Overview
The DAC8831IBD from Texas Instruments is a single, 16-bit, serial-input, voltage-output digital-to-analog converter (DAC). It operates from a single power supply ranging from 2.7 V to 5.5 V, making it versatile for various applications. The DAC8831 is known for its ultra-low power consumption, typically 15 µW at 3 V, and its high accuracy with an integral nonlinearity (INL) of 1 LSB. The device features a fast settling time of 1.0 µs to 1/2 LSB of full-scale output and a high-speed SPI serial interface up to 50 MHz, facilitating communication with DSPs or microprocessors.
The DAC8831 provides bipolar output (±VREF) when used with an external buffer, and it includes Kelvin sense connections for the reference and analog ground inputs to ensure optimum performance. The device is reset to zero code after power-up and has industry-standard pin configurations available in SO-14 and QFN-14 packages.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | 16 | bits | |||
| Linearity error | TA = +25°C | ±0.5 | ±1 | LSB | |
| Differential linearity error | All grades | ±0.5 | ±1 | LSB | |
| Gain error | TA = –40°C to +85°C | ±2 | ±7 | LSB | |
| Gain drift | TA = +25°C | ±0.1 | ±0.25 | ppm/°C | |
| Zero code error | TA = –40°C to +85°C | ±2 | ±7 | LSB | |
| Zero code drift | ±0.05 | ppm/°C | |||
| Output impedance | 6.25 | kΩ | |||
| Settling time | To 1/2 LSB of FS, CL = 10 pF | 1 | μs | ||
| Slew rate | CL = 10 pF | 25 | V/μs | ||
| Power supply voltage | 2.7 | 5.5 | V | ||
| Operating temperature range | -40 | 85 | °C |
Key Features
- 16-bit resolution with high accuracy (INL: 1 LSB)
- 2.7 V to 5.5 V single-supply operation
- Ultra-low power consumption: 15 µW at 3 V
- Low noise: 10 nV/√Hz
- Fast settling time: 1.0 µs to 1/2 LSB of full-scale output
- High-speed SPI serial interface up to 50 MHz
- Reset to zero code after power-up
- Schmitt-trigger inputs for direct optocoupler interface
- Industry-standard pin configuration
- Bipolar output (±VREF) with external buffer
- Kelvin sense connections for reference and analog ground inputs
Applications
- Portable equipment
- Automatic test equipment
- Industrial process control
- Data acquisition systems
- Optical networking
Q & A
- What is the resolution of the DAC8831IBD?
The DAC8831IBD has a 16-bit resolution.
- What is the operating voltage range of the DAC8831IBD?
The DAC8831IBD operates from a single power supply ranging from 2.7 V to 5.5 V.
- How much power does the DAC8831IBD typically consume?
The DAC8831IBD typically consumes 15 µW at 3 V.
- What is the settling time of the DAC8831IBD?
The settling time of the DAC8831IBD is 1.0 µs to 1/2 LSB of full-scale output.
- What type of serial interface does the DAC8831IBD use?
The DAC8831IBD uses a high-speed SPI serial interface up to 50 MHz.
- Does the DAC8831IBD have bipolar output capability?
- What is the output impedance of the DAC8831IBD?
The output impedance of the DAC8831IBD is 6.25 kΩ.
- What are the key applications of the DAC8831IBD?
The key applications include portable equipment, automatic test equipment, industrial process control, data acquisition systems, and optical networking.
- What type of packages is the DAC8831IBD available in?
The DAC8831IBD is available in SO-14 and QFN-14 packages.
- Does the DAC8831IBD have Kelvin sense connections?
- What happens to the DAC8831IBD after power-up?
The DAC8831IBD is reset to zero code after power-up.
