Overview
The AD7391 is a 10-bit voltage-output digital-to-analog converter (DAC) designed by Analog Devices Inc. This device operates from a single +3 volt supply and is built using a CBCMOS process, offering 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, making it ideal for battery-operated applications.
Key Specifications
| Parameter | Condition | Value | Unit |
|---|---|---|---|
| Resolution | - | 10 bits | - |
| Supply Voltage Range | - | +2.7 V to +5.5 V | V |
| Supply Current | No load | < 100 µA | µA |
| Full-Scale Voltage Error | Data = 3FFH | ±15 mV max | mV |
| Zero-Scale Error | Data = 000H | ±7 mV max | mV |
| Full-Scale Tempco | - | 1.5 ppm/°C typ | ppm/°C |
| Output Slew Rate | Data = 000H to 3FFH to 000H | 2 V/μs typ | V/μs |
| Settling Time | To ±0.1% of full scale | 6 μs typ | μs |
Key Features
- Single +3 V to +5.5 V supply operation
- 10-bit resolution
- Low power consumption: less than 100 µA
- Rail-to-rail REF IN to DAC OUT
- Double-buffered serial-data interface with SPI and microcontroller compatibility
- CLR input to set output to zero scale at power on or upon user demand
- Available in plastic DIP, low profile SO-8, and thin TSSOP-8 packages
- Guaranteed operation over the extended industrial temperature range (-40°C to +85°C)
Applications
- Battery-operated applications
- Automotive output voltage span
- Portable communications
- Digitally controlled calibration
- PC peripherals
Q & A
- What is the resolution of the AD7391 DAC?
The AD7391 has a resolution of 10 bits.
- What is the supply voltage range for the AD7391?
The AD7391 operates over a supply voltage range of +2.7 V to +5.5 V.
- How much current does the AD7391 consume?
The AD7391 consumes less than 100 µA.
- What is the full-scale voltage error of the AD7391?
The full-scale voltage error is ±15 mV max.
- What is the zero-scale error of the AD7391?
The zero-scale error is ±7 mV max.
- What is the full-scale temperature coefficient of the AD7391?
The full-scale temperature coefficient is 1.5 ppm/°C typ.
- What is the output slew rate of the AD7391?
The output slew rate is 2 V/μs typ.
- What is the settling time of the AD7391?
The settling time is 6 μs typ to ±0.1% of full scale.
- In what packages is the AD7391 available?
The AD7391 is available in plastic DIP, low profile SO-8, and thin TSSOP-8 packages.
- What is the operating temperature range of the AD7391?
The AD7391 is guaranteed to operate over the extended industrial temperature range (-40°C to +85°C).
