ZHCSQ74A September   2022  – November 2022 DAC82001

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  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
    7. 6.7 Timing Diagram
    8. 6.8 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 (DAC) Architecture
        1. 7.3.1.1 DAC Transfer Function
        2. 7.3.1.2 DAC Register Structure
      2. 7.3.2 Power-On Reset (POR)
      3. 7.3.3 Hardware Reset
      4. 7.3.4 Software Reset
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 Serial Peripheral Interface (SPI)
        1. 7.5.1.1 SYNC Interrupt
    6. 7.6 Register Maps
      1. 7.6.1 Registers
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Arbitrary Waveform Generator
        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 Bipolar Analog Output Configuration
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 术语表
  10. 10Mechanical, Packaging, and Orderable Information

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7.5.1 Serial Peripheral Interface (SPI)

The DAC82001 is controlled through a 3-wire serial peripheral interface (SPI) using SYNC, SCLK, and SDIN. The serial interface operates at up to 50 MHz. The input shift register is 24-bits wide.

Table 7-1 shows the SPI frame format.

Table 7-1 SPI Frame Format
BIT 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DESC WRegister Address - Command Byte16-Bit MSB-Aligned DAC Data

Serial clock SCLK is a continuous or a gated clock. The first falling edge of SYNC starts the operation cycle. When SYNC is high, the SCLK and SDIN signals are blocked. The device internal registers are updated from the shift register on the rising edge of SYNC.