Overview
The AD7249ARZ, produced by Analog Devices Inc., is a dual 12-bit serial Digital-to-Analog Converter (DAC) integrated into a single monolithic CMOS chip. This device features two complete 12-bit DACs with output amplifiers and a Zener voltage reference, making it suitable for a variety of applications requiring precise analog output. The AD7249ARZ is designed for easy interfacing with microcomputers and 16-bit digital signal processors through a serial interface, minimizing pin count and enabling a compact package size.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V | V | Dependent on supply configuration |
| DAC Update Rate | 125 kHz | ||
| Serial Data Rate | Up to 2 MHz | ||
| Supply Voltage | +12 V to +15 V, -12 V to -15 V | V | Single or dual supply operation |
| Package Type | 16-lead DIP, 16-lead SOIC | ||
| Relative Accuracy | ±1 LSB max | ||
| Differential Nonlinearity | ±1 LSB max |
Key Features
- Two complete 12-bit DACs with output amplifiers and Zener voltage reference on a single monolithic CMOS chip.
- Serial interface allowing easy connection to microcomputers and 16-bit digital signal processors.
- Minimum 3-wire interface.
- Three selectable output ranges per channel: 0 V to +5 V, 0 V to +10 V, and ±5 V.
- Single or dual supply operation.
- CLR function for power-on reset, setting outputs to a known voltage level.
- Low power dissipation.
- Compact package size: 16-lead DIP and 16-lead SOIC.
Applications
- Process Control
- Industrial Automation
- Digital Signal Processing Systems
- Input/Output Ports
Q & A
- What is the resolution of the AD7249ARZ DAC?
The AD7249ARZ has a resolution of 12 bits.
- What are the output voltage ranges of the AD7249ARZ?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V, and ±5 V, depending on the supply configuration.
- What is the maximum serial data rate for the AD7249ARZ?
The serial data rate can be up to 2 MHz.
- What is the DAC update rate of the AD7249ARZ?
The DAC update rate is 125 kHz.
- What types of packages are available for the AD7249ARZ?
The AD7249ARZ is available in 16-lead DIP and 16-lead SOIC packages.
- Does the AD7249ARZ support single or dual supply operation?
Yes, it supports both single and dual supply operation.
- What is the purpose of the CLR function in the AD7249ARZ?
The CLR function sets the output to a known voltage level, useful as a power-on reset.
- How does the AD7249ARZ interface with microcontrollers and DSPs?
The AD7249ARZ interfaces through a serial interface, minimizing pin count and allowing easy connection to microcomputers and 16-bit digital signal processors.
- What are some common applications of the AD7249ARZ?
Common applications include process control, industrial automation, digital signal processing systems, and input/output ports.
- What is the fabrication process of the AD7249ARZ?
The AD7249ARZ is fabricated on linear compatible CMOS (LC2MOS), an advanced mixed technology process.
