SLAS452E October   2020  – January 2021 DAC5652

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 Rationgs
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Resistance Characteristics
    5. 6.5  Electrical Characteristics
    6. 6.6  Electrical Characteristics
    7. 6.7  Electrical Characteristics, AC
    8. 6.8  Electrical Characteristics, DC
    9. 6.9  Switching Characteristics
    10. 6.10 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Digital Inputs and Timing
      1. 7.1.1 Digital Inputs
      2. 7.1.2 Input Interfaces
      3. 7.1.3 Dual-Bus Data Interface and Timing
      4. 7.1.4 Single-Bus Interleaved Data Interface and Timing
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 DAC Transfer Function
      2. 8.3.2 Analog Outputs
      3. 8.3.3 Output Configurations
      4. 8.3.4 Differential With Transformer
      5. 8.3.5 Single-Ended Configuration
      6. 8.3.6 Reference Operation
        1. 8.3.6.1 Internal Reference
        2. 8.3.6.2 External Reference
      7. 8.3.7 Gain Setting Option
    4. 8.4 Device Functional Modes
      1. 8.4.1 Sleep Mode
  9. 9 Application Information Disclaimer
    1. 9.1 Application Informmation
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Performance Plots
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

8.3.1 DAC Transfer Function

Each of the DACs in the DAC5652 has a set of complementary current outputs, IOUT1 and IOUT2. The full-scale output current, IOUTFS, is the summation of the two complementary output currents:

Equation 1. GUID-F6742B5A-FA0A-417A-AA14-89E40192BE15-low.gif

The individual output currents depend on the DAC code and can be expressed as:

Equation 2. GUID-D8AB2FE2-6ACD-4311-B4B0-4DD080DF89C5-low.gif
Equation 3. GUID-DC053107-0352-48AD-AE72-A1DC8ACFDAEE-low.gif

where Code is the decimal representation of the DAC data input word. Additionally, IOUTFS is a function of the reference current IREF, which is determined by the reference voltage and the external setting resistor (RSET).

Equation 4. GUID-B73315FF-0D90-45E6-9223-BC5BF86EE65E-low.gif

In most cases, the complementary outputs drive resistive loads or a terminated transformer. A signal voltage develops at each output according to:

Equation 5. GUID-1C5307CF-B91C-4BF0-AF00-47A233E68555-low.gif
Equation 6. GUID-D25C2EB2-A7C3-4E45-A6F8-014A16153112-low.gif

The value of the load resistance is limited by the output compliance specification of the DAC5652. To maintain specified linearity performance, the voltage for IOUT1 and IOUT2 must not exceed the maximum allowable compliance range.

The total differential output voltage is:

Equation 7. GUID-44E6BFFE-7A9C-4B8C-8727-D3E92B6CCD47-low.gif
Equation 8. GUID-5CB53CF7-9116-412E-974E-73C88F24B658-low.gif