The DAC8814 is a quad, 16-bit, current-output digital-to-analog converter (DAC) designed to operate from a single +2.7-V to 5.0-V supply.
The applied external reference input voltage VREF determines the full-scale output current. An internal feedback resistor (RFB) provides temperature tracking for the full-scale output when combined with an external I-to-V precision amplifier.
A doubled buffered serial data interface offers high-speed, 3-wire, SPI and microcontroller compatible inputs using serial data in (SDI), clock (CLK), and a chip-select (CS). In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple packages are used. A common level-sensitive load DAC strobe (LDAC) input allows simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to zero at system turn on. An MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0, or to half-scale code when MSB = 1.
The DAC8814 is available in an SSOP package.
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| Resolution (Bits) | 16 |
| Number of DAC channels | 4 |
| Interface type | SPI |
| Output type | Unbuffered Current |
| Settling time (µs) | 0.5 |
| Features | SDO |
| Reference type | Ext |
| Architecture | Multiplying DAC |
| Rating | Catalog |
| Output range (max) (mA/V) | 2 |
| Output range (min) (mA/V) | 0 |
| Sample/update rate (Msps) | 2 |
| Power consumption (typ) (mW) | 0.0275 |
| Operating temperature range (°C) | -40 to 85 |
| SSOP (DB) | 28 | 79.56 mm² 10.2 x 7.8 |