ZHCSKJ2A November   2019  – April 2020 DAC60502 , DAC70502 , DAC80502

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      功能方框图
  4. 4 修订历史记录
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics
    6. 7.6  Timing Requirements : SPI Mode
    7. 7.7  Timing Requirements : I2C Standard Mode
    8. 7.8  Timing Requirements : I2C Fast Mode
    9. 7.9  Timing Requirements : I2C Fast-Mode Plus
    10. 7.10 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Digital-to-Analog Converter (DAC) Architecture
        1. 8.3.1.1 DAC Transfer Function
        2. 8.3.1.2 DAC Register Structure
        3. 8.3.1.3 Output Amplifier
      2. 8.3.2 Internal Reference
        1. 8.3.2.1 Solder Heat Reflow
      3. 8.3.3 Power-On Reset (POR)
      4. 8.3.4 Software Reset
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-Down Mode
    5. 8.5 Programming
      1. 8.5.1 Serial Interface
        1. 8.5.1.1 SPI Mode
          1. 8.5.1.1.1 SYNC Interrupt
        2. 8.5.1.2 I2C Mode
          1. 8.5.1.2.1 F/S Mode Protocol
          2. 8.5.1.2.2 DACx0502 I2C Update Sequence
            1. 8.5.1.2.2.1 DACx0502 Address Byte
            2. 8.5.1.2.2.2 DACx0502 Command Byte
            3. 8.5.1.2.2.3 DACx0502 Data Byte (MSDB and LSDB)
          3. 8.5.1.2.3 DACx0502 I2C Read Sequence
    6. 8.6 Register Maps
      1. 8.6.1 Registers
        1. 8.6.1.1 NOOP Register (offset = 0h) [reset = 0000h]
          1. Table 9. NOOP Register Field Descriptions
        2. 8.6.1.2 DEVID Register (offset = 1h) [reset = 0214h for DAC80502, 1214h for DAC70502, 2214h for DAC60502]
          1. Table 10. DEVID Register Field Descriptions
        3. 8.6.1.3 SYNC Register (offset = 2h) [reset = 0300h]
          1. Table 11. SYNC Register Field Descriptions
        4. 8.6.1.4 CONFIG Register (offset = 3h) [reset = 0000h]
          1. Table 12. CONFIG Register Field Descriptions
        5. 8.6.1.5 GAIN Register (offset = 4h) [reset = 0003h]
          1. Table 13. GAIN Register Field Descriptions
        6. 8.6.1.6 TRIGGER Register (offset = 5h) [reset = 0000h]
          1. Table 14. TRIGGER Register Field Descriptions
        7. 8.6.1.7 BRDCAST Register (offset = 6h) [reset = 0000h for RSTSEL = 0, or reset = 8000h for RSTSEL = 1]
          1. Table 15. BRDCAST Register Field Descriptions
        8. 8.6.1.8 STATUS Register (offset = 7h) [reset = 0000h]
          1. Table 16. STATUS Register Field Descriptions
        9. 8.6.1.9 DAC-n Register (offset = 8h–9h) [reset = 0000h for RSTSEL = 0, or reset = 8000h for RSTSEL = 1]
          1. Table 17. DAC-A Data Register Field Descriptions (8h)
          2. Table 18. DAC-B Data Register Field Descriptions (9h)
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 SPI Connection to a Processor
      2. 9.3.2 I2C Interface Connection to a Processor
    4. 9.4 What To Do and What Not To Do
      1. 9.4.1 What To Do
      2. 9.4.2 What Not To Do
    5. 9.5 Initialization Setup
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 文档支持
      1. 12.1.1 相关文档
    2. 12.2 相关链接
    3. 12.3 接收文档更新通知
    4. 12.4 支持资源
    5. 12.5 商标
    6. 12.6 静电放电警告
    7. 12.7 Glossary
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

10 Power Supply Recommendations

The DACx0502 operate within the specified VDD supply range of 2.7 V to 5.5 V. The DACx0502 do not require specific supply sequencing. The VDD supply must 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 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. To further minimize noise from the power supply, 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 section. The power supply must meet the aforementioned current requirements.