Overview
The AD5684ARUZ, part of the nanoDAC+™ family from Analog Devices Inc., 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 various industrial and automotive applications. It operates from a single 2.7 V to 5.5 V supply and features a versatile SPI interface with clock rates up to 50 MHz. The AD5684ARUZ also includes a gain select pin, allowing for full-scale output of 2.5 V or 5 V, and a power-on reset circuit that ensures the DAC outputs power up to zero scale or midscale.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 | Bits |
| Relative Accuracy (INL) | ±1 LSB | |
| Differential Nonlinearity (DNL) | ±1 LSB | |
| Total Unadjusted Error (TUE) | ±0.1% of FSR | |
| Offset Error | ±1.5 mV | |
| Gain Error | ±0.1% of FSR | |
| Supply Voltage | 2.7 V to 5.5 V | |
| Operating Temperature | -40°C to +105°C | |
| Package Type | 16-lead TSSOP | |
| Settling Time | 7 µs (¼ to ¾ scale settling to ±2 LSB) | |
| Power Consumption (Active) | 1.8 mW at 3 V | |
| Power Consumption (Power-Down) | 4 µA at 3 V |
Key Features
- High relative accuracy (INL): ±1 LSB maximum
- Excellent DC performance: Total unadjusted error ±0.1% of FSR maximum, offset error ±1.5 mV maximum, and gain error ±0.1% of FSR maximum
- Low power consumption: 1.8 mW at 3 V and 4 µA in power-down mode
- Versatile SPI interface with clock rates up to 50 MHz and 1.8 V/3 V/5 V logic compatibility
- User-selectable gain of 1 or 2 (GAIN pin)
- Reset to zero scale or midscale (RSTSEL pin)
- Per-channel power-down feature
- High drive capability: 20 mA, 0.5 V from supply rails
- Low glitch: 0.5 nV-sec
Applications
- Programmable attenuators
- Process control (PLC I/O cards)
- Industrial automation
- Data acquisition systems
Q & A
- What is the resolution of the AD5684ARUZ?
The AD5684ARUZ has a resolution of 12 bits. - What is the operating voltage range of the AD5684ARUZ?
The device operates from a single 2.7 V to 5.5 V supply. - What is the maximum clock rate of the SPI interface?
The SPI interface operates at clock rates up to 50 MHz. - What are the package options for the AD5684ARUZ?
The device is available in 3 mm × 3 mm, 16-lead LFCSP and 16-lead TSSOP packages. - How does the power-on reset circuit function?
The power-on reset circuit 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 power consumption in active and power-down modes?
The device consumes 1.8 mW at 3 V in active mode and 4 µA at 3 V in power-down mode. - What is the settling time of the AD5684ARUZ?
The settling time is 7 µs (¼ to ¾ scale settling to ±2 LSB). - Is the AD5684ARUZ guaranteed monotonic?
Yes, the device is guaranteed monotonic by design. - What are some typical applications of the AD5684ARUZ?
Typical applications include programmable attenuators, process control, industrial automation, and data acquisition systems. - Does the AD5684ARUZ support daisy-chain operation?
Yes, the device supports daisy-chain operation as well as readback functionality.
