ADV7123JST240 Video DAC: Datasheet, Features, Applications, and Alternatives

You see smooth and clear pictures on your TV or phone because of parts like the ADV7123JST240. This high-speed video dac turns digital video signals into analog signals for screens. As video gets better and moves to high-definition, more devices need these converters. The world market for digital-to-analog converters was about $2.3 billion in 2023. Video products like set-top boxes and gaming consoles make people want more of these parts. You also find high-speed video converters in multimedia players, communication tools, and test equipment.

Key Takeaways

• The ADV7123JST240 changes digital video signals into analog ones. This is important for things like TVs and gaming consoles. This chip has a triple 10-bit DAC design. It helps show colors correctly and makes pictures look smooth. There is very little flicker in the images. It can handle high resolutions up to 1600×1200. The pixel rate is fast at 240 MHz. This is good for great graphics and video. Always look at the datasheet for key details and features before using the ADV7123JST240 in your projects. If you cannot find the ADV7123JST240, you can use the ADV7125 or DAC1000. These chips have similar features.

Overview

What is it?

The ADV7123JST240 works like a bridge. It connects digital and analog signals. This chip changes digital video into smooth analog signals for screens. You can find it in things that show bright and clear pictures. These include TVs, monitors, and projectors.

The ADV7123JST240 has a triple 10-bit DAC design. It uses three digital-to-analog converters. Each one is for a color: red, green, or blue. Each color gets its own 10-bit data spot. This lets the chip handle all colors at once. The chip makes colors look real and images look sharp. It does this by working with each color carefully. The voltage reference inside keeps the output steady. Low glitch energy helps the picture stay clean. This means you do not see flickers or noise.

When you look at the ADV7123JST240 and older video DACs, you see some big changes:

Feature/Characteristic	ADV7123JST240	Previous Generations
Speed	240 MHz	Slower speeds
DAC Architecture	Triple 10-bit DAC	Often less efficient
Power Consumption	Higher at full speed	Lower
Integrated Features	Built-in blank/sync	Needs extra components
Availability	Limited, obsolete	More available
Temperature Range	Industrial grade	Varies
Application Versatility	Broad support	More limited

Tip: The ADV7123JST240 gives you better performance and more features. But it is harder to find now because it is obsolete.

Core Specs

You should know the main technical facts before picking this chip. Here are the most important specs:

Specification	Details
Voltage Range	Single 5 V (or 3.3 V in some modes)
Power Consumption	Low power and standby modes available
Supported Resolutions	Up to 1600×1200 with smooth refresh
Pixel Rate	Up to 240 MHz

You can use the ADV7123JST240 in many high-resolution video systems. Its fast pixel rate and triple 10-bit channels help make sharp, bright images. The chip works with both 5 V and 3.3 V power. This means you can use it in different circuits. If you need a video DAC for tough jobs, this chip gives you the speed and quality you need.

Video DAC Features

Digital to Analog Converter Function

A digital to analog converter changes digital video into real images. The ADV7123JST240 acts like a bridge. It connects your device’s digital parts to the analog screen. This chip takes digital video and makes three analog signals. Each signal is for one color: red, green, or blue. With three channels, you see full-color pictures on your display.

The ADV7123JST240 uses a 10-bit digital to analog converter for each color. This gives you 1,024 levels for every color. You get more shades and smoother color changes. The chip can work at a pixel rate up to 240 MHz. This fast speed lets you watch high-quality color graphics with no lag or flicker.

Here is a quick look at how the main features help your video:

Feature	Description
Channels	3-channel configuration for RGB output
Bit Depth	10-bit for accurate color reproduction
Maximum Pixel Rate	240 MHz for high-speed video signal processing
Resolution Support	Up to 1600×1200 for high-quality analog display
Glitch Energy	Low glitch energy for minimal distortion and artifacts
Applications	Used in CAD/CAM, broadcast, and medical imaging

Note: The digital to analog converter in this chip gives you clear, sharp, and colorful images. You get better results in both graphics and video.

Performance Highlights

The ADV7123JST240 is special because it is fast and shows colors well. You get a digital to analog converter that works with high-resolution graphics and fast images. The 10-bit resolution gives you many shades for each color. This makes your pictures look smooth and real.

• 10-bit color means more shades. You see smoother color changes and better colors.

• You do not see banding, which makes images look blocky.

• The chip gives you a bigger dynamic range. Skin tones and nature scenes look more real.

• Artists and designers have more choices when making graphics.

You also get a fast pixel rate. The chip can handle up to 240 million pixels each second. This speed helps you see sharp images, even with hard graphics or video jobs. The ADV7123JST240 works well in CAD/CAM, broadcast, and medical imaging. These jobs need great graphics and fast video.

Here is how the ADV7123JST240 compares to other video DACs:

Feature	ADV7123JST240	Other Video DACs
Speed	Up to 240 MHz	Up to 330 MHz (faster)
Accuracy	Good linearity	Varies by model
Glitch Energy	Minimized	Varies
Color Reproduction	Excellent RGB matching	Varies

The 240 MHz pixel rate helps support high resolutions. You get images that look professional. This makes the chip great for graphics, video editing, and high-end screens.

Feature	Benefit
Pixel Rate	Supports up to 240 MHz for high resolutions
Image Quality	Enables professional-grade image rendering
Applications	Ideal for CAD/CAM, broadcast, and medical imaging systems

Tip: If you need a digital to analog converter for graphics or video, the ADV7123JST240 gives you the speed and color depth you need for top results.

Applications

Consumer Devices

You can find the digital to analog converter in many things you use. When you watch TV or play games, the video dac changes digital video into signals for your screen. This helps you see smooth pictures and bright colors. Phones, set-top boxes, and media players also use this chip. The digital to analog converter makes shows and games look clear and real. You get better pictures because the video dac handles fast video signals. This means your screen has less flicker and more detail.

Industrial Uses

Many jobs need digital to analog converter chips that are fast and accurate. You see these in:

• CAD/CAM systems for design and modeling

• Broadcast tools for sending clear video

• Medical machines that show detailed scans

• Communication systems that make video signals for RF transmitters and baseband signals

These uses need the chip to work very well. The digital to analog converter must keep up with fast data and show images right away. People count on these systems for important work, so the video dac must always give good results.

PCs and Development

You use the digital to analog converter in PC graphics cards and development boards. The ADV7123JST240 helps turn digital video into analog signals. This is needed for CRT monitors and other analog screens. You get sharp images and true colors, which is important for work. The digital to analog converter also helps rebuild video signals from digital sources. This makes it a good pick for regular analog video systems and test displays. Many computer and development tools need high-quality video from the dac.

Note: The digital to analog converter often works with other video systems. This gives you a full way to handle digital video and analog screens.

Datasheet & Alternatives

Accessing the Datasheet

You should always look at the datasheet before using a digital to analog converter in your project. The datasheet for the ADV7123JST240 gives you all the important facts you need. It tells you how the chip works, what power it needs, and how it connects to other parts. This helps you avoid mistakes and makes your project better.

When you read the datasheet, check for these main features:

Feature	Description
Built-in Voltage Reference	Gives a steady 1.235 V reference. You can use an outside reference if you want.
Single-Supply Operation	Runs on one 5 V or 3.3 V supply. This makes your power setup easier.
Video Compatibility	Works with RS-343A and RS-170 standards. Good for broadcast video tools.
Power-Saving Mode	Saves power when not in use. Helps your project use less energy.
Low Glitch Performance	Keeps video signals clear with little distortion.
Industrial Temperature Range	Works from –40 °C to +85 °C. Reliable in many places.

Tip: Always look at the pinout and timing diagrams in the datasheet. These help you connect the digital to analog converter the right way.

You can find the official datasheet on the maker’s website or trusted electronics sellers. Use the search bar and type the part number to get the newest version.

Alternative Video DACs

Sometimes you cannot find the ADV7123JST240 because it is not made anymore. You may need to look for other digital to analog converter choices. Many companies make chips that work with digital video and analog screens.

Here are some other options you can try:

• Analog Devices ADV7125: This chip has a similar triple 10-bit digital to analog converter setup. It supports high pixel rates and works well in video systems.

• Texas Instruments DAC1000: This converter gives you 10-bit resolution and fast speeds. It fits many video and graphics uses.

• Intersil ISL59885: This part works with high-speed video and uses little power. It is good for portable devices.

Model	Channels	Resolution	Max Pixel Rate	Power Supply	Special Features
ADV7123JST240	3	10-bit	240 MHz	5 V/3.3 V	Low glitch, industrial
ADV7125	3	10-bit	330 MHz	3.3 V	Faster, newer
DAC1000	1	10-bit	165 MHz	5 V	Single channel
ISL59885	3	8-bit	200 MHz	3.3 V	Low power, compact

Note: When you pick a digital to analog converter, check the resolution, speed, and supply voltage. Make sure it matches your digital video needs and your system’s power limits.

The ADV7123JST240 gives you good results and sharp pictures. This video DAC is used in TVs, computers, and some work machines. When picking a video DAC, check things like how fast it works, how clear the picture is, and how much power it needs. These things help you pick the right chip for your project. Always read the datasheet and look at other choices before you pick one.

Tip: Picking the right part helps your device work well and show great video.

 

 

 

 

 

Written by Jack Elliott from AIChipLink.

 

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