DAC7821IPWR

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 (V_REF) determines the full - scale output current. An integrated feedback resistor (R_FB) 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.

Applications

• Portable Battery - Powered Instruments
• Waveform Generators
• Analog Processing Programmable Amplifiers and Attenuators
• Digitally - Controlled Calibration
• Programmable Filters and Oscillators
• Composite Video
• Ultrasound

Key features

• 2.5V to 5.5V Supply Operation
• Fast Parallel Interface: 17ns Write Cycle
• Update Rate of 20.4MSPS
• 10MHz Multiplying Bandwidth
• ±10u 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