Overview
The AD7224LN, 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 single monolithic CMOS chip. This device is fabricated using Analog Devices' Linear Compatible CMOS (LC2MOS) process, which enables the integration of high-speed digital logic and precision analog circuits. The AD7224LN 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 | Units | 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 |
| Supply Voltage Range | +2 V to +12.5 V (dual supply), +10 V (single supply) | |
| Output Amplifier Capability | +10 V across a 2 kΩ load |
Key Features
- Single or Dual Supply Operation: The AD7224LN can operate from a single power supply rail or with dual supplies for enhanced performance.
- Low Power Consumption: Typical power consumption is 35 mW with a single supply.
- High Accuracy: Excellent total unadjusted error of less than 1 LSB over the full operating temperature range.
- Double Buffered Interface Logic: Allows simultaneous update of the DAC in multiple DAC systems and features a zero override function for system calibration.
- High Speed Logic: Compatible with most 8-bit microprocessors and supports TTL and 5 V CMOS levels.
- Internal Input Protection: Static-protected MOS gates with typical input currents of less than 1 nA.
Applications
The AD7224LN is suitable for various applications requiring precise digital-to-analog conversion, such as:
- Industrial control systems
- Medical equipment
- Aerospace and defense systems
- Automotive systems
- Test and measurement instruments
Q & A
- What is the resolution of the AD7224LN?
The AD7224LN has an 8-bit resolution.
- What is the typical power consumption of the AD7224LN?
The typical power consumption is 35 mW with a single supply.
- Can the AD7224LN operate with both single and dual supplies?
- What is the total unadjusted error of the AD7224LN?
The total unadjusted error is less than 1 LSB over the full operating temperature range.
- Is the AD7224LN compatible with TTL and CMOS logic levels?
- What is the purpose of the double buffered interface logic in the AD7224LN?
The double buffered interface logic allows simultaneous update of the DAC in multiple DAC systems and features a zero override function for system calibration.
- What is the output amplifier capability of the AD7224LN?
The output amplifier can develop +10 V across a 2 kΩ load.
- Is the AD7224LN still in production?
No, the AD7224LN is obsolete and no longer manufactured. Available substitutes should be considered.
- What type of fabrication process is used for the AD7224LN?
The AD7224LN is fabricated using Analog Devices' Linear Compatible CMOS (LC2MOS) process.
- Does the AD7224LN require external trims for full specified performance?
No, the AD7224LN does not require external trims to achieve full specified performance.
