SBASA69D August   2023  – June 2025 OPT4003-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 Response
        1. 6.3.1.1 Channel 0: Human Eye Matching
        2. 6.3.1.2 Channel 1: Near Infrared
      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
        3. 6.3.3.3 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 (USON, SOT-5X3 Variant)
        3. 8.2.1.3 Application Curves
    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 (USON Variant)
      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

6.4.7 Light Resolution

The effective resolution of the OPT4003-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 USON Variant
CONVERSION_TIME REGISTER CONVERSION TIME MANTISSA EFFECTIVE BITS EXPONENT
0 1 2 3 4 5 6 7 8
FULL-SCALE LUX
561 1122 2244 4488 8976 17952 35903 71806 143613
Effective Resolution in Lux
0 600µs 9 1.096 2.191 4.38 8.77 17.53 35.06 70.12 140.25 280.49
1 1ms 10 547.84m 1.096 2.191 4.38 8.77 17.53 35.06 70.12 140.25
2 1.8ms 11 273.92m 547.84m 1.096 2.191 4.38 8.77 17.53 35.06 70.12
3 3.4ms 12 136.96m 273.92m 547.84m 1.096 2.191 4.38 8.77 17.53 35.06
4 6.5ms 13 68.48m 136.96m 273.92m 547.84m 1.096 2.191 4.38 8.77 17.53
5 12.7ms 14 34.24m 68.48m 136.96m 273.92m 547.84m 1.096 2.191 4.38 8.77
6 25ms 15 17.12m 34.24m 68.48m 136.96m 273.92m 547.84m 1.096 2.191 4.38
7 50ms 16 8.56m 17.12m 34.24m 68.48m 136.96m 273.92m 547.84m 1.096 2.191
8 100ms 17 4.28m 8.56m 17.12m 34.24m 68.48m 136.96m 273.92m 547.84m 1.096
9 200ms 18 2.14m 4.28m 8.56m 17.12m 34.24m 68.48m 136.96m 273.92m 547.84m
10 400ms 19 1.07m 2.14m 4.28m 8.56m 17.12m 34.24m 68.48m 136.96m 273.92m
11 800ms 20 0.535m 1.07m 2.14m 4.28m 8.56m 17.12m 34.24m 68.48m 136.96m
Table 6-6 Channel 1 Resolution Table for the USON Variant

CONVERSION_TIME REGISTER

CONVERSION TIME

MANTISSA EFFECTIVE BITS

EXPONENT

0

1

2

3

4

5

6

FULL-SCALE IRRADIANCE (µW/cm2)
429 858 1715 3431 6862 13724 27447
Effective Resolution (nW/cm2)
0 600µs 9 837.63 1675.26 3350.53 6701.06 13402.11 26804.22 53608.45
1 1ms 10 418.82 837.63 1675.26 3350.53 6701.06 13402.11 26804.22
2 1.8ms 11 209.41 418.82 837.63 1675.26 3350.53 6701.06 13402.11
3 3.4ms 12 104.7 209.41 418.82 837.63 1675.26 3350.53 6701.06
4 6.5ms 13 52.35 104.7 209.41 418.82 837.63 1675.26 3350.53
5 12.7ms 14 26.18 52.35 104.7 209.41 418.82 837.63 1675.26
6 25ms 15 13.09 26.18 52.35 104.7 209.41 418.82 837.63
7 50ms 16 6.54 13.09 26.18 52.35 104.7 209.41 418.82
8 100ms 17 3.27 6.54 13.09 26.18 52.35 104.7 209.41
9 200ms 18 1.64 3.27 6.54 13.09 26.18 52.35 104.7
10 400ms 19 0.818 1.64 3.27 6.54 13.09 26.18 52.35
11 800ms 20 0.409 0.818 1.64 3.27 6.54 13.09 26.18