Overview
The AD7224KP, produced by Analog Devices Inc., is a precision 8-bit voltage-output digital-to-analog converter (DAC) integrated with an output amplifier and double-buffered interface logic on a monolithic CMOS chip. This device is fabricated using Analog Devices' Linear Compatible CMOS (LC2MOS) process, which allows for the integration of high-speed digital logic and precision analog circuits on the same chip. The AD7224KP is designed for low power consumption, typically 35 mW with a single supply, and offers excellent total unadjusted error of less than 1 LSB over the full operating temperature range.
Key Specifications
| Parameter | Value | Units | Conditions/Comments |
|---|---|---|---|
| Resolution | 8 | Bits | |
| Total Unadjusted Error | ±2 (±1 for some versions) | LSB max | VDD = +15 V ± 5%, VREF = +10 V |
| Relative Accuracy | ±1 (±1/2 for some versions) | LSB max | |
| Differential Nonlinearity | ±1 | LSB max | |
| Full-Scale Error | ±3/2 (±1 for some versions) | 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 | ||
| Supply Voltage Range | Single supply: +10 V, Dual supply: +2 V to +12.5 V |
Key Features
- Single or Dual Supply Operation: The AD7224KP can operate from a single power supply rail or with dual supplies, enhancing performance for some parameters.
- Low Power Consumption: Typical power consumption is 35 mW with a single supply.
- Double Buffered Interface Logic: Allows simultaneous update in systems containing multiple AD7224KP devices.
- High Speed Logic: Compatible with most 8-bit microprocessors and supports TTL and 5 V CMOS levels.
- Zero Override Function: Useful for system calibration cycles.
- No External Trims Required: Achieves full specified performance without the need for external trims.
Applications
The AD7224KP is suitable for various applications requiring precise digital-to-analog conversion, such as industrial control systems, medical devices, and automotive systems. Its low power consumption and high accuracy make it ideal for battery-powered devices and systems where reliability and precision are critical.
Q & A
- What is the resolution of the AD7224KP? The resolution of the AD7224KP is 8 bits.
- What is the typical power consumption of the AD7224KP? The typical power consumption is 35 mW with a single supply.
- Can the AD7224KP operate with both single and dual supplies? Yes, it can operate with either a single supply or dual supplies.
- What is the operating temperature range of the AD7224KP? The operating temperature range is –40°C to +85°C.
- Is the AD7224KP compatible with TTL and CMOS logic levels? Yes, it is compatible with both TTL and 5 V CMOS logic levels.
- Does the AD7224KP require external trims for full performance? No, it does not require external trims to achieve full specified performance.
- What is the function of the double buffered interface logic in the AD7224KP? The double buffered interface logic allows for simultaneous update in systems containing multiple AD7224KP devices.
- What is the maximum output voltage of the AD7224KP's output amplifier? The output amplifier can develop up to +10 V across a 2 kΩ load.
- Is the AD7224KP suitable for battery-powered devices? Yes, its low power consumption makes it suitable for battery-powered devices.
- What is the purpose of the zero override function in the AD7224KP? The zero override function is useful for system calibration cycles.
