Overview
The Texas Instruments DAC8568IAPWR is a 16-bit, octal-channel, ultra-low glitch, voltage output digital-to-analog converter (DAC). This device is part of the DAC8568 series, which includes low-power, voltage-output DACs designed for high precision and low power consumption. The DAC8568 features a 2.5V, 2ppm/°C internal reference (disabled by default), providing a full-scale output voltage range of 2.5V or 5V. It is particularly suited for portable, battery-operated equipment due to its low power consumption, internal reference, and small footprint.
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) |
| Reference Current Capability | Up to 20mA at VREFIN/VREFOUT pin |
| Power Supply Range | +2.7V to +5.5V |
| Power Consumption | Typically 2.9mW at 3V, less than 1μW in power-down mode |
| Operating Temperature Range | –40°C to +125°C |
| Serial Interface Clock Rate | Up to 50MHz |
| Package Type | TSSOP-16 |
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
- Temperature Range: –40°C to +125°C
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 DAC8568?
The DAC8568 has a 16-bit resolution.
- How many channels does the DAC8568 have?
The DAC8568 has 8 channels.
- What is the internal reference voltage of the DAC8568?
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 power consumption of the DAC8568?
The power consumption is typically 2.9mW at 3V and less than 1μW in power-down mode.
- What is the operating temperature range of the DAC8568?
The operating temperature range is –40°C to +125°C.
- What is the maximum clock rate of the serial interface?
The serial interface operates at clock rates up to 50MHz.
- What package type is the DAC8568 available in?
The DAC8568 is available in a TSSOP-16 package.
- Is the DAC8568 monotonic over the entire temperature range?
Yes, the DAC8568 is monotonic over the entire temperature range.
