Overview
The AD7226KPZ-REEL, produced by Analog Devices Inc., is a quad 8-bit voltage-output digital-to-analog converter (DAC) integrated into a single monolithic chip. This device includes four 8-bit DACs, each with an output buffer amplifier and interface logic, eliminating the need for external trims to achieve full specified performance. The AD7226 is fabricated using an all ion-implanted high speed Linear Compatible CMOS (LC2MOS) process, allowing for the integration of high-speed digital logic and precision analog circuits on the same chip.
Key Specifications
| Parameter | Unit | Conditions/Comments |
|---|---|---|
| Resolution | 8 Bits | |
| Total Unadjusted Error | ±1 LSB max | VDD = 15 V ± 5%, VREF = 10 V |
| Relative Accuracy | ±0.5 LSB max | |
| Differential Nonlinearity | ±0.5 LSB max | |
| Reference Voltage Range | 2 V to 12.5 V | Dual supplies |
| Single Supply Operation | 10 V | |
| Output Current | Up to 5 mA | |
| Settling Time | 3 μs | |
| Temperature Range | -40°C to 85°C | |
| Package | 20-Lead Flatpack, PLCC, SOIC, SSOP |
Key Features
- Four 8-bit DACs with output buffer amplifiers on a single chip.
- No external trims required for full specified performance.
- Microprocessor-compatible TTL/CMOS-compatible input port.
- Single-supply operation possible with a reference of 10 V.
- DAC-to-DAC matching due to fabrication on the same chip.
- Compact 20-pin package options (Flatpack, PLCC, SOIC, SSOP) to reduce board space requirements.
- Laser-trimmed output buffer amplifiers to eliminate offset nulling.
Applications
- Process Control
- Automatic Test Equipment
- Automatic Calibration of Large System Parameters (e.g., Gain/Offset)
Q & A
- What is the resolution of the AD7226KPZ-REEL DAC?
The AD7226KPZ-REEL has a resolution of 8 bits.
- What is the total unadjusted error of the AD7226KPZ-REEL?
The total unadjusted error is ±1 LSB max.
- Can the AD7226KPZ-REEL operate on a single supply?
- What is the output current capability of the buffer amplifiers?
The buffer amplifiers can drive up to 5 mA of output current.
- What is the settling time of the AD7226KPZ-REEL?
The settling time is 3 μs.
- What are the package options for the AD7226KPZ-REEL?
The package options include 20-Lead Flatpack, PLCC, SOIC, and SSOP.
- Is the AD7226KPZ-REEL compatible with microprocessors?
- What is the temperature range for the AD7226KPZ-REEL?
The temperature range is -40°C to 85°C.
- Do the DACs require external trims for full performance?
No, the AD7226KPZ-REEL does not require external trims to achieve full specified performance.
- What is the reference voltage range for the AD7226KPZ-REEL?
The reference voltage range is from 2 V to 12.5 V with dual supplies.
