | Changes |
| Switching Type | Break-before-make | Changes |
| Leakage Current | Low | Changes |
| Power Consumption | Very low | Changes |
| Compatibility | TTL/CMOS | Changes |
| Application Suitability | Precision Instrumentation | Changes |
To pick a good replacement, check the ADG432BR’s features. Compare it with other similar ICs. Make sure new chips work for your project. Always read the datasheet before you start designing.
Written by Jack Elliott from AIChipLink.
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