SBAS815A February   2017  – June 2017 ADS114S06 , ADS114S08

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Functional Block Diagram
  4. 4 Revision History
  5. 5 Device Family 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 Characteristics
    7. 7.7 Switching Characteristics
    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  Low-Noise Programmable Gain Amplifier
        1. 9.3.2.1 PGA Input-Voltage Requirements
        2. 9.3.2.2 PGA Rail Flags
        3. 9.3.2.3 Bypassing the PGA
      3. 9.3.3  Voltage Reference
        1. 9.3.3.1 Internal Reference
        2. 9.3.3.2 External Reference
        3. 9.3.3.3 Reference Buffers
      4. 9.3.4  Clock Source
      5. 9.3.5  Delta-Sigma Modulator
      6. 9.3.6  Digital Filter
        1. 9.3.6.1 Low-Latency Filter
          1. 9.3.6.1.1 Low-Latency Filter Frequency Response
          2. 9.3.6.1.2 Data Conversion Time for the Low-Latency Filter
        2. 9.3.6.2 Sinc3 Filter
          1. 9.3.6.2.1 Sinc3 Filter Frequency Response
          2. 9.3.6.2.2 Data Conversion Time for the Sinc3 Filter
        3. 9.3.6.3 Note on Conversion Time
        4. 9.3.6.4 50-Hz and 60-Hz Line Cycle Rejection
        5. 9.3.6.5 Global Chop Mode
      7. 9.3.7  Excitation Current Sources (IDACs)
      8. 9.3.8  Bias Voltage Generation
      9. 9.3.9  System Monitor
        1. 9.3.9.1 Internal Temperature Sensor
        2. 9.3.9.2 Power Supply Monitors
        3. 9.3.9.3 Burn-Out Current Sources
      10. 9.3.10 Status Register
        1. 9.3.10.1 POR Flag
        2. 9.3.10.2 RDY Flag
        3. 9.3.10.3 PGA Output Voltage Rail Monitors
        4. 9.3.10.4 Reference Monitor
      11. 9.3.11 General-Purpose Inputs and Outputs (GPIOs)
      12. 9.3.12 Low-Side Power Switch
      13. 9.3.13 Cyclic Redundancy Check (CRC)
      14. 9.3.14 Calibration
        1. 9.3.14.1 Offset Calibration
        2. 9.3.14.2 Gain Calibration
    4. 9.4 Device Functional Modes
      1. 9.4.1 Reset
        1. 9.4.1.1 Power-On Reset
        2. 9.4.1.2 RESET Pin
        3. 9.4.1.3 Reset by Command
      2. 9.4.2 Power-Down Mode
      3. 9.4.3 Standby Mode
      4. 9.4.4 Conversion Modes
        1. 9.4.4.1 Continuous Conversion Mode
        2. 9.4.4.2 Single-Shot Conversion Mode
        3. 9.4.4.3 Programmable Conversion Delay
    5. 9.5 Programming
      1. 9.5.1 Serial Interface
        1. 9.5.1.1 Chip Select (CS)
        2. 9.5.1.2 Serial Clock (SCLK)
        3. 9.5.1.3 Serial Data Input (DIN)
        4. 9.5.1.4 Serial Data Output and Data Ready (DOUT/DRDY)
        5. 9.5.1.5 Data Ready (DRDY)
        6. 9.5.1.6 Timeout
      2. 9.5.2 Data Format
      3. 9.5.3 Commands
        1. 9.5.3.1  NOP
        2. 9.5.3.2  WAKEUP
        3. 9.5.3.3  POWERDOWN
        4. 9.5.3.4  RESET
        5. 9.5.3.5  START
        6. 9.5.3.6  STOP
        7. 9.5.3.7  SYOCAL
        8. 9.5.3.8  SYGCAL
        9. 9.5.3.9  SFOCAL
        10. 9.5.3.10 RDATA
        11. 9.5.3.11 RREG
        12. 9.5.3.12 WREG
      4. 9.5.4 Reading Data
        1. 9.5.4.1 Read Data Direct
        2. 9.5.4.2 Read Data by RDATA Command
        3. 9.5.4.3 Sending Commands When Reading Data
      5. 9.5.5 Interfacing with Multiple Devices
    6. 9.6 Register Map
      1. 9.6.1 Configuration Registers
        1. 9.6.1.1  Device ID Register (address = 00h) [reset = xxh]
          1. Table 26. Device ID (ID) Register Field Descriptions
        2. 9.6.1.2  Device Status Register (address = 01h) [reset = 80h]
          1. Table 27. Device Status (STATUS) Register Field Descriptions
        3. 9.6.1.3  Input Multiplexer Register (address = 02h) [reset = 01h]
          1. Table 28. Input Multiplexer (INPMUX) Register Field Descriptions
        4. 9.6.1.4  Gain Setting Register (address = 03h) [reset = 00h]
          1. Table 29. Gain Setting (PGA) Register Field Descriptions
