HDMI is a digital video interface standard for transferring uncompressed video and audio data for video cameras, capture devices, and digital television. HDMI cables can transmit both video and audio, making them a convenient way to connect your device to a TV.
But how does the whole operation take place? It happens because of printed circuit boards (PCBs). We have printed circuit boards that are specifically designed for HDMIs.
Well, this forms the basis of the article. We are going to explore all the important details that you need to know about HDMI PCB.
What is HDMI PCB?
An HDMI PCB is a printed circuit board specifically designed for HDMIs. The main purpose of the HDMI PCB is to help in transferring the video and audio data from your devices to the HDMI cable. It also helps in controlling the video and audio signals.
HDMI cables have been used for years now as a ubiquitous way to connect devices like mobile phones, laptops, televisions, game consoles, and even digital cameras.
What are PCBs?
PCBs have essentially printed circuit boards that have circuits etched on them. These circuits can be electrical or electronic components like transistors or diodes. These components are then connected via wires through a process referred to as soldering.
The connections are made using solder to be easily plugged into each other without causing any damage or wear and tear on either the wire or the component itself. Keep in mind that these boards are used in various applications where components need to be electrically connected.
What is the role of PCBs in HDMI?
PCBs are used to connect the various components of an HDMI cable. The copper wires used in the HDMI cables are very thin and fragile. This is why they need to be connected properly to ensure that they do not break or get damaged.
PCBs also help connect all of the components and provide a way for them to be easily plugged into each other without causing any damage or wear and tear.
What are the elements of an HDMI cable?
The HDMI cable comprises three parts: the HDMI connector, the central conductor, and the shield.
The HDMI connector is a small circular plastic piece with a metal clip on one side and a pin. The metal clip is used to hold the cable in place and secure it in place when you are not using it.
The pin is used to connect with another device or computer so that you can use it to transmit signals from one device to another.
The central conductor of an HDMI cable is made of very thin copper wires. These copper wires are arranged in pairs, allowing them to carry signals at different frequencies at different distances. The copper wires are placed inside a plastic covering called an inner sheath or cladding.
It also acts as an insulator between each pair of copper wires and prevents them from shorting out with each other when they come into contact with each other. The inner sheath is surrounded by a plastic PVC jacket which protects it from damage and makes it waterproof.
The shield of an HDMI cable is made of a plastic covering placed around the copper wires. This prevents any radio frequency signals that are not intended to pass through the cable from doing so and protects them from interference. It also prevents outside signals from damaging the copper wires inside the cable, which could cause them to overheat or fail.
Now that we have seen the primary components of HDMI, where does PCB come in?
The copper wires inside the cable are simply connected to pins on the PCB. The pins are connected together, which creates an electrical path from one pin to another pin.
The copper wires inside an HDMI cable are actually quite thin, which means that they do not have much room for signal routing.
This means that you ensure that all of your signal routings through your HDMI cables and connectors do not interfere with other signals or signals you do not want passing through your cable (such as audio).
HDMI cables can be very long, and they can be placed in all sorts of different places within your home entertainment system setup. It is also essential that you choose a high-quality cable, as cheap cables often do not provide a good connection or will fail in the future.
Classifying HDMI PCBs according to speed
We can group the HDMI PCBs according to their speeds of data transfer. Here are the most common groups under this classification.
-Standard HDMI PCBs: These HDMI PCBs support moderate speeds for data transfer. They boast of a capacity of up to 4.95GB/s and have a rated resolution of between 720 to 1080 pixels.
-Ethernet standard HDMI PCB: This is just like a standard HDMI PCB cable, only that it is purely curated for the ethernet connection
-High-speed HDMI PCB: These HDMI PCBs support the highest speeds for data transfer and can transmit data at up to 10.2 GB/s. They support 4K resolution and have a bit rate of up to 3840×2160 pixels.
-Ultra-high-speed HDMI PCB: These HDMI PCBs are capable of transmitting data at rates up to 20 Gb/s and support resolutions as high as 4096×2160 pixels.
What are HDMI PCB connectors?
We have just seen the HDMI PCB cables and how they are used. What about the connectors?
HDMI PCB connectors are a small section of the cable that connects the two ends of the cable. Most of them are made from gold-plated copper and are used to connect HDMI cables.
These connectors are spring-loaded and have a strain relief mechanism.
It is easy to break these connectors, especially if you don’t handle them with utmost care.
Broken HDMI PCB connectors can cause damage to your equipment due to electrical shorting between the two cables that connect them. This is why you should check if your cables have been properly connected before using them.
Also, ensure that the HDMI connector is properly wired. It is also possible to get an electrical short in your equipment due to poor wiring or damaged HDMI PCBs or male-to-male adapters and other kinds of connectors (such as VGA, DVI, etc.).
