Overview
The Texas Instruments DAC8568IBPWR is a 16-bit, octal-channel digital-to-analog converter (DAC) designed for high precision and low power consumption. This device features an internal 2.5V reference voltage with high accuracy and low temperature drift, making it ideal for applications requiring stable and precise analog output. The DAC8568 is particularly suited for portable, battery-operated equipment due to its small footprint and ultralow power operation. It is also monotonic over the entire temperature range, ensuring excellent linearity and minimizing undesired code-to-code transient voltages (glitch).
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16-bit |
| Number of Channels | 8 |
| Internal Reference Voltage | 2.5V (disabled by default) |
| Initial Accuracy of Internal Reference | 0.004% (typ) |
| Temperature Drift of Internal Reference | 2ppm/°C (typ), 5ppm/°C (max) |
| Output Current Capability | Up to 20mA at VREFIN/VREFOUT pin |
| Power Supply Range | +2.7V to +5.5V |
| Power Consumption (including internal reference) | Typically 2.9mW at 3V, less than 1µW in power-down mode |
| Operating Temperature Range | –40°C to +125°C |
| Package Type | TSSOP-16 |
| Serial Interface Clock Rate | Up to 50MHz |
Key Features
- Relative Accuracy: 4 LSB INL for 16-bit resolution
- Glitch Energy: 0.1nV-s
- Internal Reference: 2.5V with 0.004% initial accuracy and 2ppm/°C temperature drift
- Power-On Reset to Zero Scale or Midscale
- Ultralow Power Operation: 1.25mA at 5V including internal reference current
- Wide Power-Supply Range: +2.7V to +5.5V
- Monotonic Over Entire Temperature Range
- Low-Power Serial Interface with Schmitt-Triggered Inputs: Up to 50MHz
- On-Chip Output Buffer Amplifier with Rail-to-Rail Operation
Applications
- Ultrasound
- Portable Instrumentation
- Closed-Loop Servo-Control/Process Control
- Data Acquisition Systems
- Programmable Attenuation, Digital Gain, and Offset Adjustment
- Programmable Voltage and Current Sources
Q & A
- What is the resolution of the DAC8568IBPWR?
The DAC8568IBPWR has a 16-bit resolution.
- How many channels does the DAC8568IBPWR have?
The DAC8568IBPWR has 8 channels.
- What is the internal reference voltage of the DAC8568IBPWR?
The internal reference voltage is 2.5V, which is disabled by default.
- What is the initial accuracy of the internal reference?
The initial accuracy of the internal reference is 0.004%.
- What is the temperature drift of the internal reference?
The temperature drift of the internal reference is 2ppm/°C (typ) and 5ppm/°C (max).
- What is the output current capability of the DAC8568IBPWR?
The DAC8568IBPWR can source up to 20mA at the VREFIN/VREFOUT pin.
- What is the power supply range for the DAC8568IBPWR?
The power supply range is +2.7V to +5.5V.
- How much power does the DAC8568IBPWR consume?
The power consumption is typically 2.9mW at 3V, reducing to less than 1µW in power-down mode.
- What is the operating temperature range of the DAC8568IBPWR?
The operating temperature range is –40°C to +125°C.
- What type of package does the DAC8568IBPWR come in?
The DAC8568IBPWR comes in a TSSOP-16 package.
