Overview
The DAC8831IBDR, produced by Texas Instruments, is a 16-bit, ultra-low power, voltage-output digital-to-analog converter (DAC). This device operates from a single power supply ranging from 2.7 V to 5.5 V and is designed for high accuracy and low power consumption. The DAC8831 is particularly notable for its bipolar output capability when used with an external buffer, making it versatile for various applications. It features a high-speed SPI serial interface up to 50 MHz, which facilitates communication with DSPs or microprocessors. The device is reset to zero code after power-up and includes Kelvin sense connections for optimal performance.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 16 bits | |
| Power Supply | 2.7 V to 5.5 V | Single supply operation |
| Power Consumption | 15 µW (at 3 V) | Typical power consumption |
| Output Range | 0 V to +VREF (unipolar), ±VREF (bipolar with external buffer) | |
| Integral Nonlinearity (INL) | 1 LSB | |
| Noise | 10 nV/√Hz | |
| Settling Time | 1.0 µs to 1/2 LSB of full-scale output | |
| Slew Rate | 25 V/µs | Measured from 10% to 90% of transition |
| Digital Interface | SPI up to 50 MHz | |
| Package | SO-14, QFN-14 | Industry standard pinouts |
| Operating Temperature | -40°C to +85°C |
Key Features
- High accuracy with 1 LSB integral nonlinearity (INL)
- Ultra-low power consumption: 15 µW at 3 V power supply
- Fast settling time: 1.0 µs to 1/2 LSB of full-scale output
- Low noise: 10 nV/√Hz
- High-speed SPI serial interface up to 50 MHz
- Schmitt-trigger inputs for direct optocoupler interface
- Reset to zero code after power-up
- Kelvin sense connections for external reference and analog ground input
- Bipolar output capability with external buffer
Applications
- Portable equipment
- Automatic test equipment
- Industrial process control
- Data acquisition systems
- Optical networking
Q & A
- What is the resolution of the DAC8831IBDR?
The DAC8831IBDR has a 16-bit resolution.
- What is the power supply range for the DAC8831IBDR?
The DAC8831IBDR operates from a single power supply ranging from 2.7 V to 5.5 V.
- How much power does the DAC8831IBDR typically consume?
The DAC8831IBDR typically consumes 15 µW at a 3 V power supply.
- What is the output range of the DAC8831IBDR?
The output range is 0 V to +VREF in unipolar mode and ±VREF in bipolar mode with an external buffer.
- What is the settling time of the DAC8831IBDR?
The settling time is 1.0 µs to 1/2 LSB of full-scale output.
- What is the noise level of the DAC8831IBDR?
The noise level is 10 nV/√Hz.
- What type of digital interface does the DAC8831IBDR use?
The DAC8831IBDR uses a high-speed SPI serial interface up to 50 MHz.
- What are the available packages for the DAC8831IBDR?
The DAC8831IBDR is available in SO-14 and QFN-14 packages.
- What is the operating temperature range of the DAC8831IBDR?
The operating temperature range is -40°C to +85°C.
- Does the DAC8831IBDR have bipolar output capability?
Yes, the DAC8831IBDR can provide bipolar output when used with an external buffer.
