The DAC7822 is a dual, CMOS, 12-bit, current output digital-to-analog converter (DAC). This device operates from a 2.5V to 5.5V power supply, making it suitable for battery-powered and many other applications.
The DAC7822 operates with a fast parallel interface. Data readback allows the user to read the contents of the DAC register via the DB pins. On power-up, the internal register and latches are filled with zeroes and the DAC outputs are at zero scale.
The DAC7822 offers excellent 4-quadrant multiplication characteristics, with large signal multiplying bandwidth of 10MHz. The applied external reference input voltage (VREF) determines the full-scale output current. An integrated feedback resistor (RFB) provides temperature tracking and full-scale voltage output when combined with an external current-to-voltage precision amplifier. The DAC7822 also includes the resistors necessary for 4-quadrant multiplication and other configuration modes.
The DAC7822 is available in a 40-lead QFN package.
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| Resolution (Bits) | 12 |
| Number of DAC channels | 2 |
| Interface type | Parallel |
| Output type | Unbuffered Current |
| Settling time (µs) | 0.2 |
| Reference type | Ext |
| Architecture | Multiplying DAC |
| Rating | Catalog |
| Output range (max) (mA/V) | 1 |
| Output range (min) (mA/V) | 0 |
| Sample/update rate (Msps) | 10 |
| Power consumption (typ) (mW) | 0.0275 |
| Operating temperature range (°C) | -40 to 125 |
| WQFN (RTA) | 40 | 36 mm² 6 x 6 |
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