Overview
The AD7391ARU-REEL, produced by Analog Devices Inc., is a 10-bit digital-to-analog converter (DAC) designed for single-supply operation. This device is part of the AD7390/AD7391 family, which offers low power consumption and ease of use in 3 V systems. Built using a CBCMOS process, the AD7391 is ideal for battery-operated applications due to its low current consumption of less than 100 µA over a supply voltage range of 2.7 V to 5.5 V. The device features a rail-to-rail output and an external reference input, allowing for a full-scale voltage output that can be set equal to the positive supply voltage or any value in between.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 10 bits |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Current Consumption | < 100 µA |
| Settling Time | 70 µs (typ) |
| Digital Interface | Serial (3-Wire, SPI, QSPI) |
| Output Type | Voltage - Buffered |
| Voltage Reference | External |
| Package | 8-SOIC, TSSOP-8 |
| Operating Temperature Range | -40°C to +125°C |
| Integral Nonlinearity Error | ±2 LSB (max) |
Key Features
- Low power consumption: Less than 100 µA current consumption.
- Single-supply operation: Compatible with supply voltages from 2.7 V to 5.5 V.
- Rail-to-rail output: Full-scale voltage output can be set equal to the positive supply voltage or any value in between.
- High-speed serial interface: SPI and QSPI compatible with Schmitt trigger inputs.
- External reference input: Allows for flexible voltage output settings.
- CLR pin for reset: Resets the DAC register to zero-scale for power-on reset or system failure recovery.
- Compact packaging: Available in 8-SOIC and TSSOP-8 packages for space-constrained designs.
Applications
- Automotive systems: Suitable for the extended industrial and automotive temperature ranges.
- Portable communications: Ideal for battery-operated devices due to low power consumption.
- Digitally controlled calibration: Useful in applications requiring precise analog output control.
- Battery-operated devices: Low current consumption makes it suitable for devices powered by batteries.
Q & A
- What is the resolution of the AD7391ARU-REEL?
The AD7391ARU-REEL has a 10-bit resolution.
- What is the supply voltage range for the AD7391ARU-REEL?
The device operates over a supply voltage range of 2.7 V to 5.5 V.
- How much current does the AD7391ARU-REEL consume?
The device consumes less than 100 µA of current.
- What is the settling time of the AD7391ARU-REEL?
The settling time is typically 70 µs.
- What type of digital interface does the AD7391ARU-REEL use?
The device uses a serial (3-Wire, SPI, QSPI) digital interface.
- Can the AD7391ARU-REEL be used in automotive applications?
- What is the operating temperature range of the AD7391ARU-REEL?
The operating temperature range is -40°C to +125°C.
- What type of packaging is available for the AD7391ARU-REEL?
The device is available in 8-SOIC and TSSOP-8 packages.
- Does the AD7391ARU-REEL have a reset feature?
- Is the AD7391ARU-REEL RoHS compliant?
