SBAS422B July   2007  – January 2018 DAC8881

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Block Diagram
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Characteristics for
    7. 6.7 Timing Characteristics for and
    8. 6.8 Typical Characteristics: VDD = +5 V
    9. 6.9 TYpical Characteristics: VDD = +2.7 V
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Analog Output
      2. 7.3.2  Reference Inputs
      3. 7.3.3  Output Range
      4. 7.3.4  Input Data Format
      5. 7.3.5  Hardware Reset
      6. 7.3.6  Power-On Reset
      7. 7.3.7  Program Reset Value
      8. 7.3.8  Power Down
      9. 7.3.9  Double-Buffered Interface
      10. 7.3.10 Load DAC Pin (LDAC)
        1. 7.3.10.1 Synchronous Mode
        2. 7.3.10.2 Asynchronous Mode
      11. 7.3.11 1.8 V to 5.5 V Logic Interface
    4. 7.4 Device Functional Modes
      1. 7.4.1 Serial Interface
        1. 7.4.1.1 Input Shift Register
          1. 7.4.1.1.1 Stand-Alone Mode
          2. 7.4.1.1.2 Daisy-Chain Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Bipolar Operation Using The DAC8881
    2. 8.2 Typical Application
      1. 8.2.1 DAC8881 Sample Hold Circuit
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 System Example
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.3 Output Range

The maximum output range of the DAC8881 is VREFL to VREFH × G, where G is the output buffer gain set by the GAIN pin. When the GAIN pin is connected to DGND, the output buffer gain = 1. When the GAIN pin is connected to IOVDD, the output buffer gain = 2. The output range must not be greater than AVDD; otherwise, output saturation occurs. The DAC8881 output transfer function is given in Equation 1:

Equation 1. DAC8881 q_vout_bas422.gif

Where:

CODE = 0 to 65535. This is the digital code loaded to the DAC.

Buffer Gain = 1 or 2 (set by the GAIN pin).

VREFH = reference high voltage applied to the device.

VREFL = reference low voltage applied to the device.