Overview
The DAC8568IAPW is a 16-bit, octal-channel, ultra-low glitch, voltage output digital-to-analog converter (DAC) produced by Texas Instruments. This device is part of the DAC7568, DAC8168, and DAC8568 family, which are low-power, voltage-output DACs with 12-, 14-, and 16-bit resolutions, respectively. The DAC8568IAPW features a 2.5V internal reference with high accuracy and low temperature drift, making it suitable for applications requiring precise analog output.
The device operates over a wide power-supply range of 2.7V to 5.5V and is available in a TSSOP-16 package. It includes a power-on-reset circuit, ultralow power operation, and a versatile 3-wire serial interface compatible with standard SPI, QSPI, Microwire, and DSP interfaces.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 Bits | |
| Relative Accuracy | ±4 LSB INL | |
| Glitch Energy | 0.1 nV-s | |
| Internal Reference Voltage | 2.5V (disabled by default) | |
| Internal Reference Accuracy | 0.004% (typ) | |
| Internal Reference Temperature Drift | 2 ppm/°C (typ), 5 ppm/°C (max) | |
| Power Supply Range | +2.7V to +5.5V | |
| Operating Temperature Range | –40°C to +125°C | |
| Package Type | TSSOP-16 | |
| Number of Pins | 16 | |
| Serial Interface Clock Rate | Up to 50MHz | |
| Power Consumption (typ) | 1.25mA at 5V (including internal reference) |
Key Features
- Ultra-low glitch energy of 0.1 nV-s, ensuring minimal code-to-code transient voltages.
- Internal 2.5V reference with 0.004% initial accuracy and 2 ppm/°C temperature drift.
- Power-on-reset to zero scale or midscale until a valid code is written.
- Ultralow power operation: 1.25mA at 5V including internal reference current.
- Wide power-supply range: +2.7V to +5.5V.
- Monotonic over the entire temperature range.
- Low-power serial interface with Schmitt-triggered inputs up to 50MHz.
- On-chip output buffer amplifier with rail-to-rail operation.
- 20mA sink/source capability at the VREFIN/VREFOUT pin.
- Power-down feature reducing current consumption to typically 0.18µA at 5V.
Applications
- Portable instrumentation.
- Closed-loop servo-control/process control.
- Data acquisition systems.
- Programmable attenuation, digital gain, and offset adjustment.
- Programmable voltage and current sources.
- Battery-operated equipment due to low power consumption and small footprint.
Q & A
- What is the resolution of the DAC8568IAPW?
The DAC8568IAPW has a resolution of 16 bits.
- What is the internal reference voltage of the DAC8568IAPW?
The internal reference voltage is 2.5V, which is disabled by default.
- What is the temperature drift of the internal reference?
The internal reference has a temperature drift of 2 ppm/°C (typ) and 5 ppm/°C (max).
- What is the power supply range for the DAC8568IAPW?
The power supply range is +2.7V to +5.5V.
- What is the operating temperature range of the DAC8568IAPW?
The operating temperature range is –40°C to +125°C.
- What type of package does the DAC8568IAPW come in?
The DAC8568IAPW comes in a TSSOP-16 package.
- What is the maximum clock rate of the serial interface?
The serial interface can operate at clock rates up to 50MHz.
- How much power does the DAC8568IAPW consume at 5V?
The device consumes typically 1.25mA at 5V, including the internal reference current.
- What is the power-down current consumption of the DAC8568IAPW?
In power-down mode, the current consumption is typically 0.18µA at 5V.
- Is the DAC8568IAPW monotonic over its entire temperature range?
Yes, the DAC8568IAPW is monotonic over its entire temperature range.
