SLASF03 December   2021 DAC11001B

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 Requirements: Write, 4.5 V ≤ DVDD ≤ 5.5 V
    7. 6.7  Timing Requirements: Write, 2.7 V ≤ DVDD < 4.5 V
    8. 6.8  Timing Requirements: Read and Daisy-Chain Write, 4.5 V ≤ DVDD ≤ 5.5 V
    9. 6.9  Timing Requirements: Read and Daisy-Chain Write, 2.7 V ≤ DVDD < 4.5 V
    10. 6.10 Timing Diagrams
    11. 6.11 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Digital-to-Analog Converter Architecture
      2. 7.3.2 External Reference
      3. 7.3.3 Output Buffers
      4. 7.3.4 Internal Power-On Reset (POR)
      5. 7.3.5 Temperature Drift and Calibration
      6. 7.3.6 DAC Output Deglitch Circuit
    4. 7.4 Device Functional Modes
      1. 7.4.1 Fast-Settling Mode and THD
      2. 7.4.2 DAC Update Rate Mode
    5. 7.5 Programming
      1. 7.5.1 Daisy-Chain Operation
      2. 7.5.2 CLR Pin Functionality and Software Clear
      3. 7.5.3 Output Update (Synchronous and Asynchronous)
        1. 7.5.3.1 Synchronous Update
        2. 7.5.3.2 Asynchronous Update
      4. 7.5.4 Software Reset Mode
    6. 7.6 Register Map
      1. 7.6.1 NOP Register (address = 00h) [reset = 0x000000h for bits [23:0]]
      2. 7.6.2 DAC-DATA Register (address = 01h) [reset = 0x000000h for bits [23:0]]
      3. 7.6.3 CONFIG1 Register (address = 02h) [reset = 004C80h for bits [23:0]]
      4. 7.6.4 DAC-CLEAR-DATA Register (address = 03h) [reset = 000000h for bits [23:0]]
      5. 7.6.5 TRIGGER Register (address = 04h) [reset = 000000h for bits [23:0]]
      6. 7.6.6 STATUS Register (address = 05h) [reset = 000000h for bits [23:0]]
      7. 7.6.7 CONFIG2 Register (address = 06h) [reset = 000040h for bits [23:0]]
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Source Measure Unit (SMU)
        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 High-Precision Control Loop
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Arbitrary Waveform Generation (AWG)
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 Interfacing to a Processor
      2. 8.3.2 Interfacing to a Low-Jitter LDAC Source
      3. 8.3.3 Embedded Resistor Configurations
        1. 8.3.3.1 Minimizing Bias Current Mismatch
        2. 8.3.3.2 2x Gain Configuration
        3. 8.3.3.3 Generating Negative Reference
    4. 8.4 What to Do and What Not to Do
      1. 8.4.1 What to Do
      2. 8.4.2 What Not to Do
    5. 8.5 Initialization Set Up
  9. 9 Power Supply Recommendations
    1. 9.1 Power-Supply Sequencing
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 PCB Assembly Effects on Precision
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.5 Programming

The DAC11001B is controlled through a flexible, four-wire serial interface that is compatible with serial interfaces used on many microcontrollers and DSP controllers. The interface provides read and write access to all registers of the DAC11001B. Additionally, the interface can be configured to daisy-chain multiple devices for write operations.

Each serial interface access cycle is exactly 32 bits long, as shown in Figure 7-3. A frame is initiated by asserting the SYNC pin low. The frame ends when the SYNC pin is deasserted high. The first bit is read/write bit B31. A write is performed when this bit is set to 0, and a read is performed when this bit is set to 1. The next seven bits are address bits B30 to B24. The next 20 bits are data. For all writes, data are clocked on the falling edge of SCLK. As Figure 7-4 shows, for read access and daisy-chain operation, the data are clocked out on the SDO terminal on the rising edge of SCLK.

GUID-03E26218-8535-4EF0-98C6-9772B42E0824-low.gif Figure 7-3 Serial Interface Write Bus Cycle: Standalone Mode
GUID-8CE58159-52EC-42C1-B82F-9D5FDEDD0C17-low.gif Figure 7-4 Serial Interface Read Bus Cycle