AD7247AAR DAC: Features, Pinout, Datasheet, and Applications

You use digital systems that need very accurate analog signals. The AD7247AAR DAC is a dual 12-bit digital-to-analog converter. This device turns digital data into exact analog outputs. You see it in many modern electronics where control must be exact.

• Many automation systems use it to make control more precise.

• Process control systems depend on it for steady and correct signal changes.

• Closed-loop servo systems need it to give feedback and small changes for smooth movement.

Key Takeaways

• The AD7247AAR DAC changes digital signals into exact analog outputs. This makes it great for automation and control systems.

• It has two 12-bit channels. This lets you control two outputs at the same time. This helps make many jobs work better.

• Its fast settling time is only 8 microseconds. This means it reacts quickly to new data. Fast response is important for real-time work.

• The device has built-in voltage buffers. You do not need extra amplifiers. This makes the circuit easier to design.

• The AD7247AAR DAC works well in many temperatures. It can work from -40°C to +85°C. This makes it good for many places.

AD7247AAR DAC Overview

What It Is

The AD7247AAR DAC helps change digital numbers into smooth analog signals. It has two 12-bit channels, so you can control two outputs at once. Each channel lets you make small changes to your signals. You do not need extra parts because it has voltage buffers built in. This makes your circuit easier and more dependable.

Here is a table that lists the main features of the AD7247AAR DAC:

Characteristic	Description
Dual 12-bit DAC resolution	Lets you adjust two outputs with fine detail.
Voltage-buffered outputs	Gives steady signals without needing extra amplifiers.
Fast response with 8µs settling time	Changes outputs quickly after you update the input.
R-2R ladder architecture	Makes sure your signal conversion is accurate and steady.
Flexible reference options	Lets you use either an internal or external reference.
Wide supply range	Works with voltages from ±10.8V up to 16.5V.
Reliable operation across temperatures	Stays stable from -40°C to +85°C.
Easy integration with parallel data interface	Connects simply to your digital system.

How It Works

You send digital data to the AD7247AAR DAC using a parallel interface. Inside, it uses an R-2R ladder network to turn your digital input into an analog voltage. Each channel has its own ladder and buffer, so both outputs work on their own.

• The device gives high precision with an INL of ±1 LSB and a DNL of ±0.9 LSB.

• The 8µs settling time means the output changes almost right away after you send new data.

• You can use the built-in reference or add your own, so you have more choices for your design.

• The buffered outputs let you connect loads directly, so you do not need extra amplifiers.

Tip: Use the AD7247AAR DAC when you need fast and accurate signal changes, like in automation or control systems.

The AD7247AAR DAC gives you flexibility, speed, and accuracy in one device. You can count on it to give steady analog signals in many different places.

Features and Specs

Key Features

The AD7247AAR DAC is special because it works well and is built smart. It uses an R-2R ladder, so your analog signals are always correct and smooth. You can pick if you want to use the inside reference or add your own. This gives you more ways to build your circuit. The DAC works with many power supplies, from ±10.8V to 16.5V. It keeps working even if it gets very hot or cold, from -40°C to 85°C. You can connect it to your digital system easily because it uses a parallel data interface.

Here is a table that shows the main features:

Feature	Description
R-2R ladder architecture	Makes sure your signals are always correct and smooth.
Flexible reference options	Lets you pick between using the inside or outside reference.
Wide supply range	Works with voltages from ±10.8V to 16.5V, so it fits many systems.
Reliable operation across temperatures	Keeps working from -40°C to 85°C, even in tough places.
Easy integration with parallel data interface	Lets you hook it up fast and easy to your system.

Note: The dual DAC design means you get two channels. You can control two analog outputs at once. This is helpful for machines and control systems.

The parallel data input lets you send information fast and easy. This makes your system react quickly. The buffered voltage output keeps your analog signals steady and correct. The AD7247AAR DAC only takes 8 microseconds to settle, so your output is ready almost right away.

Here is a table that lists the main benefits of having two DACs and using parallel data input:

Key Benefit	Description
Dual DAC Structure	Gives you two channels, so you can make more signals at once.
Parallel Data Input	Makes it simple to add to many systems, so it works fast.
Buffered Voltage Output	Keeps your analog signals steady and correct, which is important for real-time work.
Settling Time	Gets ready in 8μs, so your output is quick for your needs.

Technical Specs

You should know the main details before you use the AD7247AAR DAC. Analog Devices, Inc. makes this DAC. It gives you 12 bits of resolution, so you can make small changes to your analog output. The DAC works with both digital and analog voltages from 10.8V to 16.5V. It works well in hot or cold places, from -40°C to 85°C. The output changes fast, in just 8 microseconds, after you send new data.

Here is a table with the main technical specs:

Product Attribute	Attribute Value
Manufacturer	Analog Devices, Inc.
Voltage - Supply, Digital	10.8V ~ 16.5V
Voltage - Supply, Analog	±10.8V ~ 16.5V
Number of Bits	12
Settling Time	8µs
Operating Temperature	-40°C ~ 85°C

Tip: Always check the voltage and temperature before you use the AD7247AAR DAC. This helps you stop problems and keeps your system working well.

The AD7247AAR DAC gives you good accuracy, speed, and choices. You can use it in many things, like factory machines or process control. Its two channels and fast output make it a smart pick for systems that need steady and correct analog signals.

Pinout and Functions

Pin Diagram

You will find the AD7247AAR DAC in a 24-pin SOIC package. This package is wide, measuring about 7.5 mm. The chip uses a standard pin layout that makes it easy to connect to your circuit. Here is a quick overview:

Feature	Details
Package Type	24-SOIC (0.295", 7.50mm)
Pin Count	24
Minimal Input Voltage	5V
Series	DACPORT® series

Tip: Always check the pin numbers and names before you connect the chip. This helps you avoid wiring mistakes.

