Overview
The AD7390ARZ, produced by Analog Devices Inc., is a 12-bit digital-to-analog converter (DAC) designed for single-supply operation. This device is part of the AD7390/AD7391 family, which includes both 10-bit and 12-bit versions. The AD7390ARZ operates from a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for battery-operated applications due to its low power consumption of less than 100 µA. Built using a CBCMOS process, this DAC offers low cost and ease of use in various systems, including automotive and portable communications devices.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Power Consumption | < 100 µA |
| Output Voltage Range | 0 to VDD (rail-to-rail) |
| Interface | SPI and QSPI compatible, 3-wire serial interface |
| Temperature Range | -40°C to +85°C (extended industrial), -40°C to +125°C (automotive for AD7391AR) |
| Package Types | SO-8, TSSOP-8 |
Key Features
- Low Power Consumption: Less than 100 µA, ideal for battery-operated applications.
- Single-Supply Operation: Operates from a single supply voltage between 2.7 V and 5.5 V.
- High-Speed Interface: SPI and QSPI compatible, 3-wire serial interface with Schmitt trigger inputs.
- Rail-to-Rail Output: Output voltage range from 0 to VDD.
- Dual Buffering: Separate serial-input register and DAC register for preloading data without disturbing the current DAC output.
- CLR Pin: Allows resetting the DAC register to zero-scale for power-on reset or system failure recovery.
Applications
- Automotive Systems: Suitable for automotive applications due to its extended temperature range and low power consumption.
- Portable Communications: Ideal for portable communication devices requiring low power and compact design.
- Digitally Controlled Calibration: Used in applications requiring precise digital calibration.
- Battery-Operated Devices: Suitable for any battery-operated device needing a low-power DAC solution.
Q & A
- What is the resolution of the AD7390ARZ?
The AD7390ARZ has a 12-bit resolution.
- What is the supply voltage range for the AD7390ARZ?
The supply voltage range is from 2.7 V to 5.5 V.
- How much power does the AD7390ARZ consume?
The AD7390ARZ consumes less than 100 µA.
- What type of interface does the AD7390ARZ use?
The AD7390ARZ uses an SPI and QSPI compatible, 3-wire serial interface.
- What is the temperature range for the AD7390ARZ?
The temperature range is from -40°C to +85°C (extended industrial).
- What package types are available for the AD7390ARZ?
The AD7390ARZ is available in SO-8 and TSSOP-8 packages.
- Can the AD7390ARZ be used in automotive applications?
Yes, the AD7390ARZ is suitable for automotive applications due to its extended temperature range and low power consumption.
- How does the CLR pin function on the AD7390ARZ?
The CLR pin allows resetting the DAC register to zero-scale for power-on reset or system failure recovery.
- Is the AD7390ARZ compatible with microcontrollers?
Yes, the AD7390ARZ is compatible with microcontrollers through its SPI and QSPI interface.
- What is the output voltage range of the AD7390ARZ?
The output voltage range is from 0 to VDD (rail-to-rail).