        5. 9.6.1.5  Data Rate Register (address = 04h) [reset = 14h]
          1. Table 30. Data Rate (DATARATE) Register Field Descriptions
        6. 9.6.1.6  Reference Control Register (address = 05h) [reset = 10h]
          1. Table 31. Reference Control (REF) Register Field Descriptions
        7. 9.6.1.7  Excitation Current Register 1 (address = 06h) [reset = 00h]
          1. Table 32. Excitation Current Register 1 (IDACMAG) Register Field Descriptions
        8. 9.6.1.8  Excitation Current Register 2 (address = 07h) [reset = FFh]
          1. Table 33. Excitation Current Register 2 (IDACMUX) Register Field Descriptions
        9. 9.6.1.9  Sensor Biasing Register (address = 08h) [reset = 00h]
          1. Table 34. Sensor Biasing (VBIAS) Register Field Descriptions
        10. 9.6.1.10 System Control Register (address = 09h) [reset = 10h]
          1. Table 35. System Control (SYS) Register Field Descriptions
        11. 9.6.1.11 Reserved Register (address = 0Ah) [reset = 00h]
          1. Table 36. Reserved Register Field Descriptions
        12. 9.6.1.12 Offset Calibration Register 1 (address = 0Bh) [reset = 00h]
          1. Table 37. Offset Calibration Register 1 (OFCAL0) Register Field Descriptions
        13. 9.6.1.13 Offset Calibration Register 2 (address = 0Ch) [reset = 00h]
          1. Table 38. Offset Calibration Register 2 (OFCAL1) Register Field Descriptions
        14. 9.6.1.14 Reserved Register (address = 0Dh) [reset = 00h]
          1. Table 39. Reserved Register Field Descriptions
        15. 9.6.1.15 Gain Calibration Register 1 (address = 0Eh) [reset = 00h]
          1. Table 40. Gain Calibration Register 1 (FSCAL0) Field Descriptions
        16. 9.6.1.16 Gain Calibration Register 2 (address = 0Fh) [reset = 40h]
          1. Table 41. Gain Calibration Register 2 (FSCAL1) Field Descriptions
        17. 9.6.1.17 GPIO Data Register (address = 10h) [reset = 00h]
          1. Table 42. GPIO Data (GPIODAT) Register Field Descriptions
        18. 9.6.1.18 GPIO Configuration Register (address = 11h) [reset = 00h]
          1. Table 43. GPIO Configuration (GPIOCON) Register Field Descriptions
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Serial Interface Connections
      2. 10.1.2 Analog Input Filtering
      3. 10.1.3 External Reference and Ratiometric Measurements
      4. 10.1.4 Establishing a Proper Input Voltage
      5. 10.1.5 Unused Inputs and Outputs
      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
        1. 10.2.2.1 Register Settings
      3. 10.2.3 Application Curves
    3. 10.3 Do's and Don'ts
  11. 11Power Supply Recommendations
    1. 11.1 Power Supplies
    2. 11.2 Power-Supply Sequencing
    3. 11.3 Power-On Reset
    4. 11.4 Power-Supply Decoupling
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Development Support
    2. 13.2 Documentation Support
      1. 13.2.1 Related Documentation
    3. 13.3 Related Links
    4. 13.4 Receiving Notification of Documentation Updates
    5. 13.5 Community Resources
    6. 13.6 Trademarks
    7. 13.7 Electrostatic Discharge Caution
    8. 13.8 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

7.8 Typical Characteristics

at TA = 25°C, AVDD = 3.3 V, AVSS = 0 V, DVDD = IOVDD = 3.3 V, using internal VREF = 2.5 V, internal 4.096-MHz oscillator, and PGA enabled (unless otherwise noted)
ADS114S06 ADS114S08 D055_sbas660.gif
PGA bypassed, DR = 20 SPS, VIN = 0 V
Figure 8. Absolute Input Current vs Absolute Input Voltage
ADS114S06 ADS114S08 D053_sbas660.gif
PGA enabled, gain = 1, DR = 20 SPS, VIN = 0 V
Figure 10. Absolute Input Current vs Absolute Input Voltage
ADS114S06 ADS114S08 D051_sbas660.gif
PGA bypassed, DR = 20 SPS, VCM = 1.65 V
Figure 12. Differential Input Current vs Differential Input Voltage
ADS114S06 ADS114S08 D049_sbas660.gif
PGA enabled, DR = 20 SPS, VCM = 1.65 V
