The DAC7568, DAC8168, and DAC8568 are low-power, voltage-output, eight-channel, 12-, 14-, and 16-bit digital-to-analog converters (DACs), respectively. These devices include a 2.5V, 2ppm/°C internal reference (disabled by default), giving a full-scale output voltage range of 2.5V or 5V. The internal reference has an initial accuracy of 0.004% and can source up to 20mA at the VREFIN/VREFOUT pin. These devices are monotonic, providing excellent linearity and minimizing undesired code-to-code transient voltages (glitch). They use a versatile 3-wire serial interface that operates at clock rates up to 50MHz. The interface is compatible with standard SPI, QSPI, Microwire, and digital signal processor (DSP) interfaces.
DAC7568 特性
Relative Accuracy:
DAC7568 (12-Bit): 0.3 LSB INL
DAC8168 (14-Bit): 1 LSB INL
DAC8568 (16-Bit): 4 LSB INL
Glitch Energy: 0.1nV-s
Internal Reference:
2.5V Reference Voltage (disabled by default)
0.004% Initial Accuracy (typ)
2ppm/°C Temperature Drift (typ)
5ppm/°C Temperature Drift (max)
20mA Sink/Source Capability
Power-On Reset to Zero Scale or Midscale
Ultra-Low 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
