Overview
The AD5684BRUZ-RL7 is a member of the nanoDAC+™ family from Analog Devices Inc. This device is a low-power, quad, 12-bit buffered voltage output digital-to-analog converter (DAC). It is designed to offer high relative accuracy and excellent DC performance, making it suitable for a variety of applications requiring precise analog output.
The AD5684BRUZ-RL7 features a compact 3 mm x 3 mm, 16-lead LFCSP package and operates from a single 2.7 V to 5.5 V supply. It includes a gain select pin, allowing for user-selectable gain of 1 or 2, and a reset select pin (RSTSEL) that ensures the DAC outputs power up to zero scale or midscale.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 12 | Bits | - |
| Relative Accuracy (INL) | ±1 | LSB | - |
| Differential Nonlinearity | ±1 | LSB | Guaranteed monotonic by design |
| Zero-Code Error | 0.4 to 1.5 | mV | All 0s loaded to DAC register |
| Offset Error | ±1.5 | mV | - |
| Gain Error | ±0.1% | of FSR | - |
| Output Voltage Settling Time | 5 to 7 | µs | ¼ to ¾ scale settling to ±2 LSB |
| Slew Rate | 0.8 | V/µs | - |
| Power Supply Range | 2.7 to 5.5 | V | - |
| Operating Temperature Range | -40 to +105 | °C | - |
| Power Consumption (Normal Mode) | 0.59 to 0.7 | mA | VDD = 2.7 V to 5.5 V |
| Power Consumption (Power-Down Mode) | 1 to 4 | µA | - |
Key Features
- High Relative Accuracy: The AD5684BRUZ-RL7 offers high relative accuracy with an INL of ±1 LSB, ensuring precise analog output.
- Low Power Consumption: The device operates in low power mode, consuming only 1.8 mW at 3 V and reducing to 4 µA in power-down mode.
- User Selectable Gain: A gain select pin allows for user-selectable gain of 1 or 2.
- Reset to Zero Scale or Midscale: 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.
- 50 MHz SPI Interface: The device features a versatile SPI interface that operates at clock rates up to 50 MHz, with readback or daisy-chain capabilities.
- High Drive Capability: The DAC can drive loads up to 20 mA, with 0.5 V from supply rails.
- Low Glitch and Crosstalk: The device exhibits low digital-to-analog glitch impulse and minimal digital and analog crosstalk.
Applications
- Digital Gain and Offset Adjustment: Suitable for applications requiring precise digital gain and offset adjustments.
- Programmable Attenuators: Can be used in programmable attenuator circuits.
- Process Control (PLC I/O Cards): Ideal for process control systems and PLC I/O cards.
- Industrial Automation: Used in various industrial automation applications.
- Data Acquisition Systems: Suitable for data acquisition systems requiring high accuracy and low power consumption.
Q & A
- What is the resolution of the AD5684BRUZ-RL7?
The AD5684BRUZ-RL7 has a resolution of 12 bits.
- What is the relative accuracy of the AD5684BRUZ-RL7?
The relative accuracy is ±1 LSB.
- What is the power supply range for the AD5684BRUZ-RL7?
The device operates from a single 2.7 V to 5.5 V supply.
- How much current does the AD5684BRUZ-RL7 consume in normal mode?
The device consumes 0.59 to 0.7 mA in normal mode at VDD = 2.7 V to 5.5 V.
- What is the power consumption in power-down mode?
The device consumes 1 to 4 µA in power-down mode.
- Does the AD5684BRUZ-RL7 have a user-selectable gain feature?
Yes, the device features a gain select pin allowing for user-selectable gain of 1 or 2.
- What is the maximum clock rate of the SPI interface?
The SPI interface operates at clock rates up to 50 MHz.
- What is the output voltage settling time of the AD5684BRUZ-RL7?
The output voltage settling time is 5 to 7 µs for ¼ to ¾ scale settling to ±2 LSB.
- Is the AD5684BRUZ-RL7 guaranteed to be monotonic?
Yes, the device is guaranteed monotonic by design.
- What are some common applications of the AD5684BRUZ-RL7?
Common applications include digital gain and offset adjustment, programmable attenuators, process control, industrial automation, and data acquisition systems.
