Overview
The AD7243BR-REEL, produced by Analog Devices Inc., is a complete 12-bit, voltage output, digital-to-analog converter (DAC) integrated on a monolithic CMOS chip. This device includes an output amplifier and a Zener voltage reference, eliminating the need for external trims to achieve full specified performance. The AD7243 is available in 16-lead DIP and 16-lead SOIC packages, making it versatile for various applications.
Key Specifications
| Parameter | Value | Conditions/Comments |
|---|---|---|
| Resolution | 12 bits | |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V | Selected using internal gain resistor |
| Data Format | Natural binary (unipolar), offset binary or two’s complement (bipolar) | |
| DAC Update Rate | 300 kHz | |
| Serial Interface Speed | Up to 5 MHz | |
| Power Dissipation | 100 mW typical | |
| Nonlinearity | ±1/2 LSB TMIN to TMAX | |
| Output Amplifier Capability | +10 V across a 2 kΩ load |
Key Features
- Complete 12-bit DAC with output amplifier and Zener voltage reference on a single CMOS chip.
- Three selectable output voltage ranges: 0 V to +5 V, 0 V to +10 V, and ±5 V.
- Fast and versatile serial interface supporting up to 5 MHz data rates and 300 kHz DAC update rates.
- 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 of 100 mW typical.
- High accuracy with nonlinearity of ±1/2 LSB over the operating temperature range.
- Available in 16-lead DIP and 16-lead SOIC packages.
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 resolution of 12 bits.
- What are the available output voltage ranges for the AD7243?
The AD7243 offers output voltage ranges of 0 V to +5 V, 0 V to +10 V, and ±5 V.
- What data formats are supported by the AD7243?
The AD7243 supports natural binary format for unipolar ranges and either offset binary or two’s complement format for bipolar ranges.
- What is the maximum DAC update rate of the AD7243?
The AD7243 can achieve a DAC update rate of 300 kHz.
- How does the AD7243 handle power-on reset?
The AD7243 features a CLR function that sets the output to a known voltage level during power-on reset.
- What is the power dissipation of the AD7243?
The AD7243 has a typical power dissipation of 100 mW.
- What is the nonlinearity of the AD7243?
The nonlinearity of the AD7243 is ±1/2 LSB over the operating temperature range.
- What packages are available for the AD7243?
The AD7243 is available in 16-lead DIP and 16-lead SOIC packages.
- Can the AD7243 be used in multi-DAC systems?
Yes, the AD7243 supports daisy chaining in multi-DAC systems through its serial data output capability.
- What is the maximum output voltage that the AD7243's output amplifier can develop?
The output amplifier of the AD7243 can develop +10 V across a 2 kΩ load.
