SLASF08A December   2021  – May 2024 DAC43508 , DAC53508 , DAC63508

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configurations and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics
    6. 5.6  Timing Requirements: SPI
    7. 5.7  Timing Requirements: Logic
    8. 5.8  Timing Diagrams
    9. 5.9  Typical Characteristics: Static Performance
    10. 5.10 Typical Characteristics: Dynamic Performance
    11. 5.11 Typical Characteristics: General
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Digital-to-Analog Converter (DAC) Architecture
        1. 6.3.1.1 DAC Transfer Function
        2. 6.3.1.2 DAC Register Update and LDAC Functionality
        3. 6.3.1.3 CLR Functionality
        4. 6.3.1.4 Output Amplifier
      2. 6.3.2 Reference
      3. 6.3.3 Power-On Reset (POR)
      4. 6.3.4 Software Reset
    4. 6.4 Device Functional Modes
      1. 6.4.1 Power-Down Mode
    5. 6.5 Programming
      1. 6.5.1 Serial Peripheral Interface (SPI)
  8. 7 Register Map
    1. 7.1 DEVICE_CONFIG Register (address = 01h) [reset = 00FFh]
    2. 7.2 STATUS_TRIGGER Register (address = 02h) [reset = 0000h]
    3. 7.3 BRDCAST Register (address = 03h) [reset = 0000h]
    4. 7.4 DACn_DATA Register (address = 08h to 0Fh) [reset = 0000h]
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Programmable LED Biasing
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Programmable Window Comparator
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

6.3.1.1 DAC Transfer Function

The device writes the input data to the individual DAC Data registers in straight binary format. After a power-on or a reset event, the device sets all DAC registers to zero-code. Equation 1 shows DAC transfer function.

Equation 1. V O U T X = D A C n _ D A T A 2 N × V R E F I N

where:

  • N = resolution in bits: 8 (DAC43508), 10 (DAC53508), or 12 (DAC63508)
  • DACn_DATA is the decimal equivalent of the binary code that is loaded to the DAC register
  • DACn_DATA ranges from 0 to 2N – 1
  • VREFIN is the DAC reference voltage