Overview
The DAC8168IAPWR is a 14-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 known for their low power consumption, internal reference, and small footprint. The DAC8168 is particularly suited for applications requiring high precision and minimal code-to-code transient voltages (glitch). It operates over a wide power-supply range of +2.7V to +5.5V and is available in a TSSOP-14 package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14-bit | |
| Number of Channels | 8 | |
| Internal Reference Voltage | 2.5V | V |
| Internal Reference Accuracy | 0.004% (typ) | % |
| Internal Reference Temperature Drift | 2ppm/°C (typ), 5ppm/°C (max) | ppm/°C |
| Glitch Energy | 0.1nV-s | nV-s |
| Power Supply Range | +2.7V to +5.5V | V |
| Operating Temperature Range | –40°C to +125°C | °C |
| Power Consumption (Normal Mode) | 1.25mA at 5V (including internal reference) | mA |
| Power Consumption (Power-Down Mode) | < 1μW | W |
| Serial Interface Clock Rate | Up to 50MHz | MHz |
Key Features
- Ultra-low glitch energy of 0.1nV-s, ensuring minimal code-to-code transient voltages.
- Internal 2.5V reference with 0.004% initial accuracy and 2ppm/°C temperature drift.
- Monotonic over the entire temperature range, providing excellent linearity.
- Low-power serial interface with Schmitt-triggered inputs, compatible with SPI, QSPI, Microwire, and DSP interfaces.
- On-chip output buffer amplifier with rail-to-rail operation.
- Power-on reset to zero scale or midscale.
- Power-down feature reducing current consumption to typically 0.18μA at 5V.
- Wide power-supply range: +2.7V to +5.5V.
- 20mA sink/source capability at the VREFIN/VREFOUT pin.
Applications
- Portable instrumentation.
- Closed-loop servo-control and 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 DAC8168?
The DAC8168 has a resolution of 14 bits.
- How many channels does the DAC8168 have?
The DAC8168 has 8 channels.
- What is the internal reference voltage of the DAC8168?
The internal reference voltage is 2.5V.
- What is the typical internal reference accuracy of the DAC8168?
The typical internal reference accuracy is 0.004%.
- What is the glitch energy of the DAC8168?
The glitch energy is 0.1nV-s.
- What is the operating temperature range of the DAC8168?
The operating temperature range is –40°C to +125°C.
- What is the power consumption of the DAC8168 in normal mode?
The power consumption is typically 1.25mA at 5V, including the internal reference.
- How does the power-down feature of the DAC8168 work?
The power-down feature reduces current consumption to typically 0.18μA at 5V.
- What is the maximum clock rate of the serial interface of the DAC8168?
The serial interface can operate at clock rates up to 50MHz.
- What types of interfaces is the DAC8168 compatible with?
The DAC8168 is compatible with SPI, QSPI, Microwire, and DSP interfaces.
