Overview
The AD5531BRU, produced by Analog Devices Inc., is a 14-bit serial input, voltage output digital-to-analog converter (DAC). This component is part of the AD5530/AD5531 family, which includes pin-compatible 12- and 14-bit DACs. The AD5531BRU is designed to provide high precision and versatility in various applications, utilizing a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The DAC outputs a voltage range of up to ±10 V, making it suitable for a wide range of industrial and commercial uses.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 14 | Bits | |
| Relative Accuracy | ±2 LSB max | ||
| Differential Nonlinearity | ±1 LSB max | Guaranteed monotonic over temperature | |
| Zero-Scale Error | ±8 LSB max | Typically within ±1 LSB | |
| Full-Scale Error | ±8 LSB max | Typically within ±1 LSB | |
| Gain Error | ±4 LSB typ | ||
| Gain Temperature Coefficient | 0.5 ppm FSR/°C typ, 10 ppm FSR/°C max | ||
| Reference Input Range | 0 to 4.096 V | ||
| Output Voltage Range | ±8.192 V DC | ||
| Output Voltage Settling Time | 20 μs typ | Full-scale change to ±½ LSB | |
| Slew Rate | 1.3 V/μs typ | ||
| Digital Feedthrough | 0.5 nV-s typ | ||
| Power Consumption in Power-Down | 150 μA max, typically 50 μA | ||
| Temperature Range | −40°C to +85°C |
Key Features
- Pin-Compatible 14-Bit DAC: The AD5531BRU is part of a family that includes pin-compatible 12- and 14-bit DACs, making it easy to upgrade or downgrade depending on the application requirements.
- Versatile 3-Wire Serial Interface: Compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, allowing for flexible integration into various systems.
- Voltage Output Range: Provides a maximum output voltage range of ±10 V, which is buffered by a gain of two amplifier and referenced to the potential at DUTGND.
- Data Readback and Daisy-Chaining: Allows the user to read the contents of the DAC register via the SDO pin and supports daisy-chaining for multiple DAC configurations.
- Power-Down and Clear Functions: Includes a power-down pin (PD) for low power state and a CLR pin to clear the output to a user-defined voltage.
- High Precision and Linearity: Ensures high accuracy with features like guaranteed monotonicity over temperature and low differential nonlinearity.
Applications
The AD5531BRU is suitable for a variety of applications that require high precision and reliable digital-to-analog conversion. These include:
- Industrial Control Systems: For precise control over industrial processes such as temperature, pressure, and flow rate.
- Medical Devices: In medical equipment where accurate voltage outputs are critical, such as in patient monitoring systems and diagnostic devices.
- Aerospace and Defense: For applications requiring high reliability and precision in harsh environments.
- Automotive Systems: In automotive control systems, including engine control, transmission control, and safety systems.
- Test and Measurement Equipment: For calibration and testing purposes where precise voltage outputs are necessary.
Q & A
- What is the resolution of the AD5531BRU DAC?
The AD5531BRU has a resolution of 14 bits.
- What is the output voltage range of the AD5531BRU?
The output voltage range is up to ±10 V.
- What types of serial interfaces does the AD5531BRU support?
The AD5531BRU supports SPI, QSPI, MICROWIRE, and DSP interface standards.
- Does the AD5531BRU support data readback and daisy-chaining?
Yes, it supports data readback via the SDO pin and daisy-chaining for multiple DAC configurations.
- How does the power-down function work on the AD5531BRU?
The power-down function allows the DAC to be put into a low power state using the PD pin, reducing power consumption to typically 50 μA.
- What is the temperature range for the AD5531BRU?
The temperature range is −40°C to +85°C.
- What is the typical output voltage settling time for the AD5531BRU?
The typical output voltage settling time is 20 μs for a full-scale change to ±½ LSB.
- Is the AD5531BRU guaranteed to be monotonic over temperature?
Yes, the AD5531BRU is guaranteed to be monotonic over temperature.
- What is the slew rate of the AD5531BRU?
The slew rate is 1.3 V/μs typical.
- What package type is the AD5531BRU available in?
The AD5531BRU is available in a 16-lead TSSOP package.
