SBOSA93E May   2023  – June 2025 OPT4001-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Timing Diagram
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Spectral Matching to Human Eye
      2. 6.3.2 Automatic Full-Scale Range Setting
      3. 6.3.3 Error Correction Code (ECC) Features
        1. 6.3.3.1 Output Sample Counter
        2. 6.3.3.2 Output CRC
      4. 6.3.4 Output Register FIFO
      5. 6.3.5 Threshold Detection
    4. 6.4 Device Functional Modes
      1. 6.4.1 Modes of Operation
      2. 6.4.2 Interrupt Modes of Operation
      3. 6.4.3 Light Range Selection
      4. 6.4.4 Selecting Conversion Time
      5. 6.4.5 Light Measurement in Lux
      6. 6.4.6 Threshold Detection Calculations
      7. 6.4.7 Light Resolution
    5. 6.5 Programming
      1. 6.5.1 I2C Bus Overview
        1. 6.5.1.1 Serial Bus Address
        2. 6.5.1.2 Serial Interface
      2. 6.5.2 Writing and Reading
        1. 6.5.2.1 High-Speed I2C Mode
        2. 6.5.2.2 Burst Read Mode
        3. 6.5.2.3 General-Call Reset Command
        4. 6.5.2.4 SMBus Alert Response
  8. 7 Register Maps
    1. 7.1 Register Descriptions
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Electrical Interface
        1. 8.2.1.1 Design Requirements
          1. 8.2.1.1.1 Optical Interface
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Optomechanical Design (PicoStar Variant)
        3. 8.2.1.3 Application Curves (PicoStar Variant)
        4. 8.2.1.4 Application Curves (Other Variants)
    3. 8.3 Best Design Practices
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
        1. 8.5.1.1 Soldering and Handling Recommendations (PicoStar Variant)
          1. 8.5.1.1.1 Solder Paste
          2. 8.5.1.1.2 Package Placement
          3. 8.5.1.1.3 Reflow Profile
          4. 8.5.1.1.4 Special Flexible Printed-Circuit Board (FPCB) Recommendations
          5. 8.5.1.1.5 Rework Process
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.4.7 Light Resolution

The effective resolution of the OPT4001-Q1 is dependent on both the conversion time setting and the full-scale light range. Although the LSB resolution of the linear ADC_CODES does not change, the effective or useful resolution of the device is dependent on the conversion time setting and the full-scale range. In conversion times where the effective resolution is lower, the LSBs are padded with 0.

Table 6-5 Resolution Table for the PicoStar™ Variant
CONVERSION_TIME REGISTER CONVERSION TIME MANTISSA EFFECTIVE BITS EXPONENT
0 1 2 3 4 5 6 7 8
FULL-SCALE LUX (Effective Resolution in Lux)
328 655 1310 2621 5243 10486 20972 41943 83886
0 600µs 9 640m 1.28 2.56 5.12 10.24 20.48 40.96 81.82 163.84
1 1ms 10 320m 640m 1.28 2.56 5.12 10.24 20.48 40.96 81.82
2 1.8ms 11 160m 320m 640m 1.28 2.56 5.12 10.24 20.48 40.96
3 3.4ms 12 80m 160m 320m 640m 1.28 2.56 5.12 10.24 20.48
4 6.5ms 13 40m 80m 160m 320m 640m 1.28 2.56 5.12 10.24
5 12.7ms 14 20m 40m 80m 160m 320m 640m 1.28 2.56 5.12
6 25ms 15 10m 20m 40m 80m 160m 320m 640m 1.28 2.56
7 50ms 16 5m 10m 20m 40m 80m 160m 320m 640m 1.28
8 100ms 17 2.5m 5m 10m 20m 40m 80m 160m 320m 640m
9 200ms 18 1.25m 2.5m 5m 10m 20m 40m 80m 160m 320m
10 400ms 19 0.625m 1.25m 2.5m 5m 10m 20m 40m 80m 160m
11 800ms 20 0.3125m 0.625m 1.25m 2.5m 5m 10m 20m 40m 80m
Table 6-6 Resolution Table for the USON Variant
CONVERSION_TIME REGISTER CONVERSION TIME MANTISSA EFFECTIVE BITS EXPONENT
0 1 2 3 4 5 6 7 8
FULL-SCALE LUX (Effective Resolution in Lux)
419 839 1678 3355 6711 13422 26844 53687 107374
0 600µs 9 819.2m 1.64 3.28 6.55 13.11 26.21 52.43 104.86 209.72
1 1ms 10 409.6m 819.2m 1.64 3.28 6.55 13.11 26.21 52.43 104.86
2 1.8ms 11 204.8m 409.6m 819.2m 1.64 3.28 6.55 13.11 26.21 52.43
3 3.4ms 12 102.4m 204.8m 409.6m 819.2m 1.64 3.28 6.55 13.11 26.21
4 6.5ms 13 51.2m 102.4m 204.8m 409.6m 819.2m 1.64 3.28 6.55 13.11
5 12.7ms 14 25.6m 51.2m 102.4m 204.8m 409.6m 819.2m 1.64 3.28 6.55
6 25ms 15 12.8m 25.6m 51.2m 102.4m 204.8m 409.6m 819.2m 1.64 3.28
7 50ms 16 6.4m 12.8m 25.6m 51.2m 102.4m 204.8m 409.6m 819.2m 1.64
8 100ms 17 3.2m 6.4m 12.8m 25.6m 51.2m 102.4m 204.8m 409.6m 819.2m
9 200ms 18 1.6m 3.2m 6.4m 12.8m 25.6m 51.2m 102.4m 204.8m 409.6m
10 400ms 19 0.8m 1.6m 3.2m 6.4m 12.8m 25.6m 51.2m 102.4m 204.8m
11 800ms 20 0.4m 0.8m 1.6m 3.2m 6.4m 12.8m 25.6m 51.2m 102.4m