Overview
The AD7224CQ, produced by Analog Devices Inc., is a precision 8-bit voltage-output digital-to-analog converter (DAC) integrated with an output amplifier on a single monolithic CMOS chip. This device is fabricated using the Linear Compatible CMOS (LC2MOS) process, which allows for the integration of high-speed digital logic and precision analog circuits. The AD7224CQ is designed to provide accurate and reliable conversion, making it suitable for a variety of applications. It features a double-buffered interface logic, allowing simultaneous updates in systems with multiple DACs, and supports both single and dual supply operations.
Key Specifications
| Parameter | Value | Conditions/Comments |
|---|---|---|
| Resolution | 8 Bits | |
| Total Unadjusted Error | ±1 LSB max | VDD = +15 V ± 5%, VREF = +10 V |
| Relative Accuracy | ±1/2 LSB max | |
| Differential Nonlinearity | ±1 LSB max | |
| Full-Scale Error | ±1 LSB max | |
| Full-Scale Temperature Coefficient | ±20 ppm/°C max | |
| Power Consumption | 35 mW typical (single supply) | |
| Operating Temperature Range | –40°C to +85°C | |
| Input Reference Voltage Range | +2 V to +12.5 V (dual supplies) | |
| Output Amplifier Capability | +10 V across a 2 kΩ load |
Key Features
- High Precision and Accuracy: The AD7224CQ offers excellent total unadjusted error of less than 1 LSB over the full operating temperature range, ensuring high precision and accuracy in conversion.
- Low Power Consumption: Fabricated in LC2MOS process, the device consumes low power, typically 35 mW with a single supply.
- Single or Dual Supply Operation: The device can operate from a single power supply rail or with dual supplies, enhancing performance for some parameters.
- Double-Buffered Interface Logic: Allows simultaneous updates in multiple DAC systems and features a zero override function for system calibration cycles.
- TTL and CMOS Compatibility: Digital inputs are compatible with TTL and 5 V CMOS levels, ensuring ease of integration with most microprocessors.
Applications
The AD7224CQ is versatile and suitable for various applications, including:
- Industrial Automation: The device's precision and reliability make it ideal for industrial automation systems.
- Programmable Logic Controllers (PLCs): Its compatibility with microprocessors and low power consumption make it a good fit for PLCs.
- Medical Devices: The high accuracy and stability of the AD7224CQ are beneficial in medical device applications where precision is critical.
- Aerospace and Defense: The device's robust performance over a wide temperature range makes it suitable for aerospace and defense applications.
Q & A
- What is the resolution of the AD7224CQ?
The AD7224CQ has an 8-bit resolution.
- What is the typical power consumption of the AD7224CQ?
The typical power consumption is 35 mW with a single supply).
- Can the AD7224CQ operate with both single and dual supplies?
- What is the operating temperature range of the AD7224CQ?
- Is the AD7224CQ compatible with TTL and CMOS logic levels?
- What is the purpose of the double-buffered interface logic in the AD7224CQ?
- What is the maximum full-scale error of the AD7224CQ?
- Can the AD7224CQ be used in industrial automation?
- What is the output amplifier capability of the AD7224CQ?
- Does the AD7224CQ require external trims for full specified performance?
