Overview
The DAC80508ZRTER from Texas Instruments is a high-performance, octal, 16-bit digital-to-analog converter (DAC) with a voltage output. This device is part of the DACx0508 family, which includes 14-bit and 12-bit versions as well. It features an integrated 2.5 V precision internal reference, eliminating the need for an external precision reference in most applications. The DAC80508ZRTER operates from a single 2.7 V to 5.5 V supply and is specified monotonic, ensuring high linearity and accuracy.
The device is designed for low power consumption, with a current draw of 0.6 mA per channel at 5.5 V, making it suitable for battery-operated equipment. It also includes a per-channel power-down feature that reduces the device current consumption to 15 µA. The DAC80508ZRTER is available in small packages, including a 3 mm × 3 mm, 16-Pin WQFN and a 2.4 mm × 2.4 mm, 16-Pin DSBGA.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 Bits | |
| Integral Nonlinearity (INL) | ±1 LSB Maximum | |
| Total Unadjusted Error (TUE) | ±0.1% of FSR Maximum | |
| Internal Reference Voltage | 2.5 V | |
| Initial Accuracy of Internal Reference | ±5 mV Maximum | |
| Reference Drift | 2 ppm/°C Typical | |
| Output Drive Capability | 20 mA with 0.5 V from Supply Rails | |
| Gain Configuration | User Selectable: 2, 1, or ½ | |
| Power Supply Range | 2.7 V to 5.5 V | |
| Operating Temperature Range | –40°C to 125°C | |
| SPI Clock Rate | Up to 50 MHz | |
| Package Types | WQFN (3 mm × 3 mm), DSBGA (2.4 mm × 2.4 mm) |
Key Features
- High Linearity and Accuracy: The DAC80508ZRTER features ±1 LSB maximum integral nonlinearity and ±0.1% of FSR maximum total unadjusted error, ensuring high precision in analog output.
- Integrated Precision Reference: The device includes a 2.5 V precision internal reference with low drift (2 ppm/°C typical), eliminating the need for an external reference in most applications.
- Flexible Output Configuration: User-selectable gain configurations allow for full-scale output voltages of 1.25 V, 2.5 V, or 5 V. The device also features reset to zero scale or midscale and a clear output function.
- Low Power Consumption: The DAC consumes 0.6 mA per channel at 5.5 V and has a per-channel power-down feature that reduces current to 15 µA.
- High-Speed SPI Interface: The device supports a 50 MHz SPI compatible serial interface with daisy chain operation and CRC error check.
- Compact Packaging: Available in small packages such as 3 mm × 3 mm WQFN and 2.4 mm × 2.4 mm DSBGA, making it suitable for space-constrained applications.
Applications
- Optical Networking: Suitable for applications requiring high precision and stability in optical networking systems.
- Wireless Infrastructure: Used in wireless infrastructure equipment where precise analog outputs are necessary.
- Industrial Automation: Ideal for industrial automation systems that require reliable and accurate analog signals.
- Data Acquisition Systems: Employed in data acquisition systems to convert digital data into precise analog outputs).
Q & A
- What is the resolution of the DAC80508ZRTER?
The DAC80508ZRTER has a resolution of 16 bits).
- What is the operating temperature range of the DAC80508ZRTER?
The device operates over a temperature range of –40°C to 125°C).
- What are the available gain configurations for the DAC80508ZRTER?
The device offers user-selectable gain configurations of 2, 1, or ½).
- What is the maximum SPI clock rate supported by the DAC80508ZRTER?
The device supports SPI clock rates up to 50 MHz).
- How much current does the DAC80508ZRTER consume per channel?
The device consumes 0.6 mA per channel at 5.5 V).
- What are the package options available for the DAC80508ZRTER?
The device is available in 3 mm × 3 mm WQFN and 2.4 mm × 2.4 mm DSBGA packages).
- Does the DAC80508ZRTER have an integrated reference?
Yes, the device includes a 2.5 V precision internal reference).
- What is the drift of the internal reference?
The internal reference has a drift of 2 ppm/°C typical).
- Can the DAC80508ZRTER be used in battery-operated equipment?
Yes, due to its low power consumption, it is suitable for battery-operated equipment).
- Does the DAC80508ZRTER support daisy chain operation?
Yes, the device supports daisy chain operation through its SPI interface).
