Overview
The AD5686RACPZ-RL7, produced by Analog Devices Inc., is a member of the nanoDAC+® family. This device is a quad, 16-bit, rail-to-rail, voltage output digital-to-analog converter (DAC). It features a 2.5 V, 2 ppm/°C internal reference and a gain select pin, allowing for full-scale output of either 2.5 V or 5 V. The AD5686R operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design, ensuring high accuracy and reliability.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 16 | 16 | 16 | Bits | |
| Relative Accuracy | ±2 | ±2 | ±2 | LSB | |
| Differential Nonlinearity | ±1 | ±1 | ±1 | LSB | Guaranteed monotonic by design |
| Output Voltage Range | 0 | 2 × VREF | V | Gain = 1 or 2, see Figure 23 | |
| Supply Voltage (VDD) | 2.7 | 5.5 | V | ||
| Logic Voltage (VLOGIC) | 1.62 | 5.5 | V | ||
| Power-Up Time | 2.5 | 2.5 | µs | Coming out of power-down mode; VDD = 5 V | |
| Current Consumption (Normal Mode) | 0.59 | 0.7 | 0.7 | mA | VDD = 2.7 V to 5.5 V, DAC outputs unloaded |
| Current Consumption (Power-Down Mode) | 1 | 4 | µA | All DACs powered down |
Key Features
- High Relative Accuracy: The AD5686R has a relative accuracy of ±2 LSB, ensuring high precision in digital-to-analog conversion.
- Low Drift Internal Reference: The device includes a 2.5 V, 2 ppm/°C internal reference, contributing to its high accuracy and stability.
- Power-Down Feature: Each channel can be powered down, reducing current consumption to 4 µA at 3 V, which is beneficial for power-sensitive applications.
- Versatile SPI Interface: The device operates with a SPI interface that supports clock rates up to 50 MHz and includes a VLOGIC pin for 1.8 V/3 V/5 V logic compatibility.
- Gain Selectability: The gain select pin allows for full-scale output of either 2.5 V or 5 V, providing flexibility in output voltage range.
- Power-On Reset Circuit: The device includes a power-on reset circuit and a RSTSEL pin to ensure DAC outputs power up to zero-scale or midscale and remain there until a valid write takes place).
Applications
The AD5686R is suitable for a variety of applications that require high precision and low power consumption, such as:
- Industrial Automation: For precise control and monitoring in industrial automation systems.
- Medical Devices: In medical equipment where high accuracy and reliability are crucial.
- Aerospace and Defense: The AD5686R-EP version supports defense and aerospace applications, adhering to AQEC standards).
- Test and Measurement Equipment: For applications requiring precise voltage output and low noise.
- Automotive Systems: In automotive systems that demand high reliability and precision.
Q & A
- What is the resolution of the AD5686R?
The AD5686R has a resolution of 16 bits).
- What is the relative accuracy of the AD5686R?
The relative accuracy of the AD5686R is ±2 LSB).
- What is the operating voltage range of the AD5686R?
The AD5686R operates from a single 2.7 V to 5.5 V supply).
- What is the current consumption in normal mode and power-down mode?
In normal mode, the current consumption is typically 0.7 mA, and in power-down mode, it is 4 µA at 3 V).
- Does the AD5686R have an internal reference?
Yes, the AD5686R includes a 2.5 V, 2 ppm/°C internal reference).
- What is the maximum clock rate of the SPI interface?
The SPI interface operates at clock rates up to 50 MHz).
- What is the purpose of the RSTSEL pin?
The RSTSEL pin ensures that the DAC outputs power up to zero-scale or midscale and remain there until a valid write takes place).
- What are the available package options for the AD5686R?
The AD5686R is available in 16-Lead LFCSP and TSSOP packages).
- Is the AD5686R suitable for aerospace and defense applications?
Yes, the AD5686R-EP version supports defense and aerospace applications, adhering to AQEC standards).
- What is the power-up time of the AD5686R?
The power-up time is 2.5 µs coming out of power-down mode with VDD = 5 V).