Why should I care about the HDMI PCB connectors? One of the motivation factors is quality data. These connectors can guarantee you HD-quality video and audio data.
The HDMI PCB connectors come in different shapes and sizes depending on the HDMI cables and application areas.
What are the specifications for the HDMI PCB?
Before buying HDMI PCB, it is vital to keep your eyes on its specifications. They include;
HDMI PCB speed
This refers to the maximum data throughput your cable can perform. A high-speed HDMI PCB will allow you to transmit high-resolution video and audio signals at 5 gigabits per second (Gbps). This is the maximum speed that the cable can handle.
HDMI PCB bandwidth
This refers to the frequency range of the HDMI signal.
The cable will transmit all signals in a band of frequencies between 0 and 10 GHz.
HDMI PCB conformance
This refers to the type and certification of the HDMI cable. A high-quality HDMI Cable has been tested to ensure that it is compatible with most types of equipment, including HD projectors, HDTVs, Blu-ray players, DVD players, game consoles, and other digital devices.
HDMI PCB connector shape or size
Some HDMI cables are made from a particular type or shape of the connector. Some are wider than others, some are thicker than others, and some are longer than others. You should buy a cable that fits your needs and your equipment. In this way, you will get the best possible results for your money and save on unnecessary expenses for new cables.
Here is an example: if you buy a longer HDMI cable, it will be able to carry more data and hence will be able to transmit a higher resolution. However, if you buy a shorter cable, it would not carry as much data and hence will not be able to transmit the same resolution.
HDMI PCB material type or construction
The materials used in constructing an HDMI cable include copper wires, plastic insulation, and plastic connectors. The construction of the cable also determines how durable it is.
High-quality HDMI cables are manufactured from thick copper wires that are shielded by a plastic layer to prevent external interference and signal degradation, and signal loss.
HDMI PCB data rate or the speed of the data transmission
Its length and its type determine the data rate of an HDMI cable. The longer a cable is, the more data it can carry. This characteristic is observed in both HDMI 1.3 and HDMI 1.4 cables as they are capable of supporting higher data rates than their predecessors, which has enabled them to transmit HDTV signals with more precision and clarity.
HDMI PCB signal type or application
HDMI cables may transmit audio-visual signals that include TV broadcasts, digital audio signals such as DVD audio, computer multimedia content, and more. HDMI cables are also used in home theater systems to connect different devices, such as AV receivers with DVD players or gaming consoles such as Xbox 360 or PlayStation 3.
HDMI PCB impedance
The impedance of an HDMI cable is measured in ohms at the cable’s output, and it is also referred to as “return loss.” The higher the impedance, the less noise is sent through the cable. For example, a 50-ohm cable transmits less noise than a 100-ohm cable.
What are the Advantages of HDMI PCB?
Are you planning to buy an HDMI PCB? Here are the top benefits that you stand to gain.
Easy to handle and use
HDMI PCBs are easy to handle and use. The cable has a small size which makes it easy to store. If you have a lot of HDMI devices, you can connect them without worrying about the cable’s size. You can also use the HDMI PCB with your other devices.
HDMI PCB is cost-effective because it has lower prices than other cables, and if you’re buying in bulk, you will save more money. HDCP is included in all HDMI PCBs, so there’s no need for extra cables or components when connecting devices.
HDMI PCBs are made to be consistent in performance, and they do not change with time, unlike the other types of cables. It is resistant to electromagnetic fields like those generated by TVs or amplifiers, so there’s no need to worry about interference from nearby electronics that could affect the quality of the signal.
HDMI PCBs have a wide compatibility with any type of device, and they do not need to be connected to a specific device to work. This makes them reliable and easy to use. You can connect your devices together through HDMI cables without buying different cables for each one.
Excellence Signal integrity
The HDMI standard has a high level of signal integrity, and it ensures that the signal transfers to the other device without distortion. It also protects your devices from interference from other devices so that you can use it with any device.
The HDMI standard is flexible in that you can use it for both audio and video signals. You don’t need an audio cable or a video cable for your devices to connect through HDMI PCBs. You can connect just about anything that supports HDMI with this type of cable because they are not limited.
What are the application areas of HDMI PCB?
Regardless of the type, HDMI PCBs have a wide range of applications in different industries, including;
-Video game consoles
-and many more
I hope this comprehensive guide has given you a better understanding of the benefits of HDMI PCBs and how they can help you. I would also like to advise that you look into buying your cables from one of the many reputable companies that sell HDMI PCBs. At ICRFQ, we can connect you to such HDMI PCB manufacturers in China.
If you want to find more Electronic Components Distributors, please check out the following articles: