A Complete Guide to the DAC7801KU Device and Specifications

You use digital-to-analog conversion all the time. The DAC7801KU Device is made by Texas Instruments. It has two 12-bit channels. The device comes in a small surface-mount package. This guide explains why engineers like this device. It has a fast parallel interface. It works well and does not lose accuracy. It also has low crosstalk, so signals do not mix. The table below lists key features that make it special.

Product Attribute	Attribute Value
Number of D/A Converters	2
Number of Bits	12
Voltage - Supply	5V (digital/analog)
Settling Time	800ns
Output Type	Current – Unbuffered
Reference Type	External
Operating Temperature	-40°C ~ 85°C

• Double-buffered parallel interface helps updates run smoothly

• The device is tested at all temperatures

• It uses one +5V supply, so it is easy to use

Key Takeaways

• The DAC7801KU is a digital-to-analog converter. It has two 12-bit channels. It gives very accurate results when changing digital signals to analog.

• It has a fast parallel interface. This lets it update data quickly. Fast updates are important for real-time uses.

• The device uses only one +5V power supply. This makes design easier. It also saves space in projects.

• Low crosstalk keeps signal outputs clean. This makes the DAC7801KU great for automation and measurement systems.

• The DAC7801KU can be used in many ways. It works for industrial control, robotics, audio processing, and measurement tools.

DAC7801KU Device Overview

What Is the DAC7801KU?

Many projects need to turn digital signals into analog signals. The dac7801ku device helps you do this with great accuracy. It is a digital-to-analog converter made by Texas Instruments. This device gives you two channels. Each channel has 12-bit resolution. You can use the dac7801ku device to control voltage or current. It works in automation systems, measurement tools, and other electronics.

The dac7801ku is special because it has two channels. Each channel changes digital data into exact analog output. You get good performance where accuracy is important. The dac7801ku device is small, so it fits in tight spaces. It works well in many temperatures. You can trust it to run smoothly.

Tip: The dac7801ku device is flexible and precise. It works for both automation and measurement tasks.

Here is a simple look at how the dual 12-bit DAC design helps in real use:

Feature	Description
Dual 12-bit accuracy	Gives very precise digital-to-analog conversion. This is needed for making accurate signals in automation and measurement systems.
Applications	Used a lot in automation and measurement systems. This shows it is useful in many real-world jobs.

Key Functions and Operation

The dac7801ku device has many helpful functions. The asynchronous CLEAR control lets you reset outputs fast. This helps when you calibrate or start your system. You do not need a clock signal to clear outputs. The dac7801ku makes your work easier.

The fast parallel interface lets you send data quickly. You can update the converter with new values right away. This speed is important for real-time updates. The dac7801ku keeps your data moving smoothly.

Here is a table that shows why these features matter:

Feature	Significance
Asynchronous CLEAR control	Lets you reset or calibrate quickly. This makes starting or adjusting easier.
Fast parallel interface	Handles data fast. This is important for smooth and timely data flow.

You can use the dac7801ku in many machines. It works well in factories, labs, and control systems. You get steady analog output from digital signals. The dac7801ku device helps stop signal mistakes and keeps measurements correct.

When you pick a digital-to-analog converter, you want speed and accuracy. The dac7801ku device gives you both. It has two channels, a fast interface, and easy reset features. The dac7801ku fits into your designs and helps you get better results.

If you need a converter for tough jobs, the dac7801ku device is a good choice. It gives strong performance, simple use, and you can trust it.

Pinout and Package Details

DAC7801KU Pin Configuration

You need to know the pin layout before you use the DAC7801KU device in your project. Each pin has a special job. The device comes with 24 pins. You can see the pin names and their functions in the table below. This helps you connect the device the right way.

Pin No.	Pin Name	Description
1	AGND A	Analog ground for channel A
2	IOUT A	Current output for DAC A
3	RFB A	Feedback resistor for DAC A
4	VREF A	Reference voltage input for DAC A
5	CS	Chip select input
6	DB0	Data bit 0 (LSB)
7	DB1	Data bit 1
8	DB2	Data bit 2
9	DB3	Data bit 3
10	DB4	Data bit 4
11	DB5	Data bit 5
12	DGND	Digital ground
13	DB6	Data bit 6
14	DB7	Data bit 7
15	A0	Address input 0
16	A1	Address input 1
17	CLR	Clear input (resets DAC outputs)
18	WR	Write control input
19	UPD	Update control for DAC registers
20	VDD	Positive power supply
21	VREF B	Reference voltage input for DAC B
22	RFB B	Feedback resistor for DAC B
23	IOUT B	Current output for DAC B
24	AGND B	Analog ground for channel B

Tip: Always double-check the pin numbers before you solder or connect wires. This helps you avoid mistakes and keeps your circuit safe.

Package Type and CAD Model

You can choose from different package types for the DAC7801KU. The most common are the 24-pin plastic DIP and the SOIC package. Each package type has matching CAD models. These models help you design your printed circuit board (PCB) faster. You can use the symbol, footprint, and 3D model in your design software.

Package Type	CAD Models
24-pin plastic DIP	Symbol, Footprint, 3D Model
SOIC	Symbol, Footprint, 3D Model

If you want to build a prototype, the DIP package is easy to use with breadboards. The SOIC package works well for compact PCBs. You can find the CAD models online or in your PCB design tool. This makes your design process smoother and helps you avoid errors.

Features and Specifications

Dual 12-Bit Channels

The dac7801ku gives you very accurate results. It has two 12-bit channels. Each channel changes digital signals to analog output. This is done with high precision. You can use both channels at once. This lets you control two signals by themselves. The dac7801ku has a fast parallel interface. You can update values quickly. Your projects run smoothly.

Here is a table that shows the technical specifications for the dual 12-bit channels:

Feature	Details
Resolution	Dual 12-bit digital-to-analog converter
Package Size	0.3" wide package for space-saving
Interface	8 + 4 bit parallel interface, double-buffered for smooth updates
Crosstalk Level	As low as –94 dB for cleaner signals
Operating Temperature Range	–40 °C to +85 °C for reliable performance in various environments
Speed	Supports fast data transfers for demanding tasks

You can count on the dac7801ku to work well. It works in many places. You get low crosstalk. This keeps your signals clean. The technical specifications show how the dac7801ku is accurate and precise.

Note: You can use the dac7801ku in measurement systems, automation, and control circuits. The dual 12-bit channels give you flexibility and reliability.

Power and Reference Requirements

You only need one +5V supply for the dac7801ku. This makes your design easy. You do not need extra voltage sources. The dac7801ku uses an external reference voltage. You can set the reference for your system. This helps you get the accuracy you want.

The dac7801ku uses little power. You save energy in your project. The technical specifications make it easy to use in many designs. You get steady performance and reliability. The dac7801ku helps your system stay efficient.

Output and Interface

The dac7801ku gives you current outputs. You need an external amplifier for voltage output. The device does not have a built-in buffer for voltage. You can add extra parts to get the voltage you need. The dac7801ku lets you choose how to use the output.

Here are the main output and interface specifications:

Feature	Details
Output Type	Current outputs (requires external amplifier for voltage)
Interface Options	8 + 4 bit parallel interface (double-buffered)

You see the fast parallel interface working. The dac7801ku updates quickly. You get smooth data flow. The technical specifications show how the dac7801ku fits in your system.

You can use the dac7801ku for jobs that need accuracy and precision. The device works reliably. You get clean signals and fast updates. The dac7801ku helps you build better circuits.

• The dac7801ku has unbuffered current output.

• You need extra parts for voltage output.

• The device uses little power.

• You get flexibility with external reference voltage.

• The dac7801ku works with one +5V supply.

You see how the dac7801ku meets your technical needs. The device gives you accuracy, precision, and reliability. You can use it in many projects. The dac7801ku helps you reach your goals for performance and efficiency.

Block Diagram and Circuit Use

Internal Block Diagram

When you look at the inside of the dac7801ku, you can see how it works with digital signals. The block diagram shows how your digital input turns into an analog output. First, control logic takes care of your commands. Then, input registers keep your digital data safe until you want to use it. After that, the dac7801ku moves the data into DAC registers. These registers send the digital values to the converter circuits. Each channel in the dac7801ku works on its own, so you can send different signals to each output.

The block diagram makes it easier to see how the dac7801ku gives you accurate and matched conversion. You get two separate analog outputs from your digital inputs. This is helpful when you need both channels to work together or alone. The clear signal path inside the dac7801ku helps you know what your signals will do.

Note: The inside design of the dac7801ku gives you control and choices. You can count on the device to handle your data the right way.

Typical Application Circuit

You can use the dac7801ku in many kinds of circuits. A common way is to use it to change digital signals from a microcontroller into analog outputs. You connect the parallel data lines from your microcontroller to the dac7801ku input pins. You also connect control lines like write and chip select to help move the data. The dac7801ku needs a +5V power supply and an outside reference voltage. For each channel, you connect the current output to an operational amplifier if you want a voltage output.

Here is a simple example of how you might connect the dac7801ku:

Microcontroller Data Bus  --->  dac7801ku Data Inputs (DB0-DB11)
Microcontroller Control   --->  dac7801ku Control Pins (WR, CS, CLR)
+5V Supply               --->  dac7801ku VDD
Reference Voltage        --->  dac7801ku VREF A/B
Current Output           --->  Op-Amp Circuit (for voltage output)

You can use the dac7801ku in test tools, automation systems, or any project that needs exact analog signals. The device gives you steady performance and is easy to add to your circuit. You can change the reference voltage to fit your system. The dac7801ku lets you update fast, so your circuit reacts quickly to changes.

• The dac7801ku works well in both simple and hard designs.

• You can use both channels at once or control them one at a time.

• The device helps you make stable and exact analog outputs.

Applications of the DAC7801KU

Industrial and Automation Uses

You see the dac7801ku in lots of factories. This device helps machines work with smooth signals. You use the dac7801ku to make signals for equipment. The two channels let you do two jobs at once. It works well in robots and motion control. The dac7801ku helps monitor and control machines. Your equipment keeps running without stopping. You also use the dac7801ku for audio and video work. It gives you clean signal changes. The device fits in embedded systems and calibration setups. You can set exact levels for test equipment. The dac7801ku shapes signals with programmable filters. You adjust signal strength with programmable gain circuits. You use it in auto-calibration to keep things accurate.

• Industrial control systems

• Precision instrumentation

• Robotics and motion control

• Process monitoring devices

• Audio and video processing

• Embedded calibration systems

• Automated test equipment

• Programmable filters and gain circuits

• Auto-calibration circuits

Tip: The dac7801ku gives steady outputs. This helps machines run smoothly in automation jobs.

Instrumentation and Measurement

You trust the dac7801ku for good readings in measurement tools. The two 12-bit channels give high-resolution output. You use the dac7801ku in automation and measurement tools for reliable results. The device works well in many places. You can count on the dac7801ku for exact signals in your instruments.

Feature	Description
Accuracy	Dual 12-bit precision for high-resolution output
Applications	Suitable for automation and measurement systems
Performance	Reliable performance in various applications

You find the dac7801ku in lab tools, test benches, and monitoring systems. The device helps you measure and control signals easily.

Other Use Cases

You find more ways to use the dac7801ku outside factories and labs. The device works in robots where smooth signals help movement. You use the dac7801ku in audio and video gear to make sound and pictures better. The two outputs help you calibrate embedded systems. You shape signals with programmable filters. You adjust them with programmable gain circuits. The dac7801ku also helps auto-calibration so your system stays correct.

• Robotics and motion control

• Audio and video processing

• Embedded calibration systems

• Programmable filters

• Programmable gain circuits

• Auto-calibration for reliable performance

Note: The dac7801ku gives you choices for many projects. You can use it anywhere you need exact digital-to-analog conversion.

Physical Dimensions and Mounting

Package Dimensions

You need to know the size of the DAC7801KU before you design your circuit board. The device comes in two main package types. Each type has its own measurements. You can check these details to make sure the DAC7801KU fits your project.

• The DAC7801KU comes in a 24-pin plastic DIP package. This package is easy to handle and works well for breadboards or through-hole PCBs.

• You can also get the DAC7801KU in a 24-pin SOIC package. This surface-mount package measures about 0.295 inches (7.50 mm) wide. It saves space on your PCB and helps you build compact designs.

Package Type	Pin Count	Width (inches/mm)
Plastic DIP	24	Standard DIP size
SOIC (Surface-Mount)	24	0.295" (7.50 mm)

Tip: Always check your PCB layout software for the correct footprint. This helps you avoid mistakes when you place the DAC7801KU on your board.

Mounting Guidelines

You want your DAC7801KU to work well and last a long time. Good mounting practices help you get the best results. Here are some simple steps you can follow:

1. Place the DAC7801KU on your PCB so that the pin 1 marker matches the board layout.

2. For the DIP package, insert the pins straight into the holes. Solder each pin carefully to avoid cold joints.

3. For the SOIC package, use a fine-tip soldering iron or a reflow oven. Make sure each pin connects well to the pad.

4. Keep the DAC7801KU away from heat sources. Too much heat can damage the device.

5. Clean the board after soldering. This removes any leftover flux and helps prevent corrosion.

You can use anti-static tools when handling the DAC7801KU. This protects the device from static electricity and keeps it working right.

If you follow these steps, you help your DAC7801KU stay reliable. Careful mounting makes your circuit stronger and more accurate. You get better performance and fewer problems in your project.

Advantages and Disadvantages

Benefits of the DAC7801KU Device

The dac7801ku gives you many good things for your project. It has two channels, so you can control two signals at once. You get fast data updates because it uses a parallel interface. You only need one +5V supply, which makes your design easy and saves space. The dac7801ku gives strong and steady outputs. You can reset it quickly with the asynchronous CLEAR function. The dac7801ku works in many temperatures, so you can use it in lots of places. You also get low crosstalk, so your signals stay clean.

Here is a table that lists the main benefits of the dac7801ku:

Feature	DAC7801KU Benefits
Dual-channel capabilities	Control two signals simultaneously
Data update speed	Fast data updates via parallel interface
Power supply requirement	Operates with a single +5V supply
Output stability	Buffered outputs ensure strong signals
Reset functionality	Asynchronous CLEAR for easy resets
Environmental adaptability	Functions well in various temperature ranges
Crosstalk	Low crosstalk for clean outputs

You can count on the dac7801ku to work well in automation, measurement, and control systems.

Limitations to Consider

You should know about some limits before using the dac7801ku. The device gives current outputs, so you need extra parts if you want voltage output. The dac7801ku does not have a built-in voltage buffer. You must add an external amplifier for some uses. The dac7801ku uses a parallel interface, so you need more pins on your microcontroller or processor. This can make your circuit harder to build. The dac7801ku works with an external reference voltage, so you must give it a steady reference for best results. Some other DACs have built-in voltage outputs or serial interfaces if you want a simpler design.

• You need extra parts for voltage output.

• The parallel interface uses more pins.

• You must give a steady external reference voltage.

• The dac7801ku may not be right for every project.

Think about what your project needs before picking the dac7801ku. It gives great performance, but you need to plan your circuit well.

Alternatives and Comparisons

DAC7801KU vs DAC7800 and DAC7802

You may want to know how the dac7801ku is different from the DAC7800 and DAC7802. All three devices are made by Texas Instruments. They all change digital signals into analog signals. Each device has its own special features. The dac7801ku has two 12-bit channels and a fast parallel interface. The DAC7800 also has 12-bit resolution, but it only has one channel. The DAC7802 gives you two channels, but it uses a serial interface instead of parallel.

Here is a table that shows how they compare:

Feature	dac7801ku	DAC7800	DAC7802
Channels	2	1	2
Resolution	12-bit	12-bit	12-bit
Interface	Parallel	Parallel	Serial
Output Type	Current	Current	Current
Reference	External	External	External
Package Options	DIP, SOIC	DIP, SOIC	SOIC

The dac7801ku lets you control two outputs at the same time. Its parallel interface helps you update both channels quickly. The DAC7802 is good if you want to use fewer pins and can work with a serial connection. The DAC7800 is best for simple projects that only need one channel.

Choosing the Right DAC

You should think about your project before picking a DAC. The dac7801ku gives you a mix of accuracy, speed, and easy use. It has two 12-bit channels, so you can handle two signals at once. The parallel interface lets you update data fast. The dac7801ku works in many temperatures, so you can use it in lots of places.

When you choose between the dac7801ku and other DACs, keep these things in mind:

• You want two channels for more control.

• You need fast updates with a parallel interface.

• You want low crosstalk and monotonic performance.

• You need a device that works in many environments.

• You trust Texas Instruments for quality and support.

• You can provide an external reference voltage.

• You have enough I/O pins for the parallel interface.

• You want easy updates and reliable operation.

• You need a DAC that fits both automation and measurement jobs.

• You want a device that saves space and power.

The dac7801ku is best when you need speed, accuracy, and two outputs. If you only need one channel, the DAC7800 may be better. If you want to use fewer pins, the DAC7802 with a serial interface could be a good choice. Always pick the DAC that matches your project needs for the best results.

Manufacturer and Support

About Texas Instruments

You want a company you can trust for your project. Texas Instruments makes the dac7801ku device. This company is well known in the analog IC industry. You see their products in lots of electronics everywhere. Texas Instruments has a good name for making reliable parts. When you use the dac7801ku, you know you get quality and steady results.

• Texas Instruments makes the dac7801ku device.

• The company is known for reliable electronic parts.

• Texas Instruments is respected in the analog IC industry.

You can count on Texas Instruments for help and new ideas. The dac7801ku comes from a company that cares about performance and happy customers. You feel safe using their products in your designs.

Documentation and Resources

You need helpful resources to use the dac7801ku in your project. Texas Instruments gives you official documents and technical help. You can find datasheets, product pages, and assembly guides online. These resources help you learn about the dac7801ku and use it the right way.

Resource Type	Link
Product Page	Manufacturer Product Page
Datasheet	Datasheets

You can use these links to get more details about the dac7801ku. The datasheet gives you technical facts and tips for using it. The product page helps you see if it is in stock and lets you order. You also find assembly materials and extra documents for your design work.

Tip: Always read the datasheet before you start your project. This helps you avoid mistakes and get the best results with the dac7801ku.

The DAC7801KU device gives you strong results and is easy to use in many ways. It has two 12-bit channels, so you can control two signals at once. The fast parallel interface lets you send data quickly. It works in hot and cold places, so it is good for many jobs. This makes it a great pick for automation and measurement projects. You can look at this table to see how it matches up with other DACs:

Feature	DAC7801KU	Other DACs
Resolution	12-bit	Usually 12-bit
Channels	2	Varies
Conversion Rate	1.25 MSPs	Varies
Temperature Range	-40°C to +85°C	Varies
Interface	Parallel	Serial/Parallel

You should always read the Texas Instruments datasheet before you begin your project.

 

 

 

 

 

Written by Jack Elliott from AIChipLink.

 

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