Figure 14. Differential Input Current vs Differential Input Voltage
ADS114S06 ADS114S08 D007_sbas660.gif
PGA bypassed, gain = 1
Figure 16. INL vs Differential Input Voltage
ADS114S06 ADS114S08 D020_sbas660.gif
Figure 18. INL vs Temperature
ADS114S06 ADS114S08 D022_sbas660.gif
Figure 20. Gain Error vs Temperature
ADS114S06 ADS114S08 D001_sbas660.gif
Figure 22. Internal Reference Voltage vs AVDD
ADS114S06 ADS114S08 D018_sbas660.gif
Figure 24. Internal Oscillator Frequency Histogram
ADS114S06 ADS114S08 D043_sbas660.gif
Figure 26. IDAC Accuracy vs Compliance Voltage
ADS114S06 ADS114S08 D045_sbas660.gif
IDAC output voltage = 1.65 V
Figure 28. IDAC Accuracy vs Temperature
ADS114S06 ADS114S08 D034_sbas660.gif
Figure 30. VBIAS Voltage [(AVDD – AVSS) / 2] vs Temperature
ADS114S06 ADS114S08 D032_sbas660.gif
Figure 32. PGA Rail Detection, PGAN_RAILP, PGAP_RAILP Threshold From AVDD
ADS114S06 ADS114S08 D030_sbas660.gif
Level 0 = 300 mV
Figure 34. Reference Threshold Voltage, Level 0
ADS114S06 ADS114S08 D004_sbas660.gif
Figure 36. Temperature Sensor Voltage vs Temperature
ADS114S06 ADS114S08 D060_sbas660.gif
AVDD = 3.3 V
Figure 38. GPIO Pin Output Voltage vs Sourcing Current
ADS114S06 ADS114S08 D058_sbas660.gif
DVDD = 3.3 V
Figure 40. Digital Pin Output Voltage vs Sourcing Current
ADS114S06 ADS114S08 D024_sbas660.gif
Standby and conversion mode, external VREF
Figure 42. Analog Supply Current vs Temperature
ADS114S06 ADS114S08 D029_sbas660.gif
Power-down mode
Figure 44. Analog Supply Current vs Temperature
ADS114S06 ADS114S08 D025_sbas660.gif
Standby and conversion mode
Figure 46. Digital Supply Current vs Temperature
ADS114S06 ADS114S08 D028_sbas660.gif
Power-down mode
Figure 48. Digital Supply Current vs Temperature
ADS114S06 ADS114S08 D054_sbas660.gif
PGA bypassed, DR = 4 kSPS, VIN = 0 V
Figure 9. Absolute Input Current vs Absolute Input Voltage
ADS114S06 ADS114S08 D052_sbas660.gif
PGA enabled, gain = 1, DR = 4 kSPS, VIN = 0 V
Figure 11. Absolute Input Current vs Absolute Input Voltage
ADS114S06 ADS114S08 D050_sbas660.gif
PGA bypassed, DR = 4 kSPS, VCM = 1.65 V
Figure 13. Differential Input Current vs Differential Input Voltage
ADS114S06 ADS114S08 D048_sbas660.gif
PGA enabled, DR = 4 kSPS, VCM = 1.65 V
Figure 15. Differential Input Current vs Differential Input Voltage
ADS114S06 ADS114S08 D008_sbas660.gif
PGA enabled, gain = 1
Figure 17. INL vs Differential Input Voltage
ADS114S06 ADS114S08 D021_sbas660.gif
Figure 19. Offset Voltage vs Temperature
ADS114S06 ADS114S08 D056_sbas660.gif
28 units, TQFP package
Figure 21. Internal Reference Voltage vs Temperature
ADS114S06 ADS114S08 D062_sbas660.gif
Figure 23. Internal Reference Voltage Noise
ADS114S06 ADS114S08 D057_sbas660.gif
28 units
Figure 25. Internal Oscillator Frequency vs Temperature
ADS114S06 ADS114S08 D044_sbas660.gif
Figure 27. IDAC Accuracy vs Compliance Voltage
ADS114S06 ADS114S08 D046_sbas660.gif
Figure 29. IDAC Matching vs Temperature
ADS114S06 ADS114S08 D035_sbas660.gif
Figure 31. VBIAS Voltage [(AVDD – AVSS) / 12] vs Temperature
ADS114S06 ADS114S08 D033_sbas660.gif
Figure 33. PGA Rail Detection, PGAN_RAILN, PGAP_RAILN Threshold From AVSS
ADS114S06 ADS114S08 D031_sbas660.gif
Level 1 = 1/3 · (AVDD – AVSS)
Figure 35. Reference Threshold Voltage, Level 1
ADS114S06 ADS114S08 D005_sbas660.gif
Figure 37. Low-Side Switch RON vs Temperature
ADS114S06 ADS114S08 D061_sbas660.gif
AVDD = 3.3 V
Figure 39. GPIO Pin Output Voltage vs Sinking Current
ADS114S06 ADS114S08 D059_sbas660.gif
DVDD = 3.3 V
Figure 41. Digital Pin Output Voltage vs Sinking Current
ADS114S06 ADS114S08 D023_sbas660.gif
Conversion mode, external VREF
Figure 43. Analog Supply Current vs AVDD
ADS114S06 ADS114S08 D064_sbas660.gif
Figure 45. Internal Reference AVDD Current vs Temperature
ADS114S06 ADS114S08 D036_sbas660.gif
Conversion mode
Figure 47. Digital Supply Current vs DVDD