Overview
The DAC8718SRGZR, produced by Texas Instruments, is a low-power, octal, 16-bit digital-to-analog converter (DAC) designed for high-performance applications. This device offers flexible output ranges, including bipolar and unipolar configurations, making it suitable for a variety of industrial and communication systems. The DAC8718 features a high-speed serial interface compatible with 1.8V, 3V, and 5V logic, enabling seamless communication with DSPs or microprocessors. It operates over a wide temperature range of –40°C to +105°C, ensuring reliability in diverse environmental conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 Bits | |
| Output Range (Bipolar) | ±2V to ±16.5V | V |
| Output Range (Unipolar) | 0V to +33V | V |
| Power Consumption (Bipolar Supply) | 14.4 mW/Channel | mW |
| Relative Accuracy | ±4 LSB Max | LSB |
| Zero/Full-Scale Error (Before Calibration) | ±10 LSB Max | LSB |
| Zero/Full-Scale Error (After Calibration) | ±1 LSB | LSB |
| Settling Time | 15 μs | μs |
| Operating Temperature Range | –40°C to +105°C | °C |
| Package Type | VQFN-48 (7x7mm) |
Key Features
- Bipolar Output: ±2V to ±16.5V
- Unipolar Output: 0V to +33V
- 16-Bit Resolution: High precision for accurate analog output
- Low Power Consumption: 14.4 mW per channel in bipolar supply configuration
- Low Zero/Full-Scale Error: Achieves ±1 LSB accuracy after user calibration
- Flexible System Calibration: Allows for system-level calibration to enhance accuracy
- Low Glitch: Minimal digital feedthrough and crosstalk
- Programmable Gain and Offset: x4/x6 gain and adjustable offset via DAC offset register
- High-Speed SPI Interface: Up to 50 MHz, compatible with 1.8V, 3V, and 5V logic
- Schmitt Trigger Inputs: Ensures reliable digital signal reception
- Daisy-Chain Capability with Sleep Mode: Efficient for multi-device configurations
Applications
- Automatic Test Equipment: Precision analog output for testing and measurement
- PLC and Industrial Process Control: Reliable operation in industrial environments
- Communications: High-precision analog signals for communication systems
Q & A
- What is the resolution of the DAC8718?
The DAC8718 has a 16-bit resolution.
- What are the output voltage ranges for the DAC8718?
The output ranges are ±2V to ±16.5V for bipolar and 0V to +33V for unipolar configurations.
- How much power does the DAC8718 consume per channel in bipolar supply mode?
The power consumption is 14.4 mW per channel.
- What is the settling time of the DAC8718?
The settling time is 15 μs.
- What is the operating temperature range of the DAC8718?
The operating temperature range is –40°C to +105°C.
- What type of package is the DAC8718 available in?
The DAC8718 is available in a VQFN-48 (7x7mm) package.
- Does the DAC8718 support system-level calibration?
Yes, the DAC8718 supports flexible system-level calibration.
- What is the maximum speed of the SPI interface on the DAC8718?
The SPI interface operates up to 50 MHz.
- Can the DAC8718 be daisy-chained with other devices?
Yes, the DAC8718 supports daisy-chaining with sleep mode enhancement.
- What are some typical applications of the DAC8718?
Typical applications include automatic test equipment, PLC and industrial process control, and communications systems.
