Overview
The DAC8830ICDR from Texas Instruments is a 16-bit, single-channel, 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 applications requiring high accuracy and low power consumption. The DAC8830 features a high-speed SPI serial interface, supporting clock rates up to 50 MHz, and is compatible with various digital interfaces such as SPI, QSPI, and Microwire.
The device is reset to zero code on power-up, ensuring a known initial state. It provides unbuffered voltage output, which reduces power consumption and minimizes the error introduced by a buffer. The DAC8830 is suitable for a wide range of applications, including process control, industrial automation, and HART-enabled sensor-transmitter systems.
Key Specifications
| Parameter | Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Resolution | 16 | bits | |||
| Linearity Error | ±0.5 | ±1 | ±2 | LSB | |
| Differential Linearity Error | ±0.5 | ±1 | ±1 | LSB | |
| Gain Error | TA = +25°C | ±1 | ±5 | LSB | |
| Gain Drift | TA = –40°C to +85°C | ±0.1 | ±0.25 | ppm/°C | |
| Zero Code Error | TA = +25°C | ±1 | ±2 | LSB | |
| Zero Code Drift | TA = –40°C to +85°C | ±0.05 | ±0.25 | 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 | ||
| Power-Supply Voltage | 2.7 | 5.5 | V | ||
| Power-Supply Current | VDD = 3 V | 5 | 20 | μA | |
| Power Consumption | VDD = 3 V | 15 | 60 | μW | |
| Temperature Range | –40 | +85 | °C |
Key Features
- 16-bit resolution with high accuracy (1 LSB INL)
- Ultra-low power consumption (15 μW at 3 V power supply)
- Fast settling time (1.0 μs to 1/2 LSB of full-scale output)
- Low noise (10 nV/√Hz at 25°C)
- Fast SPI interface up to 50 MHz
- Reset to zero code on power-up
- Schmitt-trigger inputs for direct optocoupler interface
- Industry-standard pin configuration
- Unbuffered voltage output, reducing power consumption and error
- Kelvin sense connections for reference and analog ground (DAC8831)
Applications
- Process control and industrial automation
- HART-enabled sensor-transmitter systems
- Low-power, high-accuracy data acquisition systems
- Industrial and medical instrumentation
- Automotive and aerospace applications requiring low power and high precision
Q & A
- What is the resolution of the DAC8830?
The DAC8830 has a 16-bit resolution.
- What is the operating voltage range of the DAC8830?
The DAC8830 operates from a single power supply ranging from 2.7 V to 5.5 V.
- How much power does the DAC8830 typically consume?
The DAC8830 typically consumes 15 μW at a 3 V power supply.
- What is the settling time of the DAC8830?
The settling time of the DAC8830 is 1.0 μs to 1/2 LSB of full-scale output.
- Does the DAC8830 have a buffered or unbuffered output?
The DAC8830 has an unbuffered voltage output.
- What is the maximum clock rate of the SPI interface?
The SPI interface can operate at speeds up to 50 MHz.
- How does the DAC8830 reset on power-up?
The DAC8830 resets to zero code on power-up.
- What type of inputs does the DAC8830 have for the serial interface?
The DAC8830 has Schmitt-trigger inputs for the serial interface.
- What are the typical applications of the DAC8830?
The DAC8830 is typically used in process control, industrial automation, and HART-enabled sensor-transmitter systems.
- What is the temperature range for specified performance of the DAC8830?
The specified performance temperature range is from –40°C to +85°C.
