Overview
The DAC8832ICRGYR is a 16-bit, 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 known for its ultra-low power consumption, typically 15 μW at 3 V. The DAC8832 provides high accuracy, low noise, and fast settling times, making it suitable for a variety of applications requiring precise analog output.
The device features a standard high-speed SPI serial interface up to 50 MHz, compatible with SPI, QSPI, Microwire, and TI DSP interfaces. It is reset to mid-code after power-up, ensuring a known output state. The DAC8832 is available in a QFN-14 package and is pin-to-pin compatible with the DAC8831IRGY, which resets to zero code after power-up.
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 | ±0.25 | ±1 | LSB | |
| Zero Code Error | TA = –40°C to +85°C | ±1 | ±2 | LSB | |
| Reference Input Voltage Range | 1.25 | VDD | V | ||
| Power-Supply Voltage | 2.7 | 5.5 | V | ||
| Power-Supply Current | VDD = 3 V | 5 | 20 | μA | |
| Operating Temperature Range | –40 | +85 | °C | ||
| Settling Time | 1.0 | μS | |||
| Noise | 18 | nV/√Hz |
Key Features
- 16-bit resolution with high accuracy and linearity (±1 LSB INL)
- Ultra-low power consumption: 15 μW at 3 V and 25 μW at 5 V
- Fast settling time: 1.0 μS to 1/2 LSB of full-scale output
- Low noise: 18 nV/√Hz
- High-speed SPI serial interface up to 50 MHz
- Schmitt-trigger inputs for direct optocoupler interface
- Reset to mid-code after power-up
- Unbuffered output reduces power consumption and error introduced by the buffer
- Kelvin sense connections for external reference and analog ground
- Capable of unipolar and bipolar output configurations with an external operational amplifier
Applications
- Portable equipment
- Automatic test equipment
- Industrial process control
- Data acquisition systems
- Optical networking
Q & A
- What is the resolution of the DAC8832?
The DAC8832 has a 16-bit resolution.
- What is the operating voltage range of the DAC8832?
The DAC8832 operates from a single supply ranging from 2.7 V to 5.5 V.
- How much power does the DAC8832 typically consume?
The DAC8832 typically consumes 15 μW at 3 V and 25 μW at 5 V.
- What is the settling time of the DAC8832?
The settling time of the DAC8832 is 1.0 μS to 1/2 LSB of full-scale output.
- Does the DAC8832 support both unipolar and bipolar output configurations?
Yes, the DAC8832 can be configured to output both unipolar and bipolar voltages with the aid of an external operational amplifier.
- What type of serial interface does the DAC8832 use?
The DAC8832 uses a high-speed SPI serial interface up to 50 MHz, compatible with SPI, QSPI, Microwire, and TI DSP interfaces.
- What is the noise level of the DAC8832?
The noise level of the DAC8832 is 18 nV/√Hz.
- What is the operating temperature range of the DAC8832?
The operating temperature range of the DAC8832 is –40°C to +85°C.
- Does the DAC8832 have a power-on reset function?
Yes, the DAC8832 has a power-on reset function that resets the output to mid-code after power-up.
- What package type is the DAC8832 available in?
The DAC8832 is available in a QFN-14 package.
