SLAS476H March   2006  – June 2017 DAC8550

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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
    7. 6.7 Typical Characteristics
      1. 6.7.1 VDD = 5 V
      2. 6.7.2 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 DAC Section
        1. 7.3.1.1 Resistor String
        2. 7.3.1.2 Output Amplifier
      2. 7.3.2 Power-On Reset
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-Down Modes
    5. 7.5 Programming
      1. 7.5.1 Serial Interface
      2. 7.5.2 Input Shift Register
      3. 7.5.3 SYNC Interrupt
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Bipolar Operation Using DAC8550
    2. 8.2 Typical Applications
      1. 8.2.1 Loop-Powered 2-Wire 4-mA to 20-mA Transmitter With XTR116
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Using REF02 as a Power Supply for DAC8550
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
    3. 8.3 System Examples
      1. 8.3.1 Microprocessor Interfacing
        1. 8.3.1.1 DAC8550 to 8051 Interface
        2. 8.3.1.2 DAC8550 to Microwire Interface
        3. 8.3.1.3 DAC8550 to 68HC11 Interface
  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
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

9 Power Supply Recommendations

The DAC8550 can operate within the specified supply voltage range of 2.7 V to 5.5 V. The power applied to VDD should be well-regulated and low-noise. Switching power supplies and dc/dc converters often have high-frequency glitches or spikes riding on the output voltage. In addition, digital components can create similar high-frequency spikes. This noise can easily couple into the DAC output voltage through various paths between the power connections and analog output. In order to further minimize noise from the power supply, a strong recommendation is to include a 1-μF to 10-μF capacitor and 0.1-μF bypass capacitor. The current consumption on the VDD pin, the short-circuit current limit, and the load current for the device is listed in the Electrical Characteristics. The power supply must meet the aforementioned current requirements.