SLES230A September   2008  – August 2015 PCM2912A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and 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 Typical Characteristics
      1. 7.6.1 ADC Digital Decimation Filter Frequency Response
      2. 7.6.2 ADC Digital High-Pass Filter Frequency Response
      3. 7.6.3 ADC Analog Antialiasing Filter Frequency Response
      4. 7.6.4 DAC Digital Interpolation Filter Frequency Response
      5. 7.6.5 DAC Analog FIR Filter Frequency Response
      6. 7.6.6 DAC Analog Low-Pass Filter Frequency Response
      7. 7.6.7 ADC
      8. 7.6.8 DAC
      9. 7.6.9 Supply Current
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Clock and Reset
      2. 9.3.2  DAC
      3. 9.3.3  ADC
      4. 9.3.4  Microphone Bias
      5. 9.3.5  Microphone Amplifier
      6. 9.3.6  Input PGA
      7. 9.3.7  Sidetone Programmable Attenuator
      8. 9.3.8  Output Programmable Attenuator
      9. 9.3.9  VCOM1 and VCCM2
      10. 9.3.10 Filter Pins
      11. 9.3.11 Interface Sequence
        1. 9.3.11.1 Power-On, Attach, and Play Back Sequence
        2. 9.3.11.2 Play, Stop, and Detach Sequence
        3. 9.3.11.3 Record Sequence
        4. 9.3.11.4 Suspend and Resume Sequence
    4. 9.4 Device Functional Modes
    5. 9.5 Programming
      1. 9.5.1 USB Interface
        1. 9.5.1.1 Device Configuration
        2. 9.5.1.2 Interface #0
        3. 9.5.1.3 Interface #1
        4. 9.5.1.4 Interface #2
        5. 9.5.1.5 Endpoints
        6. 9.5.1.6 Internal Regulator
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

12 Layout

12.1 Layout Guidelines

The decoupling capacitors must be as close as possible to the PCM2912A pins. TI recommends following the output filter for the headphone amplifier used in the PCM2912A EVM. The analog input needs a series capacitor to eliminate any possible offset level. The PCM2912A is a low-power device, thus there is no need for a special heat sink PCB design.

12.2 Layout Example

PCM2912A Layout_Example.gif