The DAC7811 is a CMOS, 12-bit, current output digital-to-analog converter (DAC). This device operates from a 2.7V to 5.5V power supply, making it suitable for battery-powered and many other applications.

This DAC uses a double-buffered 3-wire serial interface that is compatible with SPI™, QSPI™, MICROWIRE™, and most DSP interface standards. In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple devices are used. Data readback allows the user to read the contents of the DAC register via the SDO pin. On power-up, the internal shift register and latches are filled with zeroes and the DAC outputs are at zero scale.

The DAC7811 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 DAC7811 is available in a 10-lead MSOP package.

• 2.7V to 5.5V Supply Operation
• 50MHz SerialInterface
• 10MHz Multiplying Bandwidth
• ±15V Reference Input
• Low Glitch Energy: 5nV-s
• Extended Temperature Range:-40°C to +125°C
• 10-Lead MSOP Package
• 12-Bit Monotonic
• 4-Quadrant Multiplication
• Power-On Reset with Brownout Detection
• Daisy-Chain Mode
• 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

SPI, QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor. All other trademarks are the property of their respective owners.