Overview
The AD7391ARUZ is a 10-bit voltage-output digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD7390/AD7391 family, designed to operate from a single +3 volt supply, making it ideal for battery-operated applications. Built using a CBCMOS process, the AD7391 offers low cost and ease of use in single-supply +3 V systems. It is guaranteed to operate over a supply voltage range of +2.7 V to +5.5 V and consumes less than 100 µA, enhancing its suitability for power-sensitive designs.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 10 |
| Number of D/A Converters | 1 |
| Settling Time | 70 µs (Typ) |
| Output Type | Voltage - Buffered |
| Differential Output | No |
| Data Interface | SPI |
| Reference Type | External |
| Voltage - Supply, Analog/Digital | +2.7 V to +5.5 V |
| INL/DNL (LSB) | ±2 (Max), ±0.9 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C to +125°C |
| Package | 8-TSSOP (0.173", 4.40mm Width) |
Key Features
- Low Power Consumption: Consumes less than 100 µA, making it suitable for battery-operated applications.
- Single Supply Operation: Operates from a single +3 V supply with a guaranteed operation range of +2.7 V to +5.5 V.
- High-Speed Interface: Features a doubled-buffered serial-data interface compatible with SPI and microcontroller inputs.
- External Reference Input: Allows for a full-scale voltage output set equal to the positive supply VDD or any value in between.
- CLR Input: Sets the output to zero scale at power on or upon user demand.
- Compact Packaging: Available in plastic DIP, low profile 1.75 mm height SO-8 surface mount packages, and thin 1.1 mm TSSOP-8 packages.
Applications
The AD7391ARUZ is versatile and can be used in various applications, including:
- Battery-Operated Devices: Due to its low power consumption, it is ideal for devices that require long battery life.
- Industrial Control Systems: Suitable for industrial environments with its extended industrial temperature range of -40°C to +85°C.
- Medical Devices: Can be used in medical equipment where precision and low power are critical.
- Aerospace and Automotive Systems: Its robust design and wide operating temperature range make it suitable for these demanding environments.
Q & A
- What is the resolution of the AD7391ARUZ DAC?
The AD7391ARUZ is a 10-bit digital-to-analog converter.
- What is the supply voltage range for the AD7391ARUZ?
The device operates over a supply voltage range of +2.7 V to +5.5 V.
- What is the typical settling time of the AD7391ARUZ?
The typical settling time is 70 µs.
- What type of data interface does the AD7391ARUZ use?
The device uses a SPI (Serial Peripheral Interface) compatible with microcontrollers.
- Can the AD7391ARUZ be used in battery-operated devices?
Yes, it is suitable for battery-operated devices due to its low power consumption of less than 100 µA.
- What is the operating temperature range of the AD7391ARUZ?
The device operates over an extended industrial temperature range of -40°C to +85°C.
- What package options are available for the AD7391ARUZ?
It is available in plastic DIP, low profile 1.75 mm height SO-8 surface mount packages, and thin 1.1 mm TSSOP-8 packages.
- How does the CLR input function on the AD7391ARUZ?
The CLR input sets the output to zero scale at power on or upon user demand.
- Is the AD7391ARUZ compatible with external reference inputs?
Yes, it allows for an external reference input to set the full-scale voltage output.
- What architecture does the AD7391ARUZ use?
The device uses an R-2R architecture.
