Overview
The AD7243AR is a complete 12-bit, voltage output, digital-to-analog converter (DAC) produced by Analog Devices Inc. It integrates an output amplifier and a Zener voltage reference on a monolithic CMOS chip, eliminating the need for external trims to achieve full specified performance. This DAC is designed for precision and versatility, offering single or dual supply operation with various output voltage ranges, including 0 V to +5 V, 0 V to +10 V, and bipolar ±5 V. The device supports multiple data formats such as natural binary, offset binary, and two’s complement, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Number of Channels | 1 Channel |
| Interface Type | 3-Wire Serial |
| Minimum Operating Temperature (°C) | -40 |
| Maximum Operating Temperature (°C) | +85 |
| Settling Time | 10 μs |
| Max Supply Voltage | 16.5 V |
| Supply Voltage - Min | 10.8 V |
| Output Voltage Ranges | 0 V to +5 V, 0 V to +10 V, ±5 V (bipolar) |
| DAC Update Rate | 300 kHz |
| Package | 16-Lead DIP, 16-Lead SOIC |
Key Features
- Complete 12-bit DAC with output amplifier and Zener voltage reference on a single CMOS chip.
- Single or dual supply operation with output voltage ranges of 0 V to +5 V, 0 V to +10 V, and bipolar ±5 V.
- Supports natural binary, offset binary, and two’s complement data formats.
- Fast versatile serial interface with data rates up to 5 MHz and a DAC update rate of 300 kHz.
- Serial data output capability for daisy chaining in multi-DAC systems.
- Low power dissipation: 100 mW typical.
- Ultra-low noise floor: -70 dB typical.
- CLR function for power-on reset to a known voltage level.
Applications
- Process Control and Industrial Automation: Suitable for precise analog output tasks in industrial environments.
- Digital Signal Processing Systems: Compatible with microcomputers and 16-bit digital signal processors.
- Video Signal Generation: Used in video game consoles, multimedia systems, and video processing equipment.
- Test and Measurement Equipment: Ideal for generating high-resolution analog signals.
- Digital Signage and Video Surveillance: For high-quality analog RGB video signals).
Q & A
- What is the resolution of the AD7243AR DAC?
The AD7243AR has a 12-bit resolution.
- What are the available output voltage ranges for the AD7243AR?
The output voltage ranges include 0 V to +5 V, 0 V to +10 V, and bipolar ±5 V.
- What data formats does the AD7243AR support?
The AD7243AR supports natural binary, offset binary, and two’s complement data formats.
- What is the maximum DAC update rate of the AD7243AR?
The maximum DAC update rate is 300 kHz.
- Can the AD7243AR be used in multi-DAC systems?
Yes, it features a serial data output capability for daisy chaining in multi-DAC systems.
- What is the typical power dissipation of the AD7243AR?
The typical power dissipation is 100 mW.
- What are the package options for the AD7243AR?
The AD7243AR is available in 16-lead DIP and 16-lead SOIC packages.
- What is the CLR function in the AD7243AR?
The CLR function sets the output to a known voltage level, useful as a power-on reset.
- What is the settling time of the AD7243AR?
The settling time is 10 μs.
- What are some common applications of the AD7243AR?
Common applications include process control, industrial automation, video signal generation, test and measurement equipment, and digital signage.
