Overview
The DAC80504, produced by Texas Instruments, is a member of the DACx0504 family of low-power, four-channel, buffered voltage-output digital-to-analog converters (DACs). This device offers 16-bit resolution and is pin-compatible with the 14-bit DAC70504 and 12-bit DAC60504. The DAC80504 features a low drift, 2.5-V internal reference, eliminating the need for an external precision reference in most applications. It operates from a single 2.7-V to 5.5-V supply and is specified monotonic, providing high linearity of ±1 LSB INL. The device is particularly suited for battery-operated equipment due to its low power consumption and compact 3-mm × 3-mm QFN package.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16-bit |
| Number of Channels | 4 |
| Internal Reference | 2.5 V, ±5 mV initial accuracy, 2 ppm/°C typical drift |
| INL (Integral Nonlinearity) | ±1 LSB Maximum |
| TUE (Total Unadjusted Error) | ±0.1% of FSR Maximum |
| Output Configuration | User-selectable gain: 2, 1, or ½ |
| Output Voltage Range | 1.25 V, 2.5 V, or 5 V depending on gain setting |
| Power Supply | 2.7 V to 5.5 V |
| Operating Temperature | –40°C to +125°C |
| Serial Interface | 50-MHz, SPI-compatible, 4-wire mode, 1.7 V to 5.5 V operation |
| Package | 3-mm × 3-mm, 16-Pin WQFN |
| Current Consumption | 0.7 mA/channel at 5.5 V, 15 µA per channel in power-down mode |
Key Features
- Low drift, 2.5-V internal reference with ±5 mV initial accuracy and 2 ppm/°C typical drift.
- High drive capability: 20 mA with 0.5 V from supply rails.
- Flexible output configuration with user-selectable gain (2, 1, or ½).
- Reset to zero scale or midscale.
- Wide operating range: 2.7 V to 5.5 V power supply and –40°C to +125°C temperature range.
- 50-MHz, SPI-compatible serial interface with 4-wire mode and CRC error check.
- Daisy-chain operation and VIO pin for serial interface operation from 1.7 V to 5.5 V.
- Low power consumption: 0.7 mA/channel at 5.5 V and 15 µA per channel in power-down mode.
- Compact 3-mm × 3-mm QFN package.
Applications
- Battery-operated equipment due to low power consumption.
- Industrial control systems requiring high precision and reliability.
- Aerospace and defense applications where wide temperature range and high accuracy are crucial.
- Medical devices that need precise analog output signals.
- Automotive systems, especially those requiring robust performance over a wide temperature range.
Q & A
- What is the resolution of the DAC80504?
The DAC80504 has a resolution of 16 bits.
- What is the operating temperature range of the DAC80504?
The DAC80504 operates over a temperature range of –40°C to +125°C.
- What is the power supply range for the DAC80504?
The DAC80504 operates from a single 2.7-V to 5.5-V supply.
- What is the current consumption per channel at 5.5 V?
The current consumption per channel is 0.7 mA at 5.5 V.
- Does the DAC80504 have an internal reference?
Yes, the DAC80504 includes a low drift, 2.5-V internal reference.
- What are the gain options for the DAC80504?
The DAC80504 offers user-selectable gain configurations of 2, 1, or ½.
- What is the maximum output current of the DAC80504?
The DAC80504 has a high drive capability of 20 mA with 0.5 V from supply rails.
- Does the DAC80504 support daisy-chain operation?
Yes, the DAC80504 supports daisy-chain operation through its SPI-compatible serial interface.
- What is the package type and size of the DAC80504?
The DAC80504 is available in a 3-mm × 3-mm, 16-Pin WQFN package.
- Is the DAC80504 suitable for battery-operated devices?
Yes, the DAC80504 is an excellent choice for battery-operated equipment due to its low power consumption.
