Overview
The AD7224KRZ-18REEL is a precision 8-bit, voltage-output, digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is integrated on a monolithic CMOS chip and features an output amplifier and double-buffered interface logic. The AD7224 does not require external trims to achieve its full specified performance, making it a reliable choice for various applications. It is fabricated using an all ion-implanted high-speed Linear Compatible CMOS (LC2MOS) process, allowing for the integration of high-speed digital logic circuits and precision analog circuits on the same chip.
Key Specifications
| Parameter | Units | Conditions/Comments |
|---|---|---|
| Resolution | 8 Bits | |
| Total Unadjusted Error | ±2 LSB max | VDD = +15 V ± 5%, VREF = +10 V |
| Relative Accuracy | ±1 LSB max | |
| Differential Nonlinearity | ±1 LSB max | |
| Full-Scale Error | ±3/2 LSB max | |
| Full-Scale Temperature Coefficient | ±20 ppm/°C max | @ 25°C |
| Input Reference Voltage Range | +2 V to +12.5 V (dual supply), +10 V (single supply) | |
| Output Amplifier Capability | +10 V across a 2 kΩ load | |
| Logic Input Compatibility | TTL and CMOS (5 V) level compatible | |
| Operating Temperature Range | –40°C to +85°C (K, L, B, C versions), –55°C to +125°C (T, U versions) |
Key Features
- Double-buffered interface logic with two 8-bit registers (input register and DAC register)
- No external trims required for full specified performance
- Output amplifier capable of developing +10 V across a 2 kΩ load
- Logic inputs compatible with TTL and CMOS (5 V) levels
- Speed compatible with most 8-bit microprocessors
- RESET line functions as a zero override for system calibration cycles when both registers are transparent
Applications
The AD7224KRZ-18REEL is suitable for a variety of applications requiring precise digital-to-analog conversion, such as:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Test and measurement equipment
Q & A
- What is the resolution of the AD7224KRZ-18REEL?
The AD7224KRZ-18REEL has a resolution of 8 bits. - What is the total unadjusted error of the AD7224KRZ-18REEL?
The total unadjusted error is ±2 LSB max when VDD = +15 V ± 5% and VREF = +10 V. - Is the AD7224KRZ-18REEL compatible with TTL and CMOS logic levels?
- What is the operating temperature range of the AD7224KRZ-18REEL?
The operating temperature range is –40°C to +85°C for K, L, B, C versions, and –55°C to +125°C for T, U versions.- Does the AD7224KRZ-18REEL require external trims for full performance?
No, the AD7224KRZ-18REEL does not require external trims to achieve its full specified performance.- What is the capability of the output amplifier in the AD7224KRZ-18REEL?
The output amplifier is capable of developing +10 V across a 2 kΩ load.- How does the double-buffered interface logic work in the AD7224KRZ-18REEL?
The double-buffered interface logic consists of two 8-bit registers (an input register and a DAC register). Only the data held in the DAC register determines the analog output. The double buffering allows simultaneous updates in systems containing multiple AD7224s.- What is the function of the RESET line when both registers are transparent?
The RESET line functions as a zero override for system calibration cycles when both registers are transparent.- Is the AD7224KRZ-18REEL suitable for use in high-speed digital logic circuits?
- What are some common applications of the AD7224KRZ-18REEL?
The AD7224KRZ-18REEL is commonly used in industrial control systems, medical devices, aerospace and defense systems, automotive systems, and test and measurement equipment. - What is the operating temperature range of the AD7224KRZ-18REEL?
