ZHCSRX3 april   2023 DAC63202W

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: Voltage Output
    6. 6.6  Electrical Characteristics: Current Output
    7. 6.7  Electrical Characteristics: Comparator Mode
    8. 6.8  Electrical Characteristics: General
    9. 6.9  Timing Requirements: I2C Standard Mode
    10. 6.10 Timing Requirements: I2C Fast Mode
    11. 6.11 Timing Requirements: I2C Fast Mode Plus
    12. 6.12 Timing Requirements: SPI Write Operation
    13. 6.13 Timing Requirements: SPI Read and Daisy Chain Operation (FSDO = 0)
    14. 6.14 Timing Requirements: SPI Read and Daisy Chain Operation (FSDO = 1)
    15. 6.15 Timing Requirements: GPIO
    16. 6.16 Timing Diagrams
    17. 6.17 Typical Characteristics: Voltage Output
    18. 6.18 Typical Characteristics: Current Output
    19. 6.19 Typical Characteristics: Comparator
    20. 6.20 Typical Characteristics: General
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Smart Digital-to-Analog Converter (DAC) Architecture
      2. 7.3.2 Digital Input/Output
      3. 7.3.3 Nonvolatile Memory (NVM)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Voltage-Output Mode
        1. 7.4.1.1 Voltage Reference and DAC Transfer Function
          1. 7.4.1.1.1 Internal Reference
          2. 7.4.1.1.2 External Reference
          3. 7.4.1.1.3 Power-Supply as Reference
      2. 7.4.2 Current-Output Mode
      3. 7.4.3 Comparator Mode
        1. 7.4.3.1 Programmable Hysteresis Comparator
        2. 7.4.3.2 Programmable Window Comparator
      4. 7.4.4 Fault-Dump Mode
      5. 7.4.5 Application-Specific Modes
        1. 7.4.5.1 Voltage Margining and Scaling
          1. 7.4.5.1.1 High-Impedance Output and PROTECT Input
          2. 7.4.5.1.2 Programmable Slew-Rate Control
          3. 7.4.5.1.3 PMBus Compatibility Mode
        2. 7.4.5.2 Function Generation
          1. 7.4.5.2.1 Triangular Waveform Generation
          2. 7.4.5.2.2 Sawtooth Waveform Generation
          3. 7.4.5.2.3 Sine Waveform Generation
      6. 7.4.6 Device Reset and Fault Management
        1. 7.4.6.1 Power-On Reset (POR)
        2. 7.4.6.2 External Reset
        3. 7.4.6.3 Register-Map Lock
        4. 7.4.6.4 NVM Cyclic Redundancy Check (CRC)
          1. 7.4.6.4.1 NVM-CRC-FAIL-USER Bit
          2. 7.4.6.4.2 NVM-CRC-FAIL-INT Bit
      7. 7.4.7 Power-Down Mode
    5. 7.5 Programming
      1. 7.5.1 SPI Programming Mode
      2. 7.5.2 I2C Programming Mode
        1. 7.5.2.1 F/S Mode Protocol
        2. 7.5.2.2 I2C Update Sequence
          1. 7.5.2.2.1 Address Byte
          2. 7.5.2.2.2 Command Byte
        3. 7.5.2.3 I2C Read Sequence
      3. 7.5.3 General-Purpose Input/Output (GPIO) Modes
    6. 7.6 Register Map
      1. 7.6.1  NOP Register (address = 00h) [reset = 0000h]
      2. 7.6.2  DAC-X-MARGIN-HIGH Register (address = 13h, 01h) [reset = 0000h]
      3. 7.6.3  DAC-X-MARGIN-LOW Register (address = 14h, 02h) [reset = 0000h]
      4. 7.6.4  DAC-X-VOUT-CMP-CONFIG Register (address = 15h, 03h) [reset = 0000h]
      5. 7.6.5  DAC-X-IOUT-MISC-CONFIG Register (address = 16h, 04h) [reset = 0000h]
      6. 7.6.6  DAC-X-CMP-MODE-CONFIG Register (address = 17h, 05h) [reset = 0000h]
      7. 7.6.7  DAC-X-FUNC-CONFIG Register (address = 18h, 06h) [reset = 0000h]
      8. 7.6.8  DAC-X-DATA Register (address = 1Ch, 19h) [reset = 0000h]
      9. 7.6.9  COMMON-CONFIG Register (address = 1Fh) [reset = 0FFFh]
      10. 7.6.10 COMMON-TRIGGER Register (address = 20h) [reset = 0000h]
      11. 7.6.11 COMMON-DAC-TRIG Register (address = 21h) [reset = 0000h]
      12. 7.6.12 GENERAL-STATUS Register (address = 22h) [reset = 00h, DEVICE-ID, VERSION-ID]
      13. 7.6.13 CMP-STATUS Register (address = 23h) [reset = 0000h]
      14. 7.6.14 GPIO-CONFIG Register (address = 24h) [reset = 0000h]
      15. 7.6.15 DEVICE-MODE-CONFIG Register (address = 25h) [reset = 0000h]
      16. 7.6.16 INTERFACE-CONFIG Register (address = 26h) [reset = 0000h]
      17. 7.6.17 SRAM-CONFIG Register (address = 2Bh) [reset = 0000h]
      18. 7.6.18 SRAM-DATA Register (address = 2Ch) [reset = 0000h]
      19. 7.6.19 BRDCAST-DATA Register (address = 50h) [reset = 0000h]
      20. 7.6.20 PMBUS-PAGE Register [reset = 0300h]
      21. 7.6.21 PMBUS-OP-CMD-X Register [reset = 0000h]
      22. 7.6.22 PMBUS-CML Register [reset = 0000h]
      23. 7.6.23 PMBUS-VERSION Register [reset = 2200h]
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 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 静电放电警告
    6. 9.6 术语表
  10. 10Mechanical, Packaging, and Orderable Information

