Overview
The AD7224LPZ-REEL is a precision 8-bit, voltage-output, digital-to-analog converter (DAC) with an integrated output amplifier and double-buffered interface logic. Fabricated using Analog Devices' high-speed Linear Compatible CMOS (LC2MOS) process, this device allows for the integration of high-speed digital logic and precision analog circuits on the same chip. The AD7224 does not require external trims to achieve its full specified performance, making it a reliable choice for various applications.
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 | |
| 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 |
Key Features
- Double-buffered interface logic with input and DAC registers, allowing simultaneous updates in systems with multiple AD7224s.
- No external trims required for full specified performance.
- Integrated output amplifier capable of developing +10 V across a 2 kΩ load.
- Logic inputs are TTL and CMOS (5 V) level compatible and speed-compatible with most 8-bit microprocessors.
- RESET line functions as a zero override for system calibration cycles.
- Fabricated in high-speed LC2MOS process for integrating high-speed digital and precision analog circuits.
Applications
- Industrial control systems requiring precise analog output.
- Automotive systems needing reliable and accurate digital-to-analog conversion.
- Medical devices that demand high precision and reliability in analog output.
- Aerospace and defense applications where robust and accurate DACs are essential.
- Any system requiring simultaneous update of multiple DACs.
Q & A
- What is the resolution of the AD7224LPZ-REEL?
The AD7224LPZ-REEL has an 8-bit resolution.
- What is the total unadjusted error of the AD7224LPZ-REEL?
The total unadjusted error is ±2 LSB max at VDD = +15 V ± 5% and VREF = +10 V.
- Is the AD7224LPZ-REEL compatible with TTL and CMOS logic levels?
- What is the range of input reference voltage for the AD7224LPZ-REEL?
The input reference voltage range is from +2 V to +12.5 V for dual supply operation and +10 V for single supply operation.
- What is the capability of the integrated output amplifier?
The output amplifier is capable of developing +10 V across a 2 kΩ load.
- Does the AD7224LPZ-REEL require external trims for full performance?
No, the AD7224LPZ-REEL does not require external trims to achieve its full specified performance.
- How does the RESET line function in the AD7224LPZ-REEL?
The RESET line functions as a zero override for system calibration cycles and can reset both registers to zero.
- What is the purpose of the double-buffered interface logic in the AD7224LPZ-REEL?
The double-buffered interface logic allows for simultaneous updates in systems containing multiple AD7224s.
- In what process is the AD7224LPZ-REEL fabricated?
The AD7224LPZ-REEL is fabricated in the high-speed Linear Compatible CMOS (LC2MOS) process.
- What are some typical applications of the AD7224LPZ-REEL?
Typical applications include industrial control systems, automotive systems, medical devices, and aerospace and defense systems.
