SBAS740B October   2015  – May 2020 ADS1118-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      K-Type Thermocouple Measurement Using Integrated Temperature Sensor for Cold-Junction Compensation
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin 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: Serial Interface
    7. 7.7 Switching Characteristics: Serial Interface
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Noise Performance
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Multiplexer
      2. 9.3.2 Analog Inputs
      3. 9.3.3 Full-Scale Range (FSR) and LSB Size
      4. 9.3.4 Voltage Reference
      5. 9.3.5 Oscillator
      6. 9.3.6 Temperature Sensor
        1. 9.3.6.1 Converting from Temperature to Digital Codes
        2. 9.3.6.2 Converting from Digital Codes to Temperature
    4. 9.4 Device Functional Modes
      1. 9.4.1 Reset and Power-Up
      2. 9.4.2 Operating Modes
        1. 9.4.2.1 Single-Shot Mode and Power-Down
        2. 9.4.2.2 Continuous-Conversion Mode
      3. 9.4.3 Duty Cycling for Low Power
    5. 9.5 Programming
      1. 9.5.1 Serial Interface
      2. 9.5.2 Chip Select (CS)
      3. 9.5.3 Serial Clock (SCLK)
      4. 9.5.4 Data Input (DIN)
      5. 9.5.5 Data Output and Data Ready (DOUT/DRDY)
      6. 9.5.6 Data Format
      7. 9.5.7 Data Retrieval
        1. 9.5.7.1 32-Bit Data Transmission Cycle
        2. 9.5.7.2 16-Bit Data Transmission Cycle
    6. 9.6 Register Maps
      1. 9.6.1 Conversion Register [reset = 0000h]
        1. Table 6. Conversion Register Field Descriptions
      2. 9.6.2 Config Register [reset = 058Bh]
        1. Table 7. Config Register Field Descriptions
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Serial Interface Connections
      2. 10.1.2 GPIO Ports for Communication
      3. 10.1.3 Analog Input Filtering
      4. 10.1.4 Single-Ended Inputs
      5. 10.1.5 Connecting Multiple Devices
      6. 10.1.6 Pseudo Code Example
    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
    1. 11.1 Power-Supply Sequencing
    2. 11.2 Power-Supply Decoupling
  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 Receiving Notification of Documentation Updates
    3. 13.3 Support Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

7.8 Typical Characteristics

at TA = 25°C, VDD = 3.3 V, and FSR = ±2.048 V (unless otherwise noted)
ADS1118-Q1 tc_terr-sig_bas457.gif
DR = 860 SPS, diff Inputs; includes noise, offset, and gain errors
Figure 2. Total Error vs Input Signal
ADS1118-Q1 tc_inl-vs_bas457.gif
Figure 4. INL vs Supply Voltage
ADS1118-Q1 tc_inl-in_sig_fs512_3V_bas457.gif
FSR = ±0.512 V, DR = 8 SPS, VDD = 3.3 V, best fit
Figure 6. INL vs Input Signal
ADS1118-Q1 tc_inl-in_sig_fs512_5V_bas457.gif
FSR = ±0.512 V, DR = 8 SPS, VDD = 5 V, best fit
Figure 8. INL vs Input Signal
ADS1118-Q1 tc_inl-dr_bas457.gif
FSR = ±2.048 V, best fit
Figure 10. INL vs Data Rate
ADS1118-Q1 tc_oerr_1end-vs_bas457.gif
Figure 12. Single-Ended Offset Voltage vs Supply
ADS1118-Q1 tc_diff_oset-vs_bas457.gif
Figure 14. Differential Offset Voltage vs Supply
ADS1118-Q1 tc_offset_histo_bas457.gif
FSR = ±2.048 V,
540 units from 3 production lots
Figure 16. Offset Histogram
ADS1118-Q1 tc_gerr-vs_bas457.gif
Figure 18. Gain Error vs Supply
ADS1118-Q1 tc_ts_error-tmp_bas457.png
Figure 20. Temperature Sensor Error vs Temperature
ADS1118-Q1 D006_SBAS740.gif
TA = 0°C, 48 units from 3 production lots
Figure 22. Temperature Sensor Error Histogram
ADS1118-Q1 D008_SBAS740.gif
TA = 70°C, 48 units from 3 production lots
Figure 24. Temperature Sensor Error Histogram
ADS1118-Q1 tc_ivdd-tmp_bas457.gif
Figure 26. Operating Current vs Temperature
ADS1118-Q1 tc_fresp_bas457.gif
DR = 8 SPS
Figure 28. Digital Filter Frequency Response
ADS1118-Q1 tc_drate-tmp_bas457.png
Figure 3. Data Rate vs Temperature
ADS1118-Q1 tc_inl-in_sig_fs2048_3V_bas457.gif
FSR = ±2.048 V, DR = 8 SPS, VDD = 3.3 V, best fit
Figure 5. INL vs Input Signal
ADS1118-Q1 tc_inl-in_sig_fs2048_5V_bas457.gif
FSR = ±2.048 V, DR = 8 SPS, VDD = 5 V, best fit
Figure 7. INL vs Input Signal
ADS1118-Q1 tc_inl_vs_temp_bas457.gif
FSR = ±2.048 V, DR = 8 SPS, best fit
Figure 9. INL vs Temperature
ADS1118-Q1 tc_oerr_1end-tmp_bas457.gif
Figure 11. Single-Ended Offset Voltage vs Temperature
ADS1118-Q1 tc_diff_oset-tmp_bas457.gif
Figure 13. Differential Offset Voltage vs Temperature
ADS1118-Q1 tc_offset_drift_histogram_bas457.gif
FSR = ±2.048 V, TA = –40°C to +125°C, mux = AIN0 to AIN3,
540 units from 3 production lots
Figure 15. Offset Drift Histogram
ADS1118-Q1 tc_gerr-tmp_bas457.gif
Figure 17. Gain Error vs Temperature
ADS1118-Q1 tc_gerr_histo_bas457.gif
FSR = ±2.048 V, 540 units from 3 production lots
Figure 19. Gain Error Histogram
ADS1118-Q1 D005_SBAS740.gif
TA = –40°C, 48 units from 3 production lots
Figure 21. Temperature Sensor Error Histogram
ADS1118-Q1 D007_SBAS740.gif
TA = 25°C, 48 units from 3 production lots
Figure 23. Temperature Sensor Error Histogram
ADS1118-Q1 D009_SBAS740.gif
TA = 125°C, 48 units from 3 production lots
Figure 25. Temperature Sensor Error Histogram
ADS1118-Q1 tc_iq-tmp_bas457.png
Figure 27. Power-Down Current vs Temperature