Overview
The DAC8831IDG4 is a single, 16-bit, serial-input, voltage-output digital-to-analog converter (DAC) produced by Texas Instruments. This device operates from a single 2.7 V to 5.5 V power supply and is known for its high accuracy, low power consumption, and fast settling time. The DAC8831 is particularly useful in applications requiring bipolar output, achieved through the use of an external buffer. It features a high-speed SPI serial interface, making it compatible with a wide range of digital signal processors (DSPs) and microprocessors.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | 16 | bits | |||
| Linearity error | ±0.5 | ±2 | LSB | ||
| Differential linearity error | ±0.5 | ±1 | LSB | ||
| Gain error | TA = –40°C to +85°C | ±7 | LSB | ||
| Gain drift | TA = +25°C | ±0.1 | ±0.25 | ppm/°C | |
| Zero code error | TA = –40°C to +85°C | ±2 | 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 | ||
| Output noise | TA = +25°C | 10 | nV/√Hz | ||
| Power-supply rejection | VDD varies ±10% | ±1 | LSB |
Key Features
- 16-bit resolution with high accuracy (INL: 1 LSB)
- Single 2.7 V to 5.5 V power supply operation
- Very 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
Applications
- Portable equipment
- Automatic test equipment
- Industrial process control
- Data acquisition systems
- Optical networking
Q & A
- What is the resolution of the DAC8831?
The DAC8831 has a 16-bit resolution. - What is the operating voltage range of the DAC8831?
The DAC8831 operates from a single 2.7 V to 5.5 V power supply. - How much power does the DAC8831 consume at 3 V?
The DAC8831 consumes 15 µW of power at 3 V. - What is the settling time of the DAC8831?
The settling time is 1.0 µs to 1/2 LSB of full-scale output. - Does the DAC8831 support bipolar output?
Yes, the DAC8831 supports bipolar output when used with an external buffer. - What is the maximum clock speed of the SPI interface on the DAC8831?
The SPI interface can operate up to 50 MHz. - How does the DAC8831 reset after power-up?
The DAC8831 resets to zero-code after power-up. - What type of inputs does the DAC8831 have for direct optocoupler interface?
The DAC8831 has Schmitt-Trigger inputs for direct optocoupler interface. - In what packages is the DAC8831 available?
The DAC8831 is available in SO-14 and QFN-14 packages. - What is the operating temperature range of the DAC8831?
The operating temperature range is –40°C to +85°C.
