Document Outline

• 1. Pin Descriptions
• 2. Characteristics and Specifications
  • Specified Operating Conditions
  • Absolute Maximum Ratings
  • ADC Analog Characteristics
  • ADC Analog Characteristics
  • ADC Digital Filter Characteristics
  • PGAOUT Analog Characteristics
  • PGAOUT Analog Characteristics
  • PGAOUT Analog Characteristics
  • DC Electrical Characteristics
  • Digital Interface Characteristics
  • Switching Characteristics - Serial Audio Port
    • Figure 1. Master Mode Serial Audio Port Timing
    • Figure 2. Slave Mode Serial Audio Port Timing
    • Figure 3. Format 0, Left-Justified up to 24-Bit Data
    • Figure 4. Format 1, I·S up to 24-Bit Data
  • Switching Characteristics - Control Port - I·C Format
    • Figure 5. Control Port Timing - I·C Format
  • Switching Characteristics - Control Port - SPI Format
    • Figure 6. Control Port Timing - SPI Format
• 3. Typical Connection Diagram
  • Figure 7. Typical Connection Diagram
• 4. Applications
  • 4.1 Recommended Power-Up Sequence
  • 4.2 System Clocking
    • Table 1. Speed Modes
    • 4.2.1 Master Clock
      • Table 2. Common Clock Frequencies
      • Table 3. MCLK Dividers
    • 4.2.2 Master Mode
      • Figure 8. Master Mode Clocking
    • 4.2.3 Slave Mode
      • Table 4. Slave Mode Serial Bit Clock Ratios
  • 4.3 High-Pass Filter and DC Offset Calibration
  • 4.4 Analog Input Multiplexer, PGA, and Mic Gain
    • Figure 9. Analog Input Architecture
  • 4.5 Input Connections
  • 4.6 PGA Auxiliary Analog Output
  • 4.7 Control Port Description and Timing
    • 4.7.1 SPI Mode
      • Figure 10. Control Port Timing in SPI Mode
    • 4.7.2 I·C Mode
      • Figure 11. Control Port Timing, I·C Write
      • Figure 12. Control Port Timing, I·C Read
  • 4.8 Interrupts and Overflow
  • 4.9 Reset
  • 4.10 Synchronization of Multiple Devices
  • 4.11 Grounding and Power Supply Decoupling
• 5. Register Quick Reference
• 6. Register Description
  • 6.1 Chip ID - Register 01h
    • Table 5. Device Revision
  • 6.2 Power Control - Address 02h
    • 6.2.1 Freeze (Bit 7)
      • Table 6. Freeze-able Bits
    • 6.2.2 Power-Down MIC (Bit 3)
    • 6.2.3 Power-Down ADC (Bit 2)
    • 6.2.4 Power-Down Device (Bit 0)
  • 6.3 ADC Control - Address 04h
    • 6.3.1 Functional Mode (Bits 7:6)
      • Table 7. Functional Mode Selection
    • 6.3.2 Digital Interface Format (Bit 4)
      • Table 8. Digital Interface Formats
    • 6.3.3 Mute (Bit 2)
    • 6.3.4 High-Pass Filter Freeze (Bit 1)
    • 6.3.5 Master / Slave Mode (Bit 0)
  • 6.4 MCLK Frequency - Address 05h
    • 6.4.1 Master Clock Dividers (Bits 6:4)
      • Table 9. MCLK Frequency
  • 6.5 PGAOut Control - Address 06h
    • 6.5.1 PGAOut Source Select (Bit 6)
      • Table 10. PGAOut Source Selection
  • 6.6 Channel B PGA Control - Address 07h
    • 6.6.1 Channel B PGA Gain (Bits 5:0)
  • 6.7 Channel A PGA Control - Address 08h
    • 6.7.1 Channel A PGA Gain (Bits 5:0)
      • Table 11. Example Gain and Attenuation Settings
  • 6.8 ADC Input Control - Address 09h
    • 6.8.1 PGA Soft Ramp or Zero Cross Enable (Bits 4:3)
      • Table 12. PGA Soft Cross or Zero Cross Mode Selection
    • 6.8.2 Analog Input Selection (Bits 2:0)
      • Table 13. Analog Input Multiplexer Selection
  • 6.9 Active Level Control - Address 0Ch
    • 6.9.1 Active High/Low (Bit 0)
  • 6.10 Interrupt Status - Address 0Dh
    • 6.10.1 Clock Error (Bit 3)
    • 6.10.2 Overflow (Bit 1)
    • 6.10.3 Underflow (Bit 0)
  • 6.11 Interrupt Mask - Address 0Eh
  • 6.12 Interrupt Mode MSB - Address 0Fh
  • 6.13 Interrupt Mode LSB - Address 10h
• 7. Parameter Definitions
• 8. Filter Plots
  • Figure 13. Single-Speed Stopband Rejection
  • Figure 14. Single-Speed Stopband Rejection
  • Figure 15. Single-Speed Transition Band (Detail)
  • Figure 16. Single-Speed Passband Ripple
  • Figure 17. Double-Speed Stopband Rejection
  • Figure 18. Double-Speed Stopband Rejection
  • Figure 19. Double-Speed Transition Band (Detail)
  • Figure 20. Double-Speed Passband Ripple
  • Figure 21. Quad-Speed Stopband Rejection
  • Figure 22. Quad-Speed Stopband Rejection
  • Figure 23. Quad-Speed Transition Band (Detail)
  • Figure 24. Quad-Speed Passband Ripple
• 9. Package Dimensions
• 10. Thermal Characteristics and Specifications
• 11. Ordering Information
• 12. Revision History