Overview
The AD7391ARUZ-REEL is a 10-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. This device is part of the AD7390/AD7391 family, which includes pin-compatible 10-bit and 12-bit DACs. The AD7391 is designed for single-supply operation and is built using a CBCMOS process, offering low cost and ease of use in 3 V systems. It is particularly suited for battery-operated applications due to its low power consumption of less than 100 µA over a supply voltage range of 2.7 V to 5.5 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 10 bits | |
| Supply Voltage Range | 2.7 V to 5.5 V | V |
| Current Consumption | < 100 µA | µA |
| Relative Accuracy (INL) | ±1.6 LSB (at 25°C), ±2.0 LSB (at -40°C to 85°C) | LSB |
| Differential Nonlinearity (DNL) | ±0.9 LSB (at 25°C), ±1 LSB (at -40°C to 85°C) | LSB |
| Zero-Scale Error | 4.0 mV max | mV |
| Full-Scale Voltage Error | ±8 mV max | mV |
| Settling Time | 70 µs | µs |
| Package Type | 8-TSSOP |
Key Features
- Single-Supply Operation: The AD7391 operates from a single supply voltage between 2.7 V and 5.5 V, making it suitable for battery-operated devices.
- Low Power Consumption: Consumes less than 100 µA, ideal for power-sensitive applications.
- High-Speed Serial Interface: Compatible with SPI and QSPI serial interfaces, with a 3-wire interface consisting of serial data input (SDI), clock (CLK), and load (LD) pins.
- Rail-to-Rail Output: The output voltage range can be set from 0 to VDD, allowing for full-scale voltage output equal to the positive supply voltage or any value in between.
- Doubled-Buffered Serial-Data Interface: Allows preloading of a new data value into the serial register without disturbing the present DAC values.
- CLR Pin for Reset: Available to reset the DAC register to zero-scale, useful for power-on reset or system failure recovery.
Applications
- Automotive Systems: Suitable for automotive applications due to its robust performance over a wide temperature range.
- Portable Communications: Ideal for portable communication devices due to its low power consumption and compact design.
- Digitally Controlled Calibration: Used in applications requiring precise digital control over analog outputs, such as calibration systems.
- Battery-Operated Devices: Suitable for any battery-operated device requiring high precision and low power consumption.
Q & A
- What is the resolution of the AD7391ARUZ-REEL?
The AD7391ARUZ-REEL has a 10-bit resolution.
- What is the supply voltage range for the AD7391ARUZ-REEL?
The supply voltage range is from 2.7 V to 5.5 V.
- How much current does the AD7391ARUZ-REEL consume?
The device consumes less than 100 µA.
- What type of serial interface does the AD7391ARUZ-REEL use?
The device uses an SPI and QSPI compatible serial interface.
- What is the settling time of the AD7391ARUZ-REEL?
The settling time is 70 µs.
- What is the package type of the AD7391ARUZ-REEL?
The package type is 8-TSSOP.
- Can the AD7391ARUZ-REEL be used in automotive applications?
Yes, it is suitable for automotive applications due to its robust performance over a wide temperature range.
- Does the AD7391ARUZ-REEL have a reset feature?
Yes, it has a CLR pin to reset the DAC register to zero-scale.
- What is the output voltage range of the AD7391ARUZ-REEL?
The output voltage range can be set from 0 to VDD, allowing for full-scale voltage output equal to the positive supply voltage or any value in between.
- Is the AD7391ARUZ-REEL suitable for battery-operated devices?
Yes, it is ideal for battery-operated devices due to its low power consumption.
