SBAS689D June   2015  – December 2016 AFE4404

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 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 TIA and Switched RC Filter
        1. 8.3.1.1 Operation with Two and Three LEDs
          1. 8.3.1.1.1 LED Current Setting
        2. 8.3.1.2 TIA Gain Settings
        3. 8.3.1.3 TIA Bandwidth Settings
      2. 8.3.2 Power Management
        1. 8.3.2.1 Transmitter Supply (TX_SUP)
        2. 8.3.2.2 Receiver Supply (RX_SUP)
        3. 8.3.2.3 I/O Supply (IO_SUP)
        4. 8.3.2.4 Boost Converters Selection
      3. 8.3.3 Offset Cancellation DAC
        1. 8.3.3.1 Offset Cancellation DAC Controls
      4. 8.3.4 Analog-to-Digital Converter (ADC)
      5. 8.3.5 I2C Interface
      6. 8.3.6 Timing Engine
        1. 8.3.6.1 Timer and PRF Controls
        2. 8.3.6.2 Timing Control Registers
        3. 8.3.6.3 Receiver Timing
        4. 8.3.6.4 Dynamic Power-Down Timing
        5. 8.3.6.5 Sample Register Values
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power Modes
      2. 8.4.2 RESET Modes
      3. 8.4.3 Clocking Modes
      4. 8.4.4 PRF Programmability
      5. 8.4.5 Averaging Modes
      6. 8.4.6 Decimation Mode
        1. 8.4.6.1 Decimation Mode Power and Performance
    5. 8.5 Register Map
      1. 8.5.1  Register 0h (address = 0h) [reset = 0h]
      2. 8.5.2  Register 1h (address = 1h) [reset = 0h]
      3. 8.5.3  Register 2h (address = 2h) [reset = 0h]
      4. 8.5.4  Register 3h (address = 3h) [reset = 0h]
      5. 8.5.5  Register 4h (address = 4h) [reset = 0h]
      6. 8.5.6  Register 5h (address = 5h) [reset = 0h]
      7. 8.5.7  Register 6h (address = 6h) [reset = 0h]
      8. 8.5.8  Register 7h (address = 7h) [reset = 0h]
      9. 8.5.9  Register 8h (address = 8h) [reset = 0h]
      10. 8.5.10 Register 9h (address = 9h) [reset = 0h]
      11. 8.5.11 Register Ah (address = Ah) [reset = 0h]
      12. 8.5.12 Register Bh (address = Bh) [reset = 0h]
      13. 8.5.13 Register Ch (address = Ch) [reset = 0h]
      14. 8.5.14 Register Dh (address = Dh) [reset = 0h]
      15. 8.5.15 Register Eh (address = Eh) [reset = 0h]
      16. 8.5.16 Register Fh (address = Fh) [reset = 0h]
      17. 8.5.17 Register 10h (address = 10h) [reset = 0h]
      18. 8.5.18 Register 11h (address = 11h) [reset = 0h]
      19. 8.5.19 Register 12h (address = 12h) [reset = 0h]
      20. 8.5.20 Register 13h (address = 13h) [reset = 0h]
      21. 8.5.21 Register 14h (address = 14h) [reset = 0h]
      22. 8.5.22 Register 15h (address = 15h) [reset = 0h]
      23. 8.5.23 Register 16h (address = 16h) [reset = 0h]
      24. 8.5.24 Register 17h (address = 17h) [reset = 0h]
      25. 8.5.25 Register 18h (address = 18h) [reset = 0h]
      26. 8.5.26 Register 19h (address = 19h) [reset = 0h]
      27. 8.5.27 Register 1Ah (address = 1Ah) [reset = 0h]
      28. 8.5.28 Register 1Bh (address = 1Bh) [reset = 0h]
      29. 8.5.29 Register 1Ch (address = 1Ch) [reset = 0h]
      30. 8.5.30 Register 1Dh (address = 1Dh) [reset = 0h]
      31. 8.5.31 Register 1Eh (address = 1Eh) [reset = 0h]
      32. 8.5.32 Register 20h (address = 20h) [reset = 0h]
      33. 8.5.33 Register 21h (address = 21h) [reset = 0h]
      34. 8.5.34 Register 22h (address = 22h) [reset = 0h]
      35. 8.5.35 Register 23h (address = 23h) [reset = 0h]
      36. 8.5.36 Register 29h (address = 29h) [reset = 0h]
      37. 8.5.37 Register 2Ah (address = 2Ah) [reset = 0h]
      38. 8.5.38 Register 2Bh (address = 2Bh) [reset = 0h]
      39. 8.5.39 Register 2Ch (address = 2Ch) [reset = 0h]
      40. 8.5.40 Register 2Dh (address = 2Dh) [reset = 0h]
      41. 8.5.41 Register 2Eh (address = 2Eh) [reset = 0h]
      42. 8.5.42 Register 2Fh (address = 2Fh) [reset = 0h]
      43. 8.5.43 Register 31h (address = 31h) [reset = 0h]
      44. 8.5.44 Register 32h (address = 32h) [reset = 0h]
      45. 8.5.45 Register 33h (address = 33h) [reset = 0h]
      46. 8.5.46 Register 34h (address = 34h) [reset = 0h]
      47. 8.5.47 Register 35h (address = 35h) [reset = 0h]
      48. 8.5.48 Register 36h (address = 36h) [reset = 0h]
      49. 8.5.49 Register 37h (address = 37h) [reset = 0h]
      50. 8.5.50 Register 39h (address = 39h) [reset = 0h]
      51. 8.5.51 Register 3Ah (address = 3Ah) [reset = 0h]
      52. 8.5.52 Register 3Dh (address = 3Dh) [reset = 0h]
      53. 8.5.53 Register 3Fh (address = 3Fh) [reset = 0h]
      54. 8.5.54 Register 40h (address = 40h) [reset = 0h]
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 System-Level ESD Considerations
        2. 9.2.2.2 Reducing Sensitivity to Ambient Light Modulation
      3. 9.2.3 Application Curves
        1. 9.2.3.1 Choosing the Right AFE Settings
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • YZP|15
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Device Comparison Table

PRODUCT PACKAGE-LEAD LED DRIVE CONFIGURATION LED DRIVE CURRENT
(mA, Max)		 OPERATING TEMPERATURE RANGE OPTIMIZED APPLICATION
AFE4400 VQFN-40 H-bridge,
common anode		 50 0°C to 70°C Finger-clip pulse oximeters
AFE4490 VQFN-40 H-bridge,
common anode		 200 –40°C to 85°C Clinical-grade pulse oximeters
AFE4403 DSBGA-36 H-bridge,
common anode		 100 –20°C to 70°C Clinical pulse oximeter patches, wearables
AFE4404 DSBGA-15 Common anode 50(1) –20°C to 70°C Wearable optical bio-sensing
(1) Mode that doubles the range to 100 mA with additional restrictions.