SBAS451B October   2008  – August  2015 PCM1789

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: Digital Input/Output
    6. 6.6  Electrical Characteristics: DAC
    7. 6.7  Electrical Characteristics: Power-Supply Requirements
    8. 6.8  System Clock Timing Requirements
    9. 6.9  Audio Interface Timing Requirements
    10. 6.10 Three-Wire Timing Requirements
    11. 6.11 SCL and SDA Timing Requirements
    12. 6.12 Typical Characteristics
      1. 6.12.1 Digital Filter
      2. 6.12.2 Digital De-Emphasis Filter
      3. 6.12.3 Dynamic Performance
      4. 6.12.4 Output Spectrum
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Analog Outputs
      2. 7.3.2  Voltage Reference VCOM
      3. 7.3.3  System Clock Input
      4. 7.3.4  Reset Operation
      5. 7.3.5  ZERO Flag
      6. 7.3.6  AMUTE Control
      7. 7.3.7  Three-Wire (SPI) Serial Control
      8. 7.3.8  Control Data Word Format
      9. 7.3.9  Register Write Operation
      10. 7.3.10 Timing Requirements
      11. 7.3.11 Two-wire (I2C) Serial Control
      12. 7.3.12 Packet Protocol
      13. 7.3.13 Write Operation
      14. 7.3.14 Read Operation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Sampling Mode
      2. 7.4.2 Audio Serial Port Operation
      3. 7.4.3 Audio Data Interface Formats and Timing
      4. 7.4.4 Audio Interface Timing
      5. 7.4.5 Synchronization with the Digital Audio System
      6. 7.4.6 MODE Control
      7. 7.4.7 Parallel Hardware Control
    5. 7.5 Register Maps
      1. 7.5.1 Control Register Definitions (Software Mode Only)
      2. 7.5.2 Register Definitions
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Connection Diagrams
      2. 8.1.2 Power Supply and Grounding
      3. 8.1.3 Low-Pass Filter and Differential-to-Single-Ended Converter For DAC Outputs
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Hardware Control Method
        2. 8.2.2.2 Audio Input
        3. 8.2.2.3 Audio Output
        4. 8.2.2.4 Master Clock
    3. 8.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

10 Layout

10.1 Layout Guidelines

A typical printed circuit board (PCB) layout for the PCM1789 is shown in Figure 41. A ground plane is recommended, with the analog and digital sections being isolated from one another using a split or cut in the circuit board. The PCM1789 should be oriented with the digital I/O pins facing the ground plane split/cut to allow for short, direct connections to the digital audio interface and control signals originating from the digital section of the board.

Separate power supplies are recommended for the digital and analog sections of the board. This configuration prevents the switching noise present on the digital supply from contaminating the analog power supply and degrading the dynamic performance of the PCM1789.

10.2 Layout Example

PCM1789 ai_pcb_layout_bas451.gifFigure 41. Recommended PCB Layout