Overview
The AD7249BRZ-REEL, manufactured by Analog Devices Inc., is a dual 12-bit, voltage-output, digital-to-analog converter (DAC) integrated circuit. This component is part of the DACPORT series and features output amplifiers and a Zener voltage reference on a monolithic CMOS chip. The AD7249 is designed for high precision and reliability, making it suitable for various applications requiring accurate analog output from digital signals.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Description | IC DAC 12BIT V-OUT 16SOIC |
| Number of Bits | 12 |
| Number of D/A Converters | 2 |
| Settling Time | 10µs |
| Output Type | Voltage - Buffered |
| Differential Output | No |
| Data Interface | SPI |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | ±11.4V ~ 15.75V |
| INL/DNL (LSB) | ±0.5 (Max), ±0.9 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
Key Features
- Dual 12-Bit DACs: The AD7249 features two 12-bit digital-to-analog converters, providing high resolution and precision.
- Output Amplifiers: Integrated output amplifiers capable of developing +10 V across a 2 kΩ load.
- Zener Voltage Reference: Includes a Zener voltage reference for stable and accurate output.
- Serial Interface: SPI interface for easy connection to microcomputers and digital signal processors, with data rates up to 2 MHz.
- Multiple Output Ranges: Supports output voltage ranges of 0 V to +5 V, 0 V to +10 V, and ±5 V with dual supplies.
- CLR Function: A clear function sets the output to a known voltage level, useful for power-on reset.
- High Accuracy: No external trims required to achieve full specified performance, with INL/DNL of ±0.5 (Max) and ±0.9 (Max) LSB.
Applications
- Industrial Control Systems: Suitable for applications requiring precise analog output in industrial control environments.
- Medical Devices: Used in medical equipment where high accuracy and reliability are crucial.
- Aerospace and Defense: Applicable in aerospace and defense systems due to its robust specifications and reliability.
- Automotive Systems: Can be used in automotive systems for various control and monitoring functions.
- Test and Measurement Equipment: Ideal for test and measurement instruments that require accurate analog outputs.
Q & A
- What is the AD7249BRZ-REEL used for?
The AD7249BRZ-REEL is a dual 12-bit digital-to-analog converter used to convert digital signals into precise analog outputs.
- What is the settling time of the AD7249BRZ-REEL?
The settling time of the AD7249BRZ-REEL is 10µs.
- What type of data interface does the AD7249BRZ-REEL use?
The AD7249BRZ-REEL uses a Serial Peripheral Interface (SPI).
- What are the supported output voltage ranges for the AD7249BRZ-REEL?
The supported output voltage ranges are 0 V to +5 V, 0 V to +10 V, and ±5 V with dual supplies.
- What is the operating temperature range of the AD7249BRZ-REEL?
The operating temperature range is -40°C to 85°C.
- What type of package does the AD7249BRZ-REEL come in?
The AD7249BRZ-REEL comes in a 16-SOIC (0.295", 7.50mm Width) package.
- Is the AD7249BRZ-REEL RoHS compliant?
Yes, the AD7249BRZ-REEL is RoHS compliant.
- What is the architecture of the DACs in the AD7249BRZ-REEL?
The DACs use an R-2R architecture.
- Can the AD7249BRZ-REEL be used with both unipolar and bipolar output ranges?
Yes, it supports both unipolar and bipolar output ranges.
- What is the purpose of the CLR function in the AD7249BRZ-REEL?
The CLR function sets the output to a known voltage level, useful for power-on reset.
