Overview
The DAC8831IRGYRG4, produced by Texas Instruments, is a 16-bit, serial-input, voltage-output digital-to-analog converter (DAC). This device operates from a single 2.7 V to 5.5 V power supply, making it suitable for a wide range of applications requiring high accuracy and low power consumption. The DAC8831 is known for its excellent linearity, low glitch, low noise, and fast settling time of 1.0 µS to 1/2 LSB of full-scale output over a temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | 16 | bits | |||
| Linearity error | TA = +25°C | ±0.5 | ±1 | LSB | |
| Differential linearity error | TA = +25°C | ±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 | TA = +25°C | ±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 | ||
| Digital-to-analog glitch | 1 LSB change around major carry | 35 | nV-s | ||
| Digital feedthrough | 0.2 | nV-s | |||
| Output noise | TA = +25°C | 18 | nV/√Hz | ||
| Power-supply rejection | VDD varies ±10% | ±1 | LSB | ||
| Bipolar resistor matching | ±0.0015 | % | |||
| Bipolar zero error | TA = –40°C to +85°C | ±7 | LSB | ||
| Bipolar zero drift | TA = +25°C | ±0.2 | ppm/°C |
Key Features
- 16-Bit Resolution: Provides high accuracy and precision in digital-to-analog conversion.
- Single-Supply Operation: Operates from 2.7 V to 5.5 V, making it versatile for various applications.
- Ultra-Low Power Consumption: Consumes as low as 15 µW at 3 V power supply, ideal for battery-powered devices.
- High Accuracy: Excellent linearity with Integral Non-Linearity (INL) of 1 LSB.
- Low Noise: Output noise of 18 nV/√Hz at 25°C.
- Fast Settling Time: Settles to 1/2 LSB of full-scale output in 1.0 µS.
- Fast SPI Interface: Supports clock rates up to 50 MHz for high-speed communication.
- Reset to Zero-Code: Automatically resets to zero code after power-up.
- Schmitt-Trigger Inputs: Allows direct optocoupler interface.
- Industry-Standard Pin Configuration: Available in SO-14 and QFN-14 packages.
Applications
- Portable Equipment: Suitable for battery-powered devices due to its low power consumption.
- Automatic Test Equipment: High accuracy and fast settling time make it ideal for test and measurement applications.
- Industrial Process Control: Used in control systems requiring precise analog outputs.
- Data Acquisition Systems: Utilized in systems that require high-resolution analog outputs.
- Optical Networking: Employed in optical communication systems for precise signal generation.
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.
- What is the typical power consumption of the DAC8831 at 3 V power supply?
The typical power consumption is 15 µW at 3 V power supply.
- 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?
- What is the maximum clock rate supported by the SPI interface of the DAC8831?
The SPI interface supports clock rates up to 50 MHz.
- Does the DAC8831 have Schmitt-Trigger inputs?
- In what packages is the DAC8831 available?
The DAC8831 is available in SO-14 and QFN-14 packages.
- What are some common applications of the DAC8831?
- How does the DAC8831 reset after power-up?