Pin Descriptions

Each pin on the AD7247AAR DAC has a special job. Some pins handle digital data, while others control the two DAC channels or supply power. The parallel data input lets you send 12 bits at once, which makes your system fast and efficient. You can control each DAC channel (A and B) using separate chip select pins. This setup lets you update both outputs at the same time or one at a time.

Pin No.	Pin Name	Description
1	REF OUT	Internal 5 V reference output. Connect to REF IN for internal reference operation
2	ROFSB	Offset resistor for DAC B. Sets output range (0–5 V, 0–10 V, or ±5 V)
3	VOUTB	Analog output voltage from DAC B. Buffered output with selectable ranges
4	DB11	Data Bit 11 (MSB)
5	DB10	Data Bit 10
6	GND	Ground reference for all circuitry
7–15	DB9–DB1	Data Bits 9 through 1
16	DB0	Data Bit 0 (LSB)
17	CSB	Chip select input for DAC B (active low)
18	CSA	Chip select input for DAC A (active low)
19	WR	Write input (active low). Used with CSA/CSB to latch data
20	VDD	Positive supply voltage (+12 V to +15 V)
21	VOUTA	Analog output voltage from DAC A. Buffered output with selectable ranges
22	VSS	Negative supply voltage (0 V or –12 V to –15 V)
23	ROFSA	Offset resistor for DAC A. Sets output range (0–5 V, 0–10 V, or ±5 V)
24	REF IN	Reference voltage input (nominal 5 V). Common to both DACs

You use the parallel data pins (DB0–DB11) to send digital values to the chip. The CSA and CSB pins let you pick which DAC channel to update. The WR pin latches your data into the selected channel. Each channel has its own output (VOUTA and VOUTB), so you can create two separate analog signals at the same time. This dual DAC structure and parallel data input make the AD7247AAR DAC a strong choice for systems that need fast and flexible analog control.

AD7247AAR DAC Datasheet

Where to Find

You can get the AD7247AAR DAC datasheet online. The datasheet has all the technical info you need. It helps you design and fix your circuits. You should use trusted websites to find the datasheet.

• The official Analog Devices datasheet for the AD7247AAR DAC is here.

You can look at the datasheet for free. You can also download it for your projects. Always use a good source so you get the right information.

What to Look For

When you open the datasheet, check some important parts. These parts help you connect, use, and fix the AD7247AAR DAC. The table below shows what you should look at first:

Section	Importance
Pinout Details	Needed for making the right connections to the DAC.
Features	Shows what the DAC can do and how well it works.
Typical Applications	Helps you see where and how to use the DAC.

You should also look at the electrical specs and timing diagrams. These show how the DAC works in real life. The table below lists some important numbers:

Characteristic	Value
Settling Time	8µs
INL/DNL (LSB)	±1 (Max), ±0.9 (Max)

Tip: Always look at the timing diagrams before you build your circuit. This helps you avoid mistakes with data and signals.

The datasheet has application notes too. These notes give you extra help for using the DAC in different ways. You can learn how to set voltage ranges, use references, and connect outputs. If you want your project to work well, read these notes carefully.

Applications

Automation

The AD7247AAR DAC is used in many automation systems. It helps control machines and equipment with high accuracy. This device changes digital signals into smooth analog outputs. Many industries use this DAC to keep their work running well. Here are some ways it is used:

• In industrial automation, it gives better control for factory tools and robots.

• In data acquisition, it gives steady analog signals for clear measurements.

• In servo and motion controls, it helps with exact movement and speed.

• In process control, it turns digital commands into steady analog signals.

• For signal generation, it helps make and shape test signals.

Tip: If you need steady and accurate analog signals in your automation project, this DAC gives you good control.

Process Control

Process control is used to watch and manage machines in factories and labs. The AD7247AAR DAC makes these systems more reliable. It gives exact analog outputs, which help keep things stable. The table below shows how it helps in different jobs:

Scenario	Benefit
Industrial Automation	Better control of machine work
Data Acquisition Systems	Accurate signal conversion
Robotic Arms	More exact movement and tasks
Automated Inspection Systems	More steady quality checks

You can trust this DAC to keep your process control systems working well. It helps stop mistakes and keeps machines running as they should.

Servo Systems

Servo systems need fast and exact control. The AD7247AAR DAC helps you get smooth and quick performance. This DAC has two channels, so you can control more than one thing at once. It also has fast settling time and buffered outputs, which help you reach the right spot quickly. Here is what you get:

• You get exact digital-to-analog conversion.

• Two DAC channels let you control more outputs.

• Fast settling time means quick changes.

• Buffered outputs keep signals steady.

• You get better control of position, speed, and torque.

You will see better results in your servo systems. The DAC helps you get smooth movement, exact position, and strong control of speed and torque. This makes your machines work better and more reliably.

You now know the AD7247AAR DAC has two 12-bit channels. It can change signals quickly and gives you different voltage outputs. The table below lists its main features:

Feature	Specification
Architecture	R-2R architecture
Resolution	Dual 12-bit
Output Type	Voltage-output
Data Interface	Parallel
Settling Time	8µs

Always look at the datasheet before you build your project. The datasheet shows how to connect the chip and keep signals correct. If you want to see other DAC choices, check the table below:

Part Number	Key Features	Use Case/Notes
AD5504BRUZ	Quad-channel, high voltage output	Multiple outputs for industrial systems
AD9760ARRL	10-bit, high speed	Waveform generation, communications
AD7111ACRZ	Multiplying DAC, programmable steps	Gain control, signal calibration

Tip: Try using the AD7247AAR DAC in real projects or look at other DACs to learn more.

 

 

 

 

 

Written by Jack Elliott from AIChipLink.

 

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