Overview
The DAC8831ICRGYRG4 is a 16-bit, single-channel, serial-input, voltage-output digital-to-analog converter (DAC) produced by Texas Instruments. This device operates from a single power supply ranging from 2.7 V to 5.5 V and is designed for ultra-low power consumption, typically 15 µW at 3 V. The DAC8831 is part of the DAC8830 and DAC8831 family, which are known for their high accuracy, low noise, and fast settling times.
The device features a standard high-speed SPI serial interface, allowing for communication with DSPs or microprocessors at clock rates up to 50 MHz. It also includes a power-on reset function that resets the DAC to zero code, ensuring a known state at startup.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | - | 16 | - | - | bits |
| Supply Voltage | - | 2.7 | - | 5.5 | V |
| Linearity Error (INL) | - | ±0.5 | - | ±1 | LSB |
| Differential Linearity Error (DNL) | - | ±0.5 | - | ±1 | LSB |
| Gain Error | TA = +25°C | - | - | ±7 | LSB |
| Gain Drift | - | - | - | ±0.1 | ppm/°C |
| Settling Time | - | - | - | 1.0 µs | - |
| Operating Temperature Range | - | -40 | - | 85 | °C |
| Package Type | - | QFN-14 | - | - | - |
Key Features
- High Resolution: 16-bit resolution for precise analog output.
- Low Power Consumption: Typically 15 µW at 3 V, making it suitable for battery-powered devices.
- High Accuracy: Integral non-linearity (INL) of ±1 LSB and differential non-linearity (DNL) of ±1 LSB.
- Low Noise: Low noise output with a noise density of 10 nV/Hz.
- Fast Settling Time: Settles to 1/2 LSB of full-scale output in 1.0 µs.
- High-Speed SPI Interface: Supports clock rates up to 50 MHz.
- Power-On Reset: Resets to zero code after power-up.
- Schmitt-Trigger Inputs: Allows for direct optocoupler interface.
- Industry-Standard Pin Configuration: Compatible with various microcontrollers and DSPs.
Applications
- Portable Equipment: Suitable for battery-powered devices due to low power consumption.
- Automatic Test Equipment: High accuracy and fast settling times make it ideal for test and measurement applications.
- Industrial Process Control: Used in control systems requiring precise analog outputs.
- Data Acquisition Systems: High resolution and accuracy are beneficial for data acquisition applications.
- Optical Networking: Can be used in optical communication systems requiring precise voltage control.
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 power supply ranging from 2.7 V to 5.5 V.
- What is the typical power consumption of the DAC8831 at 3 V?
The typical power consumption is 15 µW 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 have a power-on reset function?
Yes, the DAC8831 resets to zero code after power-up.
- What is the maximum clock rate supported by the SPI interface of the DAC8831?
The SPI interface supports clock rates up to 50 MHz.
- What are the package options available for the DAC8831?
The DAC8831 is available in SO-14 and QFN-14 packages.
- Does the DAC8831 support bipolar output?
Yes, the DAC8831 can provide bipolar output (±VREF) when used with an external buffer.
- What are the key applications of the DAC8831?
The DAC8831 is used in portable equipment, automatic test equipment, industrial process control, data acquisition systems, and optical networking.
- Does the DAC8831 have Schmitt-trigger inputs?
Yes, the DAC8831 has Schmitt-trigger inputs for direct optocoupler interface.
