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TI(德州仪器) DAC7821
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  • TI(德州仪器) DAC7821
  • TI(德州仪器) DAC7821
  • TI(德州仪器) DAC7821
  • TI(德州仪器) DAC7821
  • TI(德州仪器) DAC7821
  • TI(德州仪器) DAC7821
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DAC7821

DAC7821

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12 位串行输入乘法 DAC

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  • 封装 | 引脚 | 尺寸

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.

  • 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

All trademarks are the property of their respective owners.

Resolution (Bits)12
Number of DAC channels1
Interface typeParallel
Output typeUnbuffered Current
Settling time (µs)0.2
Reference typeExt
ArchitectureMultiplying DAC
RatingCatalog
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
TSSOP (PW)2041.6 mm² 6.5 x 6.4
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