Overview
The DAC7568ICPW is a 12-bit, octal-channel, voltage-output digital-to-analog converter (DAC) produced by Texas Instruments. This device is part of the DAC7568, DAC8168, and DAC8568 family, known for their low power consumption, high accuracy, and versatile serial interface. The DAC7568ICPW is ideal for applications requiring multiple analog output channels with high precision and low glitch energy.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Number of Channels | 8 | |
| Relative Accuracy (INL) | ±0.3 LSB | |
| Glitch Energy | 0.1 nV-s | |
| Internal Reference Voltage | 2.5V (disabled by default) | V |
| Internal Reference Accuracy | 0.004% (typ) | % |
| Internal Reference Temperature Drift | 2 ppm/°C (typ), 5 ppm/°C (max) | ppm/°C |
| Power Supply Range | +2.7V to +5.5V | V |
| Power Consumption (normal mode, internal reference on) | 1.25 mA at 5V | mA |
| Power Consumption (power-down mode) | < 1 μW | μW |
| Serial Interface Clock Rate | Up to 50 MHz | MHz |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Type | TSSOP-14 |
Key Features
- Ultralow glitch energy of 0.1 nV-s, ensuring minimal code-to-code transient voltages.
- Internal 2.5V reference with high accuracy (0.004% typ) and low temperature drift (2 ppm/°C typ).
- Low power operation with a typical current consumption of 1.25 mA at 5V, including the internal reference.
- Wide power supply range from +2.7V to +5.5V.
- Monotonic over the entire temperature range, ensuring 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 0.18 μA at 5V.
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 DAC7568ICPW?
The DAC7568ICPW has a resolution of 12 bits.
- How many analog output channels does the DAC7568ICPW have?
The DAC7568ICPW has 8 analog output channels.
- What is the typical power consumption of the DAC7568ICPW?
The typical power consumption is 1.25 mA at 5V, including the internal reference.
- What is the operating temperature range of the DAC7568ICPW?
The operating temperature range is from –40°C to +125°C.
- What is the maximum clock rate of the serial interface?
The serial interface can operate at clock rates up to 50 MHz.
- Does the DAC7568ICPW have an internal reference voltage?
Yes, it has an internal 2.5V reference voltage with high accuracy and low temperature drift.
- What is the glitch energy of the DAC7568ICPW?
The glitch energy is 0.1 nV-s.
- What is the power-down current consumption of the DAC7568ICPW?
The power-down current consumption is typically less than 1 μW.
- Is the DAC7568ICPW monotonic over its entire temperature range?
Yes, it is monotonic over the entire temperature range.
- What types of interfaces are compatible with the DAC7568ICPW's serial interface?
The serial interface is compatible with SPI, QSPI, Microwire, and DSP interfaces.
