Overview
The AD7249BR-REEL, produced by Analog Devices Inc., is a dual 12-bit serial Digital-to-Analog Converter (DAC) integrated circuit. It features a pair of 12-bit, voltage-output DACs with on-chip output amplifiers and a Zener voltage reference. This device is designed for easy connection to microcomputers and 16-bit digital signal processors via a serial interface. The AD7249BR-REEL is fabricated using linear compatible CMOS (LC2MOS) technology and is available in 16-lead DIP and 16-lead SOIC packages.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Relative Accuracy | ±1/2 LSB max | TMIN to TMAX unless otherwise noted | |
| Differential Nonlinearity | ±1 LSB max | TMIN to TMAX unless otherwise noted | |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V | V | Single or dual supply operation |
| DAC Update Rate | 125 kHz | Serial data rate up to 2 MHz | |
| Package Type | 16-lead DIP, 16-lead SOIC | ||
| Operating Temperature | -40°C to +85°C (B Version: -55°C to +125°C) | °C |
Key Features
- Two complete 12-bit DAC channels with on-chip voltage reference and output amplifiers.
- Single or dual supply operation with selectable output ranges: 0 V to +5 V, 0 V to +10 V, and ±5 V.
- Serial interface allowing easy connection to microcomputers and 16-bit digital signal processors with serial ports.
- Minimum 3-wire interface to most DSP processors.
- DAC update rate of 125 kHz with serial data rates up to 2 MHz.
- CLR function for power-on reset, setting outputs to a known voltage level.
- Low power dissipation and small package size (16-lead DIP and SOIC).
Applications
- Process Control: The AD7249BR-REEL is suitable for precision control applications requiring accurate voltage outputs.
- Industrial Automation: It can be used in various industrial automation systems that require reliable and precise analog outputs.
- Digital Signal Processing Systems: The device is compatible with DSP processors and microcontrollers, making it ideal for DSP applications.
- Input/Output Ports: It can be integrated into systems requiring multiple analog output channels).
Q & A
- What is the resolution of the AD7249BR-REEL DAC?
The AD7249BR-REEL has a resolution of 12 bits).
- What are the available output voltage ranges for the AD7249BR-REEL?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V, and ±5 V).
- What is the maximum DAC update rate of the AD7249BR-REEL?
The maximum DAC update rate is 125 kHz with serial data rates up to 2 MHz).
- What types of packages are available for the AD7249BR-REEL?
The device is available in 16-lead DIP and 16-lead SOIC packages).
- What is the operating temperature range for the AD7249BR-REEL?
The operating temperature range is -40°C to +85°C (B Version: -55°C to +125°C)).
- How does the AD7249BR-REEL interface with microcomputers and DSP processors?
The device interfaces via a serial interface, allowing easy connection to microcomputers and 16-bit digital signal processors with serial ports).
- What is the purpose of the CLR function in the AD7249BR-REEL?
The CLR function sets the output to a known voltage level, useful as a power-on reset).
- What are some common applications of the AD7249BR-REEL?
Common applications include process control, industrial automation, digital signal processing systems, and input/output ports).
- What technology is used to fabricate the AD7249BR-REEL?
The device is fabricated using linear compatible CMOS (LC2MOS) technology).
- Does the AD7249BR-REEL require external trims for full performance?
No external trims are required to achieve full specified performance).