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7.4.5.2.3 Sine Waveform Generation

The sine wave function uses 24 preprogrammed points per cycle. The frequency of the sine wave depends on the SLEW-RATE settings as shown in Equation 8:

Equation 8. f S I N E _ W A V E = 1 24 × S L E W _ R A T E

where SLEW_RATE is the SLEW-RATE-X setting as specified in Table 7-6.

An external RC load with a time constant larger than the slew-rate settings can be dominant over the internal frequency calculation. The SLEW-RATE-X setting is available in the DAC-X-FUNC-CONFIG register. Writing 0b100 to the FUNC-CONFIG-X bit field in the DAC-X-FUNC-CONFIG register selects sine wave. The codes for the sine wave are fixed. Use the gain settings at the output amplifier for changing the full-scale output using the internal reference option. The gain settings are accessible through the VOUT-GAIN-X bits in the DAC-X-VOUT-CMP-CONFIG register. Table 7-10 shows the list of hard-coded discrete points for the sine wave with 12-bit resolution and Figure 7-14 shows the pictorial representation of the sine wave. There are four phase settings available for the sine wave that are selected using the PHASE-SEL-X bit in the DAC-X-FUNC-CONFIG register.

Table 7-10 Sine Wave Data Points
SEQUENCE 12-BIT VALUE SEQUENCE 12-BIT VALUE
0 (0° phase start) 0x800 12 0x800
1 0x9A8 13 0x658
2 0xB33 14 0x4CD
3 0xC87 15 0x379
4 0xD8B 16 (240° phase start) 0x275
5 0xE2F 17 0x1D1
6 (90° phase start) 0xE66 18 0x19A
7 0xE2F 19 0x1D1
8 (120° phase start) 0xD8B 20 0x275
9 0xC87 21 0x379
10 0xB33 22 0x4CD
11 0x9A8 23 0x658
GUID-20211130-SS0I-L0KP-WTVF-QBK03L6TNM12-low.svg Figure 7-14 Sine Wave Generation
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