Overview
The AD7391ARZ-REEL7, produced by Analog Devices Inc., is a 10-bit serial-input, micropower 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 resolution options. The AD7391 operates from a single supply voltage ranging from 2.7 V to 5.5 V and consumes less than 100 µA, making it ideal for battery-operated applications. Built using a CBCMOS process, it offers low cost and ease of use in single-supply 3 V systems.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 10 bits |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Supply Current (No Load, 25°C) | 55 µA (typ), 100 µA (max) |
| Output Voltage Range | 0 to VDD (rail-to-rail) |
| Serial Interface | SPI and QSPI compatible, 3-wire interface (SDI, CLK, LD) |
| Settling Time | 70 µs (typ) to ±0.1% of full scale |
| Output Slew Rate | 0.05 V/µs (typ) |
| Package | 8-SOIC (0.154, 3.90mm Width) |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Low power consumption: Less than 100 µA, making it suitable for battery-operated applications.
- Single-supply operation: Compatible with supply voltages from 2.7 V to 5.5 V.
- High-speed serial interface: SPI and QSPI compatible with Schmitt trigger inputs.
- Rail-to-rail output: Full-scale voltage set equal to the positive supply VDD or any value in between.
- Doubled-buffered serial-data interface: High-speed, 3-wire interface using SDI, CLK, and LD pins.
- CLR input: Resets the DAC register to zero-scale for power-on reset or system failure recovery.
- Compact packaging: Available in 8-SOIC, TSSOP-8, and other compact packages.
Applications
- Automotive systems: Suitable for various automotive applications due to its robust operating range and low power consumption.
- Portable communications: Ideal for handheld devices and other portable communication equipment.
- Digitally controlled calibration: Used in applications requiring precise digital control over analog outputs.
- Battery-operated devices: Perfect for devices that require low power consumption to extend battery life.
Q & A
- What is the resolution of the AD7391ARZ-REEL7?
The AD7391ARZ-REEL7 has a 10-bit resolution.
- What is the supply voltage range for the AD7391ARZ-REEL7?
The supply voltage range is from 2.7 V to 5.5 V.
- How much current does the AD7391ARZ-REEL7 consume?
The device consumes less than 100 µA.
- What type of serial interface does the AD7391ARZ-REEL7 use?
The device uses an SPI and QSPI compatible, 3-wire serial interface.
- What is the settling time of the AD7391ARZ-REEL7?
The settling time is typically 70 µs to ±0.1% of full scale.
- What is the output voltage range of the AD7391ARZ-REEL7?
The output voltage range is from 0 to VDD (rail-to-rail).
- What package types are available for the AD7391ARZ-REEL7?
The device is available in 8-SOIC, TSSOP-8, and other compact packages.
- What is the operating temperature range of the AD7391ARZ-REEL7?
The operating temperature range is from -40°C to +85°C.
- Is the AD7391ARZ-REEL7 suitable for battery-operated applications?
Yes, it is ideal for battery-operated applications due to its low power consumption.
- What is the purpose of the CLR input on the AD7391ARZ-REEL7?
The CLR input resets the DAC register to zero-scale for power-on reset or system failure recovery.
