Overview
The DAC8831IDR from 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 precision and low power consumption. The DAC8831IDR features a serial-input interface using the SPI protocol, allowing for high-speed communication with digital signal processors (DSPs) or microprocessors up to 50 MHz. It is available in SO-14 and QFN-14 packages, both with industry-standard pinouts.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 | bits |
| Power Supply Voltage | 2.7 to 5.5 | V |
| Output Type | Voltage - Unbuffered | |
| Output Range (Unipolar) | 0 to +VREF | V |
| Output Range (Bipolar) | ±VREF (with external buffer) | V |
| Settling Time | 1 μs (typ) | μs |
| Slew Rate | 25 V/μs (typ) | V/μs |
| Integral Nonlinearity (INL) | ±0.5 LSB | LSB |
| Differential Nonlinearity (DNL) | ±0.5 LSB | LSB |
| Operating Temperature | -40 to +85 | °C |
| Package Type | SO-14, QFN-14 |
Key Features
- Ultra-low power consumption, typically 5 μA at 3 V and 20 μA at 5 V.
- High-speed SPI serial interface up to 50 MHz.
- Excellent linearity with ±0.5 LSB integral nonlinearity (INL) and ±0.5 LSB differential nonlinearity (DNL).
- Fast settling time of 1 μs to 1/2 LSB of full-scale output.
- Low glitch and digital feedthrough.
- Unbuffered voltage output reduces power consumption and error introduced by the buffer.
- Bipolar output capability with an external buffer.
- Kelvin sense connections for the reference and analog ground.
- Power-on reset function ensures a known output state upon power-up.
Applications
- Industrial control systems requiring high precision and low power.
- Medical devices such as patient monitoring systems and diagnostic equipment.
- Aerospace and defense applications where low power and high accuracy are critical.
- Automotive systems, including sensor calibration and data acquisition.
- Consumer electronics, such as audio and video equipment, where low noise and high linearity are essential.
Q & A
- What is the resolution of the DAC8831IDR?
The DAC8831IDR has a resolution of 16 bits.
- What is the operating voltage range of the DAC8831IDR?
The DAC8831IDR operates from a single power supply ranging from 2.7 V to 5.5 V.
- What is the output type of the DAC8831IDR?
The output is unbuffered voltage, with the option for bipolar output when using an external buffer.
- How fast does the DAC8831IDR settle?
The settling time is typically 1 μs to 1/2 LSB of full-scale output.
- What is the typical power consumption of the DAC8831IDR?
The typical power consumption is 5 μA at 3 V and 20 μA at 5 V.
- Does the DAC8831IDR support bipolar output?
- What is the operating temperature range of the DAC8831IDR?
The operating temperature range is -40°C to +85°C.
- What type of serial interface does the DAC8831IDR use?
The DAC8831IDR uses a high-speed SPI serial interface up to 50 MHz.
- Does the DAC8831IDR have a power-on reset function?
- What are the available package types for the DAC8831IDR?
The DAC8831IDR is available in SO-14 and QFN-14 packages.
