Overview
The AD5684ARUZ-RL7, produced by Analog Devices Inc., is a member of the nanoDAC+™ family. It is a low power, quad, 12-bit buffered voltage output Digital-to-Analog Converter (DAC). This device is designed for high accuracy and low power consumption, making it suitable for a variety of applications requiring precise analog output.
The AD5684 operates from a single 2.7 V to 5.5 V supply and features a gain select pin that allows for full-scale output of either 2.5 V or 5 V. It is available in a 3 mm × 3 mm LFCSP and a 16-lead TSSOP package.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits | |
| Relative Accuracy | ±0.12 | ±2 | ±1 | LSB | Gain = 1 or 2 |
| Differential Nonlinearity | ±1 | ±1 | ±1 | LSB | Guaranteed monotonic by design |
| Zero-Code Error | 0.4 | 4 | 1.5 | mV | All 0s loaded to DAC register |
| Offset Error | ±0.1 | ±4 | ±1.5 | mV | |
| Full-Scale Error | 0.1% | FSR | |||
| VDD | 2.7 | 5.5 | V | ||
| Power Consumption (Normal Mode) | 0.59 | 0.7 | mA | Interface inactive, all DACs active, DAC outputs unloaded | |
| Power Consumption (Power-Down Mode) | 4 | µA | All DACs powered down | ||
| Output Voltage Settling Time | 5 | 7 | µs | ¼ to ¾ scale settling to ±2 LSB | |
| Slew Rate | 0.8 | V/µs |
Key Features
- High Accuracy: The AD5684 features high relative accuracy with ±0.12 LSB to ±2 LSB and guaranteed monotonicity by design.
- Low Power Consumption: Operates with low power consumption, with normal mode current as low as 0.59 mA and power-down mode current as low as 4 µA at 3 V.
- Flexible Gain Options: Includes a gain select pin allowing for full-scale output of either 2.5 V or 5 V.
- Versatile Interface: Employs a versatile SPI interface that operates at clock rates up to 50 MHz and supports 1.8 V/3 V/5 V logic.
- Power-On Reset and RSTSEL Pin: Ensures that the DAC outputs power up to zero scale or midscale and remain at that level until a valid write takes place.
- Per-Channel Power-Down Feature: Reduces current consumption to 4 µA at 3 V while in power-down mode.
Applications
- Industrial Automation: Suitable for control systems and automation where precise analog outputs are required.
- Medical Devices: Used in medical equipment that demands high accuracy and low power consumption.
- Aerospace and Defense: Applicable in various aerospace and defense systems requiring reliable and accurate analog outputs.
- Consumer Electronics: Can be used in consumer electronics such as audio equipment and other devices needing precise voltage outputs.
- Automotive Systems: Suitable for automotive applications where low power and high accuracy are critical.
Q & A
- What is the resolution of the AD5684?
The AD5684 has a resolution of 12 bits.
- What are the available package options for the AD5684?
The AD5684 is available in a 3 mm × 3 mm LFCSP and a 16-lead TSSOP package.
- What is the operating voltage range of the AD5684?
The AD5684 operates from a single 2.7 V to 5.5 V supply.
- What is the maximum power consumption of the AD5684 in normal mode?
The maximum power consumption in normal mode is approximately 0.7 mA.
- How does the power-down feature work on the AD5684?
The power-down feature reduces the current consumption to 4 µA at 3 V, significantly lowering power usage when not in active operation.
- What is the maximum clock rate for the SPI interface of the AD5684?
The SPI interface operates at clock rates up to 50 MHz.
- What is the purpose of the RSTSEL pin on the AD5684?
The RSTSEL pin ensures that the DAC outputs power up to zero scale or midscale and remain at that level until a valid write takes place.
- What is the slew rate of the AD5684?
The slew rate of the AD5684 is 0.8 V/µs.
- What is the output voltage settling time for the AD5684?
The output voltage settling time is 5 to 7 µs for ¼ to ¾ scale settling to ±2 LSB.
- Is the AD5684 guaranteed to be monotonic?
Yes, the AD5684 is guaranteed monotonic by design.
