Overview
The AD7243AN, produced by Analog Devices Inc., is a complete 12-bit, voltage output, digital-to-analog converter (DAC) integrated on a single monolithic CMOS chip. This device includes an on-chip voltage reference and an output amplifier, making it a self-contained solution for various applications. The AD7243AN operates with either single or dual power supplies, offering flexible output voltage ranges of 0 V to +5 V, 0 V to +10 V, and ±5 V. It features a fast and versatile serial interface, allowing easy connection to microcomputers and digital signal processors, and supports a DAC update rate of 300 kHz.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V |
| Supply Voltage | 10.8 V to 16.5 V (dual supply), 10.8 V to 16.5 V (single supply) |
| Interface | SPI, Serial |
| DAC Update Rate | 300 kHz |
| Settling Time | 10 μs |
| Integral Nonlinearity (INL) | ±1/2 LSB |
| Package Type | 16-lead DIP, 16-lead SOIC |
| Power Dissipation | 100 mW (typical) |
Key Features
- Complete 12-bit DAC with on-chip voltage reference and output amplifier.
- Single or dual supply operation with flexible output voltage ranges.
- Fast and versatile serial interface supporting up to 5 MHz data rates.
- Serial data output capability for daisy-chaining in multi-DAC systems.
- CLR function for power-on reset to a known voltage level.
- Low power dissipation and high reliability due to single-chip design.
- Support for natural binary, offset binary, and two’s complement data formats.
Applications
- Process Control
- Industrial Automation
- Digital Signal Processing Systems
- Input/Output Ports
Q & A
- What is the resolution of the AD7243AN DAC?
The AD7243AN is a 12-bit digital-to-analog converter.
- What are the available output voltage ranges for the AD7243AN?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V, and ±5 V.
- What type of interface does the AD7243AN use?
The AD7243AN uses a serial interface, specifically SPI.
- What is the maximum DAC update rate of the AD7243AN?
The maximum DAC update rate is 300 kHz.
- How does the CLR function work on the AD7243AN?
The CLR function sets the output to 0 V in unipolar ranges and in the two’s complement bipolar range, or to –REFIN in the offset binary bipolar range, useful as a power-on reset.
- What are the package options for the AD7243AN?
The AD7243AN is available in 16-lead DIP and 16-lead SOIC packages.
- What is the typical power dissipation of the AD7243AN?
The typical power dissipation is 100 mW.
- Can the AD7243AN be used in multi-DAC systems?
Yes, the AD7243AN supports daisy-chaining in multi-DAC systems through its serial data output capability.
- What data formats are supported by the AD7243AN?
The AD7243AN supports natural binary, offset binary, and two’s complement data formats.
- What is the recommended power supply decoupling for the AD7243AN?
It is recommended to decouple the VDD and VSS lines using 0.1 µF capacitors, and in noisy environments, to use 10 µF capacitors in parallel.
