Overview
The AD7226KRZ-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 features four 8-bit DACs, each with an output buffer amplifier and interface logic, making it highly versatile for various applications. The AD7226KRZ-REEL 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. This design ensures precise matching and tracking between the DACs and eliminates the need for external trims or offset nulling.
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 | |
| Settling Time | 4 μs | |
| Output Current | Up to 5 mA | |
| Reference Voltage Range | 2 V to 12.5 V | Dual supplies; 10 V for single supply |
| Supply Voltage | 14.25 V to 16.5 V | Dual supply; VSS = –5 V ± 10% |
| Package | 20-Lead SOIC (Wide) |
Key Features
- Four 8-bit voltage-output DACs with output buffer amplifiers.
- No external trims required for full specified performance.
- Separate on-chip latches for each DAC.
- Microprocessor-compatible TTL/CMOS-compatible input port.
- Single-supply operation possible with a reference of 10 V.
- Compact 20-pin package (SOIC, DIP, CerDIP, SSOP, PLCC) for reduced board space.
- Laser-trimmed amplifiers eliminate the need for offset nulling.
- Extended temperature range operation.
Applications
- Process control.
- Automatic test equipment.
- Automatic calibration of large system parameters (e.g., gain/offset).
Q & A
- What is the resolution of the AD7226KRZ-REEL?
The AD7226KRZ-REEL has a resolution of 8 bits.
- What is the total unadjusted error of the AD7226KRZ-REEL?
The total unadjusted error is ±1 LSB max.
- Can the AD7226KRZ-REEL operate on a single supply?
- What is the settling time of the AD7226KRZ-REEL?
The settling time is 4 μs.
- How much output current can each DAC drive?
Each DAC can drive up to 5 mA of output current.
- What is the reference voltage range for the AD7226KRZ-REEL?
The reference voltage range is from 2 V to 12.5 V for dual supplies and 10 V for single supply operation.
- What types of packages are available for the AD7226KRZ-REEL?
The AD7226KRZ-REEL is available in 20-pin packages including SOIC, DIP, CerDIP, SSOP, and PLCC.
- Does the AD7226KRZ-REEL require external trims for performance?
No, the AD7226KRZ-REEL does not require external trims to achieve full specified performance.
- Is the AD7226KRZ-REEL compatible with microprocessors?
- What are some common applications of the AD7226KRZ-REEL?
