Overview
The AD7249ARZ-REEL, produced by Analog Devices Inc., is a dual 12-bit serial digital-to-analog converter (DAC) integrated circuit. This component features a pair of 12-bit, voltage-output DACs with on-chip output amplifiers and a Zener voltage reference, all fabricated on a monolithic CMOS chip. The AD7249 is designed for easy connection to microcomputers and 16-bit digital signal processors via a serial interface, minimizing pin count and allowing for a compact package size. It is available in 16-pin DIP and 16-pin SOIC packages.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Relative Accuracy | ±1/2 LSB max | ||
| Differential Nonlinearity | ±1 LSB max | ||
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V | Single or dual supply operation | |
| DAC Update Rate | 125 kHz | ||
| Serial Data Rate | Up to 2 MHz | ||
| Package Types | 16-pin DIP, 16-pin SOIC | ||
| Operating Temperature | -40°C to +85°C (S Version: -55°C to +125°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, ±5 V).
- Serial interface for easy connection to microcomputers and 16-bit digital signal processors.
- Minimum 3-wire interface.
- DAC update rate of 125 kHz and serial data rate up to 2 MHz.
- CLR function for power-on reset to a known voltage level.
- Low power dissipation and compact package size (16-pin DIP and SOIC).
Applications
- Process Control
- Industrial Automation
- Digital Signal Processing Systems
- Input/Output Ports
Q & A
- What is the resolution of the AD7249 DAC?
The AD7249 has a resolution of 12 bits.
- What are the output voltage ranges of the AD7249?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V, and ±5 V.
- What is the DAC update rate of the AD7249?
The DAC update rate is 125 kHz.
- What is the serial data rate of the AD7249?
The serial data rate can be up to 2 MHz.
- What types of packages are available for the AD7249?
The AD7249 is available in 16-pin DIP and 16-pin SOIC packages.
- What is the operating temperature range of the AD7249?
The operating temperature range is -40°C to +85°C (S Version: -55°C to +125°C).
- Does the AD7249 require external trims for full performance?
No, the AD7249 does not require external trims to achieve full specified performance.
- What is the purpose of the CLR function in the AD7249?
The CLR function sets the output to a known voltage level, useful as a power-on reset.
- Can the AD7249 be used with both unipolar and bipolar output formats?
- What is the typical power dissipation of the AD7249?
The AD7249 has low power dissipation, though exact values depend on the specific operating conditions.
