Overview
The DAC8831ICDG4, produced by Texas Instruments (formerly Burr Brown), is a 16-bit, ultra-low power, voltage-output digital-to-analog converter (DAC). This device operates on a single supply voltage ranging from 2.7 V to 5.5 V and is known for its high resolution and low power consumption. The DAC8831 is designed with a serial interface and supports both unipolar and bipolar output modes, making it versatile for various applications. It features a power-on reset function that ensures a known state at startup, resetting to zero code in unipolar mode and to –VREF in bipolar mode.
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 = +25°C | ±1 | ±5 | LSB | |
| Gain Drift | TA = +25°C | ±0.1 | ±0.25 | ppm/°C | |
| Zero Code Error | TA = +25°C | ±0.5 | ±2 | LSB | |
| 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 | ||
| Power-Supply Voltage | 2.7 | 5.5 | V | ||
| Power-Supply Current | VDD = 3 V | 5 | 20 | μA |
Key Features
- 16-bit resolution providing high accuracy and precision.
- Ultra-low power consumption, typically 5 μA, making it suitable for battery-powered devices.
- Single-supply operation from 2.7 V to 5.5 V.
- Serial interface (SPI-compatible) for easy communication.
- Unipolar output (0 V to +VREF) for DAC8831, and bipolar output (±VREF) with external buffer.
- Low output impedance of 6.25 kΩ.
- Fast settling time of 1 μs to 1/2 LSB of full scale.
- High slew rate of 25 V/μs.
- Power-on reset function ensuring a known state at startup.
- Kelvin sense connections for the reference and analog ground.
Applications
- Industrial control systems requiring precise analog outputs.
- Medical devices where low power and high accuracy are crucial.
- Aerospace and defense applications needing reliable and low-power DACs.
- Automotive systems, especially those requiring robust and low-power components.
- Portable and battery-powered equipment where power efficiency is key.
Q & A
- What is the resolution of the DAC8831ICDG4?
The DAC8831ICDG4 has a 16-bit resolution.
- What is the operating voltage range of the DAC8831ICDG4?
The DAC8831ICDG4 operates on a single supply voltage ranging from 2.7 V to 5.5 V.
- What types of output modes does the DAC8831ICDG4 support?
The DAC8831ICDG4 supports both unipolar (0 V to +VREF) and bipolar (±VREF) output modes.
- How does the DAC8831ICDG4 communicate with other devices?
The DAC8831ICDG4 communicates via a serial interface (SPI-compatible).
- What is the typical power consumption of the DAC8831ICDG4?
The typical power consumption is 5 μA.
- What is the settling time of the DAC8831ICDG4?
The settling time is 1 μs to 1/2 LSB of full scale.
- Does the DAC8831ICDG4 have a power-on reset function?
Yes, the DAC8831ICDG4 has a power-on reset function that ensures a known state at startup.
- What is the output impedance of the DAC8831ICDG4?
The output impedance is 6.25 kΩ.
- What is the slew rate of the DAC8831ICDG4?
The slew rate is 25 V/μs.
- Are there Kelvin sense connections available on the DAC8831ICDG4?
Yes, the DAC8831ICDG4 includes Kelvin sense connections for the reference and analog ground.
