Overview
The DAC8581IPWR, produced by Texas Instruments, is a high-performance 16-bit digital-to-analog converter (DAC) with a bipolar output buffer. This device is designed for applications requiring high speed, low noise, and exceptional linearity. The DAC8581 features a 3-MSPS update rate and supports an SPI interface up to 50 MHz, making it suitable for a wide range of high-speed data conversion tasks. It operates with a ±5-V dual power supply and has a power-on-reset circuit that sets the output to midscale voltage on power-up. The device is packaged in a TSSOP-16 package and is specified over a temperature range of –40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 | Bits |
| Update Rate | 3 MSPS | |
| Settling Time (Large Signal) | 0.65 μs | μs |
| Settling Time (Small Signal) | < 0.3 μs | μs |
| Power Supplies | ±5 V (Analog), 1.8 V–5.5 V (Digital) | V |
| Reference Input Voltage Range | Up to 5.5 V | V |
| Output Voltage Range | ±VREF | V |
| Output Impedance | 600 Ω | Ω |
| Glitch Area | 0.5 nV-s | nV-s |
| Serial Interface | SPI, up to 50 MHz | |
| Temperature Range | –40°C to +85°C | °C |
Key Features
- High-speed, 16-bit resolution with 3-MSPS update rate
- Monotonic and exceptionally low noise and glitch performance
- Bipolar output buffer with ±5-V swing capability
- Single external reference input with internal buffering
- Power-on-reset to midscale voltage
- Hardware reset to midscale
- 1.8-V–5-V logic compatible digital inputs
- Twos complement data format
- Fast settling time and low idle-channel noise
- Code-independent power consumption and settling time
Applications
- High-speed data acquisition systems
- Automotive and industrial control systems
- Aerospace and defense applications
- Medical imaging and diagnostic equipment
- Test and measurement instruments
- Audio and video signal processing
Q & A
- What is the resolution of the DAC8581?
The DAC8581 has a 16-bit resolution.
- What is the update rate of the DAC8581?
The DAC8581 has an update rate of up to 3 MSPS.
- What is the settling time for large signal changes?
The settling time for large signal changes is 0.65 μs.
- What is the power supply requirement for the DAC8581?
The DAC8581 requires ±5-V analog power supplies and a 1.8-V to 5.5-V digital supply.
- What is the output voltage range of the DAC8581?
The output voltage range is ±VREF, where VREF is the reference input voltage.
- What type of serial interface does the DAC8581 support?
The DAC8581 supports an SPI interface up to 50 MHz.
- How does the power-on-reset feature work?
The power-on-reset circuit sets the output to midscale voltage on power-up.
- What is the temperature range for the DAC8581?
The specified performance temperature range is –40°C to +85°C.
- What is the glitch performance of the DAC8581?
The DAC8581 has a low glitch area of 0.5 nV-s.
- How is the output buffer of the DAC8581 characterized?
The output buffer is high-performance, bipolar, and capable of driving a 600-Ω, 200-pF load with fast settling and low noise.
