Overview
The AD7243BRZ-REEL, produced by Analog Devices Inc., is a comprehensive 12-bit, voltage output, digital-to-analog converter (DAC) integrated on a monolithic CMOS chip. This device includes an on-chip voltage reference and an output amplifier, eliminating the need for external trims to achieve full specified performance. The AD7243 is designed to operate with single or dual supplies, offering multiple output voltage ranges: 0 V to +5 V, 0 V to +10 V, and ±5 V in bipolar mode. The device features a fast and versatile serial interface compatible with microcomputers and 16-bit digital signal processors, allowing for high-speed data transfer up to 5 MHz and a DAC update rate of 300 kHz.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V (bipolar) |
| Data Format | Natural Binary (unipolar), Offset Binary or Two’s Complement (bipolar) |
| Serial Interface Speed | Up to 5 MHz |
| DAC Update Rate | 300 kHz |
| Output Amplifier Capability | +10 V across a 2 kΩ load |
| Power Dissipation | Typical 100 mW |
| Nonlinearity | ±1/2 LSB (TMIN to TMAX) |
| Package Types | 16-Lead DIP, 16-Lead SOIC |
Key Features
- On-chip voltage reference and output amplifier
- Multiple output voltage ranges: 0 V to +5 V, 0 V to +10 V, and ±5 V
- Fast and versatile serial interface compatible with microcomputers and 16-bit DSPs
- High-speed data transfer up to 5 MHz and DAC update rate of 300 kHz
- CLR function for power-on reset to a known voltage level
- Serial data output capability for daisy chaining in multi-DAC systems
- Low power dissipation: typical 100 mW
- High accuracy with ±1/2 LSB nonlinearity over the full temperature range
Applications
- Process Control
- Industrial Automation
- Digital Signal Processing Systems
- Input/Output Ports
Q & A
- What is the resolution of the AD7243 DAC?
The AD7243 has a 12-bit resolution.
- What are the available output voltage ranges for the AD7243?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V, and ±5 V in bipolar mode.
- What data formats does the AD7243 support?
The AD7243 supports natural binary in unipolar ranges and either offset binary or two’s complement in bipolar range.
- What is the maximum serial interface speed of the AD7243?
The serial interface speed can be up to 5 MHz.
- What is the DAC update rate of the AD7243?
The DAC update rate is 300 kHz.
- What is the capability of the output amplifier in the AD7243?
The output amplifier can develop +10 V across a 2 kΩ load.
- How much power does the AD7243 typically dissipate?
The typical power dissipation is 100 mW.
- What is the nonlinearity of the AD7243 over the full temperature range?
The nonlinearity is ±1/2 LSB over the full temperature range.
- In what packages is the AD7243 available?
The AD7243 is available in 16-Lead DIP and 16-Lead SOIC packages.
- What is the purpose of the CLR function in the AD7243?
The CLR function sets the output to a known voltage level, useful as a power-on reset.
