Overview
The AD5687RBRUZ, part of the nanoDAC+™ family from Analog Devices Inc., is a low-power, dual, 12-bit buffered voltage output digital-to-analog converter (DAC). This device is designed for high precision and reliability, making it suitable for a variety of applications requiring accurate analog output. The AD5687RBRUZ operates from a single 2.7 V to 5.5 V supply and includes a 2.5 V, 2 ppm/°C internal reference. It features a gain select pin that allows for full-scale output of either 2.5 V or 5 V. The device is available in a 16-lead TSSOP package and is guaranteed monotonic by design, ensuring high accuracy and minimal error.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits | |
| Relative Accuracy | ±0.12 | ±2 | ±1 | LSB | |
| Differential Nonlinearity | ±1 | ±1 | LSB | Guaranteed monotonic by design | |
| Gain Error | ±0.1% | FSR | |||
| Offset Error | ±1.5 | mV | |||
| Output Voltage Settling Time | 5 | 7 | µs | ¼ to ¾ scale settling to ±2 LSB | |
| Slew Rate | 0.8 | V/µs | |||
| Supply Voltage | 2.7 | 5.5 | V | ||
| Logic Supply Voltage | 1.62 | 5.5 | V | ||
| Power Consumption (Normal Mode) | 0.59 | 0.7 | mA | VDD = 2.7 V to 5.5 V, both DACs active | |
| Power Consumption (Power-Down Mode) | 1 | 4 | µA | At 3 V, both DACs powered down |
Key Features
- High Relative Accuracy: ±2 LSB maximum at 12 bits, ensuring high precision in analog output.
- Low Power Consumption: Operates from a single 2.7 V to 5.5 V supply with low current consumption, especially in power-down mode (4 µA at 3 V).
- Compact Package: Available in a 16-lead TSSOP package, making it suitable for space-constrained designs.
- Internal Reference: Includes a 2.5 V, 2 ppm/°C internal reference, which is enabled by default.
- Gain Selectability: Features a gain select pin allowing for full-scale output of either 2.5 V or 5 V.
- Power-On Reset and RSTSEL Pin: Ensures DAC outputs power up to zero scale or midscale and remain there until a valid write takes place.
- Per Channel Power-Down Feature: Reduces current consumption significantly when in power-down mode.
- Versatile SPI Interface: Operates at clock rates up to 50 MHz, facilitating high-speed communication.
Applications
- Industrial Automation: Suitable for control systems and monitoring applications where precise analog outputs are required.
- Medical Devices: Used in medical equipment that demands high accuracy and reliability in analog signal generation.
- Aerospace and Defense: Ideal for systems requiring low power consumption and high precision in harsh environments.
- Automotive Systems: Applicable in automotive control systems, sensors, and other precision analog output requirements.
- Test and Measurement Equipment: Utilized in various test and measurement instruments for generating precise analog signals.
Q & A
- What is the resolution of the AD5687RBRUZ DAC?
The AD5687RBRUZ has a resolution of 12 bits.
- What is the supply voltage range for the AD5687RBRUZ?
The device operates from a single 2.7 V to 5.5 V supply.
- What is the gain error of the AD5687RBRUZ?
The gain error is ±0.1% of full-scale range (FSR).
- Does the AD5687RBRUZ have an internal reference?
Yes, it includes a 2.5 V, 2 ppm/°C internal reference.
- What is the power consumption in normal mode?
The power consumption is typically 0.59 mA to 0.7 mA when both DACs are active.
- How does the power-on reset feature work?
The power-on reset circuit and RSTSEL pin ensure that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place.
- What is the maximum clock rate for the SPI interface?
The SPI interface operates at clock rates up to 50 MHz.
- What is the output voltage settling time for the AD5687RBRUZ?
The output voltage settling time is 5 to 7 µs for ¼ to ¾ scale settling to ±2 LSB.
- Is the AD5687RBRUZ guaranteed monotonic by design?
Yes, the device is guaranteed monotonic by design.
- What is the typical offset error of the AD5687RBRUZ?
The typical offset error is ±1.5 mV.
