Overview
The DAC8531IDRBT from Texas Instruments is a low-power, single, 16-bit buffered voltage output Digital-to-Analog Converter (DAC). It features an on-chip precision output amplifier that allows for rail-to-rail output swing, making it suitable for a variety of applications. The DAC is designed for low power consumption, with a typical current draw of 250 µA at 5V and reducing to 1 µW in power-down mode, making it ideal for portable battery-operated equipment. The device uses a versatile three-wire serial interface compatible with standard SPI, QSPI, Microwire, and Digital Signal Processor (DSP) interfaces, operating at clock rates up to 30MHz.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Supply Voltage | +2.7V to +5.5V |
| Current Consumption | 250 µA at 5V, 1 µW in power-down mode |
| Settling Time | 10 µs to ±0.003 FSR |
| Output Range | Rail-to-rail |
| Interface | Three-wire serial interface, compatible with SPI, QSPI, Microwire, and DSP interfaces |
| Clock Rate | Up to 30MHz |
| Package Options | MSOP-8 and 3x3 SON-8 (same size as QFN) |
| Power-On Reset | Output resets to 0V on power-up |
| Power-Down Mode | Current consumption reduces to 200nA at 5V |
Key Features
- Low power operation: 250 µA at 5V and 1 µW in power-down mode
- Power-on reset to zero: Ensures output voltage is 0V on power-up
- Rail-to-rail output: Achieved through on-chip precision output amplifier
- Low-power serial interface with Schmitt-triggered inputs
- SYNC interrupt facility
- Ensured monotonic by design
- Fast settling time: 10 µs to ±0.003 FSR
Applications
- Process control
- Data acquisition systems
- Closed-loop servo-control
- PC peripherals
- Portable instrumentation
- Programmable attenuation
Q & A
- What is the resolution of the DAC8531IDRBT?
The DAC8531IDRBT has a resolution of 16 bits.
- What is the supply voltage range for the DAC8531IDRBT?
The supply voltage range is +2.7V to +5.5V.
- How much current does the DAC8531IDRBT consume in normal operation?
The DAC8531IDRBT consumes 250 µA at 5V in normal operation.
- What is the settling time of the DAC8531IDRBT?
The settling time is 10 µs to ±0.003 FSR.
- Does the DAC8531IDRBT have a power-on reset feature?
- What are the package options for the DAC8531IDRBT?
The DAC8531IDRBT is available in MSOP-8 and 3x3 SON-8 (same size as QFN) packages.
- Is the DAC8531IDRBT suitable for portable battery-operated equipment?
- What is the clock rate of the serial interface?
The serial interface operates at clock rates up to 30MHz.
- Does the DAC8531IDRBT have a power-down mode?
- What types of interfaces is the DAC8531IDRBT compatible with?
The DAC8531IDRBT is compatible with standard SPI, QSPI, Microwire, and Digital Signal Processor (DSP) interfaces.
