| Resolution (Bits) | 12 |
| Number of DAC channels (#) | 1 |
| 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 |
| Operating temperature range (C) | -40 to 125 |
- 2.5V to 5.5V Supply Operation
- Fast Parallel Interface: 17ns Write Cycle
- Update Rate of 20.4MSPS
- 10MHz Multiplying Bandwidth
- ±10V Reference Input
- Low Glitch Energy: 5nV-s
- Extended Temperature Range:-40°C to +125°C
- 20-Lead TSSOP Packages
- 12-Bit Monotonic
- ±1LSB INL
- 4-Quadrant Multiplication
- Power-On Reset with Brownout Detection
- Readback Function
- Industry-Standard Pin Configuration
- APPLICATIONS
- Portable Battery-Powered Instruments
- Waveform Generators
- Analog Processing
- Programmable Amplifiers and Attenuators
- Digitally-Controlled Calibration
- Programmable Filters and Oscillators
- Composite Video
- Ultrasound
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The DAC7821 is a CMOS 12-bit current output digital-to-analog converter (DAC). This device operates from a single 2.5V to 5.5V power supply, making it suitable for battery-powered and many other applications.
This DAC 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 DAC7821 offers excellent 4-quadrant multiplication characteristics, with a 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 DAC7821 is available in a 20-lead TSSOP package